7238 BELMONTE25 / NORDMENDE [B/W TV]

• No scanning.
• Secondary voltages are low.
• Dark screen. Stretched vertical lines.
• Trapezoid picture. (7238 tips)
• Vertical line wavering at left hand side. (with circuit diagram extract)
• PSU does not start up correctly. Standby LED flickers
• Switches off by itself. intermittently. Standby LED lit .
• Occasional memory fault when appliance is stopped by the general switch. When switched on again, appliance is deprogrammed. (picture attached)
• TV switches off when changing channel and with great variations in the beam current.
• The TV starts up. A white line appears at the top of the screen. System tension: voltage is approximately 58V, and the other voltages are low.
• At switch on the light comes on. CTV starts up then cuts out,no light, crackling noise at the level of the power supply transformer. (extract of circuit diagram attached)
• No picture. No sound. Insufficient width. Picture has a 5cm band at top of screen.
• TV only starts up very rarely, when it does start up, RL26 smokes, the deflectors heat up and smoke, distorted picture and the colours fade.
• White picture with stripes. Switches off after a short while.
• Does not find channels or finds one channel tuned incorrectly.
• Line transformer is often defective. (extract of circuit diagram attached) (7238 tips)
• Vertical lines are distorted horizontally. E/W equalisation can not be adjusted correctly.
• Vertical lines are jagged.
• Chroma fault. Intermittent coloured interference lines.
• Vertical sync bar in the middle of the screen. (extract of circuit diagram attached)
• In VHF range (channel 5-12) white flecks and grey haze in the picture.
• Excessive brightness. Flyback lines. (+ extract of circuit diagram)
• Excessive horizontal size. at top. Reduced horizontal size. at bottom.
• Horizontal bars on picture during operation. This is accompanied by an audible signal distorting the sound.
• Attempts to start, then suddenly stops.
• Signals reduced to quarter of their size and are distorted on TL19 after 3 secs from start-up. TL19 burns if left under load. (+ extract of circuit diagram)
• Fuse cuts out without apparent reason.
• Four vertical bands on top of screen.
• No direct time insertion. (part of circuit diagram displayed)
• Standby LED lights up and TV switches on, then 2 or 3 lines across screen and appliance switches to standby.
• EHT arcing noise. (NORDMENDE - 7238 information)
• No picture on upper half of the screen. Small part of picture in lower half of the screen. Just a small stripe in lower screen. Appliance switches to protection mode. (7238 tips)
• The display is incorrect.
• Switches off intermittently (often at programme switch).
• OSD fades on all the colours.
• No start-up from PSU.
• Fuse FP2 (630mA) blows.
• Primary power supply fails under load.
• Unstable frame linearity.
• Poor sound via loudspeaker, even when adjusting volume at maximum. (7238 NORDMENDE repair tip)
• Luminance streaks and flyback lines.
• No sawtooth signal on raster. Horizontal bar appears at bottom of picture.
• The lamp is weak.
• Picture has increased at the top and reduced at the bottom of screen.
• Black lines on the picture. Poor sync. (service info for NORDMENDE -7238)
• Channels run through and do not stop.
• Siren noise in the speaker.
• No light. Poor picture. Occasional horizontal tearing. If G2 is pushed in as far as it will go picture is better. Varies from 100 to 950V, 90 degree model, 114V on DP50.
• Impossible to change standard, remains in SECAM. Picture inverted in PAL.
• Horizontal collapse. (extract of circuit diagram attached)
• All the secondary voltages are low.
• No raster signal on pin 31 of IV01.
• Blows fuses immediately after switching on.
• Dead, no high voltage (7238 tip from NORDMENDE)
• When pressing the switch the standby light comes on a little then goes off. (picture attached)
• HV starts up for 3-5 secs then shuts down. (with circuit diagram extract)
• US voltage is 57V. If you unplug pin 3 from the line stage transformer the voltage returns to 113V. Line stage transformer has been changed.
• Oblique lines towards the top of the screen and there may be a demagnetization fault and the demagnetization coil is ok. The PTC has already been changed.
• Defective picture, poor colour and white dot at switch off.
• Line BU clicks. (7238 tip from NORDMENDE)
• Poor start up performance of the power supply.
• Line transformer starts up then stops.
• Hum on sound and dark screen. Goes into standby. (NORDMENDE - 7238 information)
• Power supply starts up for a few secs then collapses while pumping on standby light.
• Picture flickers with coloured OSD (eg from a VCR).
• Vertical line approx 1/3 from left of picture. Hardly visible, but annoying.
• Stops intermittently. LED remains red. TV does not start up again with the channel button. Necessary to press the standby button then the channel button. (picture attached)
• No channels.
• Appliance switches off and switches on again, changes channel and there are great variations in the beam current.
• Blackish bar after whites.
• After changing FBT which sparks, the very high tension is ok. No light on the screen even when forcing G2 44469905.
• PSU does not always start up (start up difficulties). (extract of circuit diagram attached)
• Green picture. No contrast. (with circuit diagram extract)
• TV starts up for a few seconds with a jerky noise then stops and so on.
• Line transformer starts up three times then nothing. LED stays red.
• B/W picture in PAL.
• Short line pulses on the line output collector and then dead. (with circuit diagram extract)
• At bottom of picture superimposition of a band similar to that of the sound level and to a yellow rectangle.
• Goes into safety mode. Then switches on again for 4 seconds.
• At switch on, the tube flashes on the loudspeaker and stops. Negative picture.
• Very white lines at the top of the screen.
• Intermittently stripe in lower picture part. (7238 tip from NORDMENDE)
• Black screen. via RF output. OK via SCART .
• Hiss in audio. in UHF.
• Poor E/W correction. Adjustment of the amplitude is ok. (extract of circuit diagram attached)
• Standby LED flashes up at second intervals. Only functions at a reduced mains voltage. (picture attached)
• Blue tinge in picture in SECAM, ok in PAL. Black and white picture ok.
• Moire effect picture according to sound frequencies, on some frequencies the picture is ok for a fraction of a second. Melf RP54 is not present on the CTV chassis.
• Sound ok in slow motion. A hum can be heard if you increase the power.
• White screen with flyback line or no brightness.
• Vertical foldover at top. Dark picture. (part of circuit diagram displayed) (7238 tip from NORDMENDE)
• Vertical scanning line is at bottom of screen and CTV blows.
• Adjusting the SECAM identification: chassis.
• Screen is dark. Slight noise from the line output transformer.
• Switches to standby. after start-up. (7238 tip from NORDMENDE)
• With high contrast PSU trips then starts again. Occurs randomly. (extract of circuit diagram attached)
• Arcing of line transformer and focus G2. Picture now has a large horizontal foldover from top to bottom of screen.
• White line. at top.
• After switch on, PSU fails immediately. (with circuit diagram extract)
• Channel memory loss approx every fortnight.
• At start up standby point lights up and hum. (with circuit diagram extract)
• Fuse fails.
• Goes into protective switching. (picture attached)
• 10cm frizzy lines in top part of the picture. (with circuit diagram extract)
• No start up. PSU does not oscillate.
• No function. Reset does not react.
• No function, standby point is not visible.
• Coloured tinge in picture.
• Curtain effect.
• New transformer, TV starts up and the US voltage increases to 122V instead of 140.
• Functions for 5 mins then all the channel numbers begin to run through constantly while each time the picture comes up again and RCU does not function.
• Switches to protection mode. at start-up. (7238 tip from NORDMENDE)
• Repeated failure of chopper transistor TP29 (BUH515). (extract of circuit diagram attached)
• Switches to standby (at start-up). (extract of circuit diagram attached)
• No TXT. (with circuit diagram extract)
• Coil LG08 (situated in the corner near the EHT) burns. (+ extract of circuit diagram)
• Tripping. after a few hours. (picture attached) (7238 tips)
• Scanning at bottom of screen.
• Small screen, only inner side lights up.
• Line output transformer arcing.
• Line output transistor overheats. (picture attached)
• Secondary protective circuit TV01 and TV02 disconnects intermittently. (7238 tips)
• Passes all channels without stopping. (7238 NORDMENDE repair tip)
• Power supply crackles once then dead.
• Stuck in standby. (extract of circuit diagram attached)
• Sound but no picture. White screen with flyback line.
• Mini raster scanning.
• At switch on everything seems to be starting up well, EHT is established then 3 secs after the line oscillation is interrupted. 7V is now 13V and stays there. TV is apparently in stand by. (with circuit diagram extract)
• Occasionally the TV pulsates at start up.
• Channels run through, sound whistles and there are lines if picture present. (7238 tips)
• Starts up one time out of ten then functions ok with a nominal voltage. The rest of the time it collapses. Start up and operation ok with the variac.
• Diode goes green and then switches off. CTV does not start. (extract of circuit diagram attached)
• Dark screen with short bright flashes.
• Ticking, then PSU switches off.
• Saving new basic adjustments such as brightness.
• Standby LED flashes bright and dark.
• Tuned to channels but only snow. Selector does not respond to channel input. (extract of circuit diagram attached)
• Standby light remains on at switch on. No picture, no sound, no function from RC or control panel. Slight noise from PSU as if TV trying to switch on.
• Appliance switches off if slightly shaking chassis and then starts up immediately. Occasionally drifts off tune (only snow on screen).
• TV stops and starts up again immediately. Standby light is on. (7238 tips)
• North/South correction cannot be adjusted correctly. (with circuit diagram extract)
• Picture only in top part of screen. (+ extract of circuit diagram)
• Interference bands at the bottom of the screen. (7238 tip from NORDMENDE)
• Adjusting the audio trap: chassis.
• No start up. No standby. (part of circuit diagram displayed)
• Chroma lacks green.
• Slight raster scanning in the middle of the screen.
• Trips erratically. (7238 tip from NORDMENDE)
• Two black bars in TXT.
• PSU starts for a few secs then collapses while pumping on the standby point.
• E/W correction IC (TDA4950) blown each time. (7238 tips)
• No start-up from standby with RC. (+ extract of circuit diagram)
• Power supply fuse blows at switch on. Everything seems ok.
• Dark stripes in picture by bright picture content. Volume display jumps. Beam spot at switch off.
• Horizontal output transistor fails after start-up.
• Dim picture.
• No power supply regulation.
• Switches off by itself. after a few minutes.
• No sound or picture. Standby light switches on and goes off in a regular rhythm. (picture attached)
• Humming in speaker in standby.
• Hyperband re-fitting.
• Occasionally small horizontal black line at the top of the screen and line transformer whistles slightly.
• Switches to standby. after a few seconds. (part of circuit diagram displayed)
• Occasional crackling effect on the video signal.
• Cuts out and then starts up from time to time after working for several hours. (NORDMENDE - 7238 information)
• Low supply voltages.
• Repeated failure of BU508DF in power supply.
• Vertical bars. on the left.
• Grey scale incorrect. Yellow-green picture. High voltage on the blue cathode (170V). Voltage on the red cathode, as well as on the green, is normal (135V). (7238 tip from NORDMENDE)
• Switches to standby. intermittently. (picture attached)
• No reception. OK via SCART . (7238 tips)
• Picture jitters. in TXT. (with circuit diagram extract)
• Random loss of station memory when CTV starts up.
• After operating for some time the channels begin to run through. Nothing occurs when the circuits are cooled down.
• S2000 fails.
• The power supply blows.
• Tripping sound from flyback transformer, sometimes no picture, another time it switches itself OFF.
• Does not pick up in UHF or in VHF.
• Under certain conditions (static discharge etc.) may revert to factory set up mode.
• Weak colour.
• Starts up, works for 30 secs then goes into standby. Starts up again by itself after 2 mins.
• No line output funtion. OK at switch on.
• Only a palm high picture at bottom of screen.
• TV starts up for a few secs with a jerky noise then stops and continues like this.
• Slight reduction of raster amplitude.
• Standby light lights up for 2 seconds then goes off. Appliance does not start up.
• Picture is somewhat noisy.
• Attempts to start then smoke appears.
• Switches off when changing picture and channel and then starts again. (extract of circuit diagram attached)
• No channel storing.
• Horizontal white line. at bottom.
• Fails. (picture attached) (7238 tips)
• Protective circuit starts up. Pulsates.
• Blurred picture, focus pot does not work. (7238 tips)
• Vertical line. (extract of circuit diagram attached)
• Stuck in PAL.
• White band on top of screen. Only a buzzing noise coming from loudspeaker.
• When switching off the appliance in standby and with the mains switch there is a loud crackling in the speaker. (+ extract of circuit diagram)
• No start-up (after warm-up).
• Chroma fault occurs although the tuning discriminators and the grey scale function correctly.
• Adjusting the bell filter: chassis.
• Loud noise when switching on TV via mains. Can be intermittent.
• Shuts down (intermittently). (7238 NORDMENDE repair tip)
• No picture. Audio OK .
• At switch-on, vertical centering of picture offset by 2 cm towards the top of screen.
• Vertical amplitude is too low. (NORDMENDE - 7238 information)
• Occasionally wide interference lines (similar to a defective HF-cable) appear on the screen. Picture is ok via Scart.
• TV01 blows after operating for 30 mins.
• No -1V at base of TP29.
• Instructions for repairing the PSU. (part of circuit diagram displayed)
• No start-up. Poor red LED.
• At switch on, front LED flashes irregularly or remains fixed. (part of circuit diagram displayed)
• Mono sound is OK. Stereo sound scratches .
• Fuse (1.6A) blows intermittently. (extract of circuit diagram attached)
• No picture. at bottom.
• Regulator fault. (part of circuit diagram displayed)
• Sporadically loses station memory. Analog values available, all program sites are on CH02.
• No TV picture and humming from loud-speaker.
• Programme number/AV symbol is permanently displayed.
• Power supply S2000 blows approx every 10 hours. (service info for NORDMENDE -7238)
• PSU function description.
• Picture and sound disappear after a few days or even after 5-6 hours operation. Standby stays on. Switching off and on help for a while. (7238 tips)
• Only snow. Appliance can be controlled with RC.
• Amplitude varies with the voltages.
• FP01 blows at switch on.
• Vertical lines. (extract of circuit diagram attached)
• Vertical foldover at bottom.
• Blows at switch on. (extract of circuit diagram attached)
• White stripe at the top of the screen. It is 1cm high and not as wide as the screen. No picture.
• Adjusting the NTSC(3,58MHz) colour carrier trap: chassis.
• White line. in the centre.
• Picture bright, dark or faint with flyback lines.
• Grey adjustment: picture tube board.
• Collapses at switch on. Functions normally when first switched on
• Cut off lines visible after some time.
• Switches to standby. in PB.
• Standby light switches off. (+ extract of circuit diagram)
• PSU chirps if appliance is switched on via power switch. After approx 5 secs everything is off.
• No picture, only snow. in PIP.
• Sound and picture cut out for a second then return to normal. (picture attached)
• Intermittently increases and decreases in size both width and height.
• Line frequency drifts slightly.
• With S2000 when warm, PSU cuts out, starts again, cuts out etc. (picture attached)
• White setting: picture tube board.
• High contrast.
• No reception. (with circuit diagram extract)
• CTV remains in standby. HT at 127V, 15V at 9V, 28 at 20.
• Does not switch on because the protection intervenes. Regular stand-by. (7238 tip from NORDMENDE)
• Erratic start-up. No or intermittent start-up. (+ extract of circuit diagram)
• Vertical compression and very dark picture, more on the right than on the left.
• Distorted picture (line amplitude, linearity).
• Transistor TP 29 short circuits after working for some time.
• Intermittent goes into standby when changing channel, also sound goes up and down intermittently. (part of circuit diagram displayed)
• No memory during programming.
• Blows intermittently.
• 1 flyback transformer pulse then standby. If the picture appears, one time out of five there is crackling in the transformer then standby.
• Does not stay on AV, switches sporadically back to HF programme site.
• The light comes on. Power supply starts up for 1-4secs then cuts out.
• Line transformer does not start up. (+ extract of circuit diagram)
• Distorted picture.
• Intermittently switches off. Tapping effects.
• No RC. No sound, no channel change after changing IR receiver, with or without RC. Manual controls ok.
• No startup. Alarm noise from loudspeakers. (7238 tips)
• Starts up but stops 2 secs later.
• No start up. No display. No standby LED light. (part of circuit diagram displayed)
• Goes into standby after reducing the frame to a horizontal line after a few mins.
• Dark picture. after a while.
• Comes on for a short time.
• No function either from control panel nor RC. No OSD.
• White screen with a line in diagonal. Audio OK.
• After switch on, vertical centering is shifted intermittently upwards approx. 2 cm; it goes to normal position after approx. 10 minutes.
• Line stage does not start up. (with circuit diagram extract)
• At switch on colour is delayed.
• Noise bar. after a few minutes. (service info for NORDMENDE -7238)
• No 15V.
• Picture is just at the top edge of the CRT if the vertical picture centering regulator is at the end position. The topmost lines are somewhat bent to the right.
• When switched on, line transformer attempts to start up then goes to standby. (with circuit diagram extract)
• Pumps. (7238 NORDMENDE repair tip)
• Switches to protection mode. (with circuit diagram extract)
• The picture is displaced towards the top of the screen (approx. 4cm to 10cm).
• TP29 has a short circuit and FP01 blows after a short time.
• Adjusting the UG2 screen grid voltage: chassis.
• Faint picture because CRT was defective.
• Sound has increased to maximum, after a moment, neither RC nor manual commands work.
• Intermittently blows chopper transistor. (service info for NORDMENDE -7238)
• No channel reception after changing tuner and IF.
• Thermal R349 O/C every 3 or 4 months. (part of circuit diagram displayed)
• PSU fails immediately after start-up.
• Switches to protection mode (after a while). (with circuit diagram extract)
• No red.
• Picture position shifts vertically by approx 2cm towards the top of the screen intermittently. Position returns to normal after approx 10 mins.
• Streaky luminance and flyback lines.
• After switch on power supply pulsates three times.
• Switches to standby (after a few seconds). (+ extract of circuit diagram)
• EHT collapses.
• HT oscillates and appliance stops.
• Memory loss with Canal Plus decoder.
• Remains blocked on CH15 and PR8 at start up. Occasionally CTV functions normally. (7238 NORDMENDE repair tip)
• Power supply does not go beyond 100V.
• Switches to standby (after a while). (picture attached)
• FBT is s/c twice a year. On collector TL19. 1200V instead of 1000V. CL21, CL22, CL24, CL23 replaced but fault persists. US adjusted to 143V. FBT 470034-81 CTV TA6326.
• Shuts down (at start-up). (extract of circuit diagram attached)
• White line, slightly tilted at the bottom of the screen.
• Field centering off-set by 2cm toward top of screen when first switched on. (part of circuit diagram displayed)
• Over-accentuated fizzling sounds. (NORDMENDE - 7238 information)
• Starts up when in standby, sometimes when cold. Standby display normal.
• Snow in picture.
• No horizontal synchronisation. (7238 tips)
• Switches to standby. after a few minutes. Switches on by itself. after a while. (picture attached)
• Volume of basic adjustment is too loud.
• After 5 mins a noise like rapid crackling occurs at the scanning level. Noise disappears if picture is misframed upwards. (part of circuit diagram displayed)
• TL19 (S2000 AF) is S/C after switch on. (service info for NORDMENDE -7238)
• At start up crackling in the sound and arcing on the picture for a few mins then ok.
• Noise in speaker power supply. Goes to standby, starts up again and after 3 minutes goes to standby.
• US (110V 90º - 143V 110º) goes high after a few mins and TV trips.
• Poor framing.
• Switches to standby (intermittently). (+ extract of circuit diagram)
• Vertical rainbow zones over the picture right over the width of the screen. Intermittent fault.
• Weak contrast.
• Picture starts off very bright and after few secs goes dark.
• 3cm white line at top of picture. No sound and no video, not even in scart. Green LED on.
• No voltage.
• PSU fails immediately after switch on.
• Humming on sound and the screen is dark. The appliance goes to stand-by after 2-5 minutes.
• The appliance goes to secondary safety mode. (+ extract of circuit diagram)
• No start up. Faint whistling on loudspeaker.
• Picture is slightly displaced towards bottom of screen.
• Power supply goes to standby and standby light is lit up.
• Switches to protection mode. after a few seconds.
• Shuts down. after start-up. (extract of circuit diagram attached)
• No line oscillation. (with circuit diagram extract)
• No 30V on pin 5 of tuner in PAL SECAM. (with circuit diagram extract) (7238 tips)
• Switches to protection mode. intermittently.
• Starts for one sec and goes into standby with a hum in the loudspeaker.
• Power supply pulsates after a frame fault.
• Blue tint in picture intermittently.
• Picture is narrower. When making adjustments, the picture is wavy at the sides.
• Synchronisation during PB of the VCR.
• Horizontal line on a third of the picture towards the top. (picture attached)
• RL27 burnt.
• Noise in the HP power supply. The appliance goes to stand-by and starts up again. Dark screen and after 3 minutes the appliance returns to stand-by.
• Goes into safety mode after operating for a few mins or hours. Necessary to wait 2 mins to start again with the RC. (with circuit diagram extract)
• Wavy lines. (service info for NORDMENDE -7238)
• Three white lines at the top of the picture, nothing else. (with circuit diagram extract)
• Line BU blows at once. (part of circuit diagram displayed)
• No switch on. Crackles faintly, no LED lit.
• Intermittently switches off and on when changing channels or when picture has high beam current content.
• No colour (via SCART).
• No start-up. LED blinks .
• Switches off and on again at random.
• Can not be switched on from standby via RC.
• Line BU blows when switching on CTV.
• Standby LED flickers and PSU does not start up correctly.
• Starts up in standby, perhaps when cold. Standby display ok.
• Horizontal transistor fails every few days.
• Excessive vertical size.
• Reduced horizontal deflection.
• Arcing with sparks and cracking sounds. (service info for NORDMENDE -7238)
• After a short time the US voltage increases so that the TV cuts out.
• No horizontal deflection. Protective circuit trips. Standby light flashes. (with circuit diagram extract)
• Vertical lines are distorted horizontally. E/W equalizer can not be adjusted correctly.
• S2000AF blows each time appliance is plugged in. (extract of circuit diagram attached)
• Poor start up of PSU. Occasionally starts up but sometimes does not, especially when warming up. (extract of circuit diagram attached)
• Dead. (with circuit diagram extract)
• Switches off by itself. at start-up (when cold).
• Sound distorted, especially by stereo.
• Use of the lithium battery.
• PSU pulsates. (picture attached)
• White picture and flyback line. New FBT. S2055AF replaced by S2000AF which heats up and blows after a min.
• Dead. Intermittently OK from cold.
• PSU pulsates every second and the standby light flashes.
• Bright part approx 5cm high in the bottom quarter of the screen. The rest of the screen is dark. (+ extract of circuit diagram)
• Only a horizontal line at bottom of picture.
• Picture at the bottom. No contrast.
• No line drive. (NORDMENDE - 7238 information)
• One colour missing.
• Blurred picture which occasionally becomes normal again.
• Does not start up. Ok if power supply is 110V. Normal scanning.
• Line-BU TL19 (S2000AF) fails immmediately after start-up.
• Switches to standby (after start-up). No RC functions. (+ extract of circuit diagram)
• No picture content. Picture becomes increasingly bright with flyback lines. Switches to safety mode.
• No picture, no sound, standby display dot and horizontal bars over the screen light up in display. Can only be switched on with RC.
• No colour (intermittently). (extract of circuit diagram attached)
• Pale grey screen with fine horizontal line and hum at start up of the line transformer. (part of circuit diagram displayed)
• Only spot, no OSD and no channels.
• Twinning lines at top. Vertical distorted. Becomes better after warmed up.
• Switches to protection mode. when cold.
• Switches to protection mode. after start-up.
• Excessive green.
• Line does not oscillate.
• No voltage on LP36 in secondary side.
• Picture and sound distorted. Hum in PSU.
• Occasionally loss of station memory. When warm stations run through from 1 to 39 without loss of station memory.
• After changing FBT twice, light varies when you turn focus pot; FBT ok, after a few moments light decreases at switch on, light picture with G2 set to minimum then darkens.
• Vertical collapse. (picture attached)
• The PSU runs continuously.
• BU 508A in the power supply gets too hot and goes defective after approx 5 minutes. (+ extract of circuit diagram)
• After a few mins switches to standby. After some time can be switched on again from RC. (extract of circuit diagram attached)
• No synchronisation. (with circuit diagram extract) (service info for NORDMENDE -7238)
• Does not start up. Remains in AV. When in standby, whistling from speaker. (with circuit diagram extract)
• Trips. (part of circuit diagram displayed)
• Does not change channels. (NORDMENDE - 7238 information)
• No start up. LED flashes irregularly, switches intermittently to standby.
• Occasionally horizontal tearing and horizontal stripes. Same faults via aerial and in scart.
• When set to standard adjustments the contrast value is too high.
• Cuts out intermittently. Light becoming white before turning red. No start up with RC. (extract of circuit diagram attached)
• Starts up, but after 10 minutes picture is snowy and tuner sensibility decreases.
• S2055 AF in the line blows after operating for a few hours. (extract of circuit diagram attached)
• When switched on, the standby light lights up but the power supply is tripping. (with circuit diagram extract)
• S2055 blows.
• Us is too high at 121Vpp instead of 52Vpp.
• After clicking and tripping a few times, power supply remains blocked in standby at switch on.
• Too much EHT.
• Appliance switches off, when screen changes and starts up right away.
• No contrast control.
• No start up of power supply. No standby light. No noise.
• Dark screen and the RL11 is open circuit.
• Switches to standby (after start-up). (+ extract of circuit diagram)
• Switches on, HV appears, then switches to standby.
• Picture is displaced from frame towards top part of screen (approx 4cm).
• No power supply regulation. Standby LED flashes red every single second.
• No red (intermittently).
• The tinge varies.
• OSD appears on its own. Switches from stereo to mono a number of times.
• Picture breaks up and crackles on sound.
• Snow in picture. in UHF.
• HT fails immediately after starting up. PSU switches to standby.
• Picture jumps then stabilises in black and white always on the same channel out of all the channels available.
• White horizontal line at top of screen. Rest of screen is black.
• Intermittent fault especially when cold. No vertical stability. No luminance for a few seconds then everything OK. (7238 tips)
• Vertical lines shake. In top third of the screen picture tearing is greater.
• High contrast. Strong colours.
• Vertical lines run over the top part of the screen.
• TT switches on automatically.
• Picture runs through, impossible to stabilise.
• After some time, picture cuts out then returns immediately, standby light weakens but stays on, then CTV has a frizzy picture.
• Siren noise in speaker.
• Incorrect speed of power supply. (+ extract of circuit diagram)
• Line transistor blown after a few hrs.
• Shuts down. at start-up.
• Line scan transistor is in S/C.
• The screen insertions are unsynchronised, if no aerial signal is present.
• On the CRT board TT33 is S/C for the second time in a month.
• PSU only works in standby; no switch on. (picture attached)
• PSU only works in Burst mode, the red LED does not light up. (+ extract of circuit diagram)
• Shuts down. intermittently. (with circuit diagram extract)
• Black, horizontal lines in picture. (picture attached)
• Dark screen except for a 3cm high white streak towards the top of the screen. (part of circuit diagram displayed) (7238 NORDMENDE repair tip)
• Audible start up when cold. Switches off after 1 sec. After switching on again, only standby LED is lit. No other functions. Raster is defective (picture attached)
• PSU starts up. Whistling from speakers. (7238 tips)
• No picture. Excessive brightness. Retrace lines.
• Appliance shuts down, then restarts. (with circuit diagram extract) (7238 tip from NORDMENDE)
• Varying light intensity of standby LED. No start up but intermittent low hum.
• Picture twitches intermittently in width and height, chriping or noise can be heard in SM transformer.
• PSU does not strat.
• Line at the bottom of the screen then goes into standby.
• No OSD. (extract of circuit diagram attached)
• No HF reception. Snow on picture.
• 4cm vertical scanning for a few secs.
• Vertical stage is stuck. (7238 tip from NORDMENDE)
• Adjusting the R-Y demodulator: chassis.
• Starts up at switch on with the red light lit. Impossible to go into standby via the control panel or RC. (extract of circuit diagram attached) (service info for NORDMENDE -7238)
• Blue fails - occasionally blue flyback lines visible.
• No picture. via SCART. Audio OK .
• Excessive horizontal size. (part of circuit diagram displayed)
• Poor switch off of picture tube.
• No start up of PSU. Low ticking. (picture attached)
• Stuck in standby. Red LED dim. Possibly intermittent. (picture attached)
• At switch on, control panel LED remains red and flickers faintly.
• Only noise on screen, screen menu cannot be superimposed. Appliance does not react to the RCU or to control panel commands.
• Power supply voltage: 15V: 8V; 140: 80V. The same with the line transformer disconnected.
• Low brightness. (service info for NORDMENDE -7238)
• At switch on, standby light flashes once and cuts out.
• No vertical and horizontal amplitude. Picture shifted downwards. (+ extract of circuit diagram)
• All secondary power supply voltages are doubled. (7238 tips)
• Modification of connector on TXT IKC2-VT4P.
• TL19 fails in line output stage.
• Works for 10 secs then goes into standby. TV ok after switching off then on again.
• Dark picture. after warm-up. No picture. after a while. (7238 tip from NORDMENDE)
• Picture with flyback line on one colour.
• No colour during Canal Plus.
• Only the LL' display functions in the Multistandard version.
• No start-up from standby. after warm-up. (extract of circuit diagram attached)
• Power supply pumps when cold, red light flashes.
• Faulty OSD. (7238 NORDMENDE repair tip)
• Line output stage immediately defective after switch on. (extract of circuit diagram attached)
• Goes into SAFETY mode and very slight hum in LF.
• No picture. Loss of one or more colours.
• Very dark and unstable picture at start-up but becomes normal again after quarter of an hour.
• Only a horizontal line at top of picture. (extract of circuit diagram attached)
• Poor sound quality (mono appliances). (7238 tip from NORDMENDE)
• Picture goes into PAL occasionally but the sound remains normal. Picture returns to normal after a few secs.
• Dark picture. Can only be slightly adjusted.
• TL19 (S2000AF) fails repeatedly.
• No brightness, only colours. Only one colour in TXT (mostly green). Loss of certain colours.
• Smearing in high channels.
• Horizontal line. at bottom.
• Red LED is lit. Slight hum from the speaker. (with circuit diagram extract)
• No raster deflection. No picture, only vague light in background. Looks like coloured spot at bottom of picture.
• Blows on a white picture. Power supply as new.
• S2055 defective after switch-on.
• Goes into safety mode when first switch on.
• No contrast.
• US voltage increases, CTV stops.
• Picture slowly darkens. The cathode voltages are ok.
• TV starts up for a few secs and leaves a motor noise in the speaker. By disconnecting DL13, the appliance starts up again. (7238 tip from NORDMENDE)
• Does not come on from standby, red standby light comes on. TV01 and TV02 in the protective circuit respond.
• Reduced vertical size. (+ extract of circuit diagram)
• No picture (intermittently). AV OK .
• Occasionally no scanning is possible.
• Power supply is dead, stand-by mode does not function.
• Remains in "burst" mode with a hum noise in LF.
• No function. Initially LED indication OK.
• Arcing in picture. at top.
• Standby light on, no start up of power supply.
• No sound and no video not even in scart. 3cm white line at top of picture. Green LED on.
• Repeated failure of HOT.
• Horizontal output stage does not start up. (picture attached)
• Picture width and height twitches intermittently, thereby noise or chirping can be heard in SM transformer.
• No PAL colour, either via aerial or via scart. (7238 tips)
• Occasionally there is no light at all.
• No functions. Standby LED lit .
• Functions very well via the scart socket. No UHF VHF reception. Display on the screen is correct, white screen. (with circuit diagram extract) (NORDMENDE - 7238 information)
• No sound and no picture. Appliance remains in stand by.
• At start up standby light comes on then goes off straight away. (part of circuit diagram displayed)
• Occasionally changes channel by itself, channels run through or the function band appears. Occasionally when in standby, the TV switches on all by itself. (picture attached)
• Vertical picture position shifts intermittently upwards approx 2 cm after switch on. It is OK after approx 10 mins. (7238 tips)
• TV does not start up or stops.
• Impossible to go into standby via the front panel or the RC. Starts up at switch on with the red light lit. (picture attached)
• No picture at switch on. Picture appears when changing channel.
• Picture instability depending on sound.
• Power supply pumps every single second.
• Does not switch to standby.
• Picture is green, red and blue with flyback lines.
• Set is dead but not tripping.
• Sometimes switches off by itself or does not switch on.
• Picture is at the lower picture edge and in time becomes a line. (picture attached)
• No horizontal deflection. (picture attached)
• Tripping (intermittently).
• S2000AF in power supply is defective. Functions OK for a week, then S2000AF and primary fuse defective. (picture attached)
• Occasionally loud crackling from the housing. (7238 tips)
• No start-up. Front LED lights up then goes off.
• Tripping. after a few minutes (intermittently).
• No sound with a Nintendo game. Game functions on another TV. (with circuit diagram extract)
• Vertical deflection has collapsed to a bright line in the middle of the screen.
• E/W correction cannot be changed.
• Distorted picture. Strong streaking.
• No synchronisation. in TXT.
• Dark screen. Blue 1cm band at the top of the screen. No access to functions of: volume, channel, standby (no sound or picture). (picture attached)
• Starts up then cuts out, starts up again every 10 secs and so on.
• No start up of line transformer.
• No brightness and incorrect OSD. OSD background is bright red. (part of circuit diagram displayed)
• Vertical foldover.
• PSU does not always start after switch on with the control panel or the RCU. (part of circuit diagram displayed)
• Occasionally fails for a short time (Occasionally does not function for days). (picture attached)
• Incorrect oscillations on line BU (S2055).
• After a few minutes the screen goes black and motor boating occurs.
• Blue picture. Blue streaking. (service info for NORDMENDE -7238)
• Incorrect picture height. Black 5cm bar at bottom, black 2cm bar at top of picture. (service info for NORDMENDE -7238)
• Picture with black bands and sound whistling/tuner drift. (+ extract of circuit diagram)
• No switch on at start up. Standby light is off. At stop light comes on weakly then goes off. (7238 tip from NORDMENDE)
• PSU pulsates. Standby LED flashes . (part of circuit diagram displayed) (7238 NORDMENDE repair tip)
• Slight raster distortion at top or bottom of screen, depending on defective diode.
• Grey screen, no sound, no video in scart output. OSD ok.
• Following a fault on the line there is no colour. Composite video is ok on 53 of IV01 but there is no RGB on 41, 42 and 43.
• Crackling in picture and sound, even in VHF.
• No HV. (with circuit diagram extract)
• Picture shows green, red and blue lines and the raster rattles audibly.
• The channel nos run through, no sound or picture but it works in video.
• When the focus pot is varied the brightness varies after a few minutes, the picture turns dark.
• No colour, only on French channel "La 3".
• Switches off immediately if vertical plug is pulled out. (with circuit diagram extract)
• Setting the main voltage (Usyst. 110V): Chassis. (extract of circuit diagram attached)
• No colour from aerial or scart. IC TA8559CN has been replaced. Wave peaks at MP output are correct.
• Stops for 10 secs after 10 mins. (+ extract of circuit diagram)
• Production mode.
• PSU switches off after start-up.
• No sound. No line transformer and standby LED is on.
• Protection mode activated.
• After being used for 2 to 3 weeks, the 1.6 fuse burns out when the appliance starts up.
• No audio. No picture. Squealing from PSU. (+ extract of circuit diagram)
• Dead (intermittently).
• No start-up. Red LED blinks. (picture attached)
• Remains in standby. Occasionally starts then goes into standby after 5 mins.
• At switch on slight line crackling and no start up. Red LED ok. (extract of circuit diagram attached)
• Tripping. Red standby LED dimming on and off. (extract of circuit diagram attached)
• Amplitude and/or alignment vary intermittently.
• Distorted audio. intermittently.
• No functions. (+ extract of circuit diagram)
• PSU attempts to start up at intervalls. LED lights.
• Colour fault. (service info for NORDMENDE -7238)
• Occasionally after switch on vertical centering is shifted up approx 2cm. Goes into normal position after approx 10 mins. (part of circuit diagram displayed)
• Appliance hums and does not start up. (extract of circuit diagram attached) (NORDMENDE - 7238 information)
• Memory loss or random deprogramming of uP.
• AV switching threshold for camcorders.
• The picture disappears, drifts then reappears for a few fractions of a second and then drifts again. A whistling noise can be heard when the picture reappears.
• Control board CDI 2000.
• Switches to protection mode (after a few seconds).
• Does not switch on immediately when pressing switch, only after loudspeakers click 3 times and standby LED reduces brightness 3 times.
• To improve IF response.
• No picture, only snow. (with circuit diagram extract)
• Red picture. Flyback lines.
• Tripping. Power LED lit . (picture attached)
• Loses programmes from memory at irregular intervals.
• Distorted picture. Lines in picture.
• Does not start up from standby, cracking is audible and appliance switches OFF, standby LED switches off.
• The appliance switches on at random when the remote control is used.
• Picture with predominant yellow/green.
• Programmed on channels but still only snow. Selector does not react on channel inputs.
• No volume control via RC.
• No OSD display. Sound cuts out at channel switch-over. Sound OK at start up. When channels are changed using TV front control keys, channels roll over even when key released.
• Switches off when switching channels. Only switches on again after RC switches to standby. Occasionally functions OK all evening but sometimes switches off when channel is initially changed. (picture attached)
• Faint sound although correct. (7238 NORDMENDE repair tip)
• Only a horizontal line in middle of picture.
• Modification to improve AGC adjustment.
• Standby LED is still lit up. Horizontal white stripe. (part of circuit diagram displayed)
• Starts up in standby. Standby display ok. (7238 tip from NORDMENDE)
• Power supply hiccups. (picture attached) (7238 tips)
• No picture. No sound. Switches off after 3 secs, remains in standby and has an afterglow fleck. (part of circuit diagram displayed)
• No stations found in search. Seems to have poor power supply filtering.
• Pincushion distortion.
• Blank raster.
• Power supply transistor S2000AF blows after operating for one hour. (part of circuit diagram displayed)
• Resistor RT04 on the picture tube base blows repeatedly. (part of circuit diagram displayed)
• No start up except at a certain temperature. Standby ok. (with circuit diagram extract)
• TP29 fails after switch on.
• PSU doesn't start up intermittently.
• Noise bar. at bottom.
• In stand-by the light does not light up and the TV does not come on again.
• Slow start-up (when cold). (+ extract of circuit diagram)
• At start up there is a power supply fault. TP29 must be replaced. After this the picture lacks vertical and horizontal amplitude. Reduced picture which has shifted to the bottom of the screen. (extract of circuit diagram attached)
• Noise on loud speaker and the screen is black. The appliance goes to stand by after a few minutes.
• No audio (via SCART).
• Trips. after a few minutes.
• TV functions, thermal tube noise on the screen but no picture. RCU does not work. Dark display, a channel is displayed, programme nos run through and stops on AV. No sound.
• No function from RC, ok from front panel. RC receiver ok. (with circuit diagram extract)
• Contrast average value is too high. (part of circuit diagram displayed)
• Dull picture. No contrast control.
• White screen. Sparks between pins 6/7.
• No power supply on the uP.
• Bottom of raster is missing. Deflection incomplete.
• Channel programming and saving in SECAM mode.
• No start up of line transformer and LED pulsates slightly. (service info for NORDMENDE -7238)
• Black screen. Channel 0 display on video.
• Low contrast on TXT and OSGs.
• EHT starts. Line pulse then Stop. (part of circuit diagram displayed)
• Picture with red as the predominant colour and flyback line apparent on the screen.
• No functions. via tuner. OK via SCART .
• Power supply pumps. Standby LED flashes.
• No functions. IR01 does not accept reset.
• No start-up. LED is red .
• Stuck in standby. Hum in audio. (with circuit diagram extract)
• No bottom of raster. Incomplete deflection.
• Goes into safety mode for no apparent reason, after operating for 30 mins. Starts up again from the switch. (7238 tips)
• Blows intermittently and switches on again. (part of circuit diagram displayed)
• Distortion, white flags on the left side of the picture. Sometimes negative picture. (extract of circuit diagram attached)
• At the start of production of the new IKC2 chassis, in TVs not fitted in series with teletext, the following components have not been fitted.
• No start-up. intermittently. PSU pulsates.
• At switch on there is a noise and light goes out. (part of circuit diagram displayed)
• Functions for a few secs then goes into standby. Channel change does not occur. (with circuit diagram extract)
• No start-up from standby. (picture attached)
• Regulation fault of the PSU. Standby LED flashes red every sec.
• Raster weakened after a few mins and is reduced to a horizontal lines then TV goes into standby.
• No start up. Standby LED lights up. Cannot be started with the RC. (extract of circuit diagram attached)
• No vertical deflection. (part of circuit diagram displayed)
• Fluctuations of the picture according to the video content.
• East/West amplitude changes with the beam current.
• Tripping. Standby LED flashes .
• Picture modulation in power function.
• Stuck in standby. LED lit. .
• FP01 blows.
• Blows fuses.
• No colour. via SCART.
• Switches to standby. when changing channels. (7238 NORDMENDE repair tip)
• Switches on. Red LED lights, but turns darker after start-up. No start-up via RC. (extract of circuit diagram attached)
• Remains in standby or goes to standby intermittently.
• Does not start from Standby or switches off.
• No audio. via tuner. No picture. via tuner. OK via SCART .
• Fuse blows at switch on. (part of circuit diagram displayed)
• Shuts down.
• After an extended operating time TP01 (BUT12A) fails. (part of circuit diagram displayed)
• The grey scale is incorrect.
• Adjusting the PAL amplitude: chassis.
• Shuts down after 10 mins. Power LED remains lit. (picture attached)
• No reception. in UHF.
• By pressing the buttons PROG + and - on the front panel the channel nos run through continuously. When disconnecting the control panel, difficulties in programming a channel. (part of circuit diagram displayed)
• Line power transistor S2055AF blows immediately after being replaced. (part of circuit diagram displayed)
• Tuning drifts.
• Line transformer blows a few secs later after appliance is started up, line transformer has been changed but fault persists. Output voltage 8.2V instead of 15V on the power supply secondary with the line transformer removed.
• No TXT (intermittently).
• Grey picture with 6 flyback lines without picture content.
• E/W correction can only be poorly adjusted. (with circuit diagram extract)
• Small flyback line at top of screen on left side. (service info for NORDMENDE -7238)
• Fuse and TP29 fail repeatedly.
• Red raster. Horizontal lines.
• EHT S20000AF blows every three days.
• Vertical fault. Black screen.
• At switch on starts up with severe noise in loudspeaker then stops and remains in standby.
• Picture for 30 secs then white screen.
• EHT whistles.
• No voltage at secondary.
• Line output S2000 fails after a while.
• Little or no light.
• No or intermittent start-up. when cold.
• Unstable picture.
• No start up of PSU, sometimes intermittently.
• The appliance stops after a few minutes then starts up again. (with circuit diagram extract)
• Dark picture. Audio OK .
• No frame sync in PB of recent rented cassettes.
• Picture rolls. (with circuit diagram extract)
• How to remove protection.
• No start-up. (+ extract of circuit diagram)
• Switches on but switches off after a few mins. Intermittently switches off immediately.
• Vertical stability fault. (with circuit diagram extract)
• After appliance has been moved, strange colours. Red has become blue and screen is affected by a mauve halo.
• Flickering at switch on. (part of circuit diagram displayed) (NORDMENDE - 7238 information)
• Intermittently picture has no contrast and has a blue tinge. Sound ok.
• No start-up (when cold). (+ extract of circuit diagram)
• Goes to SAFETY mode and no scanning possible.
• Intermittently shuts down briefly (sometimes after two hours).
• DL13 is S/C.
• Occasionally static discharge.
• No voltages at the secondary of LP36. Standby light on.
• White screen with no snow. Normal sound. OSD functions. Same fault via scart. OK in RGB.
• Starts up then stops immediately afterwards when ON/OFF switch pressed. (picture attached)
• No picture. (picture attached)
• No start up. Standby light comes on.
• Picture shifted vertically.
• White screen in scart and no sound. Picture ok via tuner. Displays programmes and sound level etc.
• Zigzag pattern across whole screen.
• Snow on the screen.
• Picture and sound hang up.
• Power supply starts up 3 times at switch on then switches off. No picture or sound. Red LED is lit.
• No picture, only three lines two thirds of the way down the screen. Goes into SAFETY mode after 1 min. (part of circuit diagram displayed)
• The power supply pulsates at start-up.
• Dead. LED briefly flickers twice.
• No videotext mode.
• White screen. Audio OK .
• Dark picture (after a while).
• Distorted picture. No adjustment possible .
• Shut down protective circuit.
• Compressed vertical. Extremely dark picture, more on the right than on the left.
• Switches off after approx 3 secs. PSU switches on with brief chirping noise and then switches off.
• At switch on, the appliance goes to stand by. After trying to start several times the TP19 and TP29 are damaged.
• No picture or OSD information. RC and front panel do not function.
• The appliance has a dark picture. (NORDMENDE - 7238 information)
• No picture. OSD OK .
• White line. at bottom.
• Line on the screen at the start. (+ extract of circuit diagram)
• TV01 and TV02 are in safety mode.
• TP29 is destroyed after 30 minutes.
• No functions. Standby LED is not visible. (7238 tips)
• Crackling effect on video and echo.
• Tuning drifts after 20 mins.
• At start up, starts up then stops. Standby light remains lit. (7238 tip from NORDMENDE)
• Remains in standby. Hum in loudspeakers. (picture attached)
• Black stripes on upper and lower picture edge.
• No picture, light line under the picture tube. (picture attached)
• Dead. Power LED lit . (with circuit diagram extract) (NORDMENDE - 7238 information)
• Picture is dark, screen menu ok.
• FBT is started up by a signal but appliance does not start. In standby mode.
• No tuning, maximum tuning voltage.
• Switches on but no user controls from front control panel nor from RC. Does not even switch to FF.
• White stripe on the left side of screen.
• The power supply starts up jerkily but occasionally does not start up at all. (+ extract of circuit diagram)
• Blank screen.
• TP29 and TL19 fail after operating for 1 hr. (+ extract of circuit diagram)
• To improve operation of mute circuit.
• Chopper goes short circuit; after replacement appliance functions correctly for approx 1 minute.
• Black screen, alarm noise and orange LED. (7238 tips)
• When 120V at variac, UL1 reaches 280V.
• CTV in standby one hour. After CTV does not start up from remote control or front panel. TV stops with the switch. Waits 30 mins. Starts to work again with switch. Functions ok with the remote control and front panel. (with circuit diagram extract)
• Functions for a few secs then goes into safety mode. Functions without the raster deflector.
• No EHT. Black screen.
• In breakdown mode with 2.2K, pin 20 and 32 have been removed, EHT but 300V pulsates instead of 600 or 700V. 100V at the start of video but everything collapses if you refit DL13.
• Volume varies (intermittently).
• Occasionally sound and video drift on channel 64. Operation is good on the other channels.
• Unstable vertical scanning with foldover in the picture. (extract of circuit diagram attached)
• No audio. when cold.
• Starts nomally but if appliance stops after heating up for some time, TV flashes and may take a long time to start up again. (with circuit diagram extract)
• Picture is displaced towards bottom of screen (approx. 5cm to 15cm).
• Poor audio.
• Power supply pulsates intermittently when cold or warm.
• TV starts up well but with a lot of noise.
• No picture scanning.
• TL19 in line output stage is defective.
• TP29 blows occasionally at start up or after operating for some time.
• White field with flyback lines.
• Blue flash in Secam.
• No start up. No U1 47V, U2 5V voltages.
• Poor picture after 15 mins from start-up. Audio OK. (extract of circuit diagram attached) (NORDMENDE - 7238 information)
• HV and U-sys too low.
• No E/W correction. when cold.
• Safety mode comes into play.
• Power supply transistor TP20 blows and so does the mains fuse FP01 after operating for a few mins.
• At start up line transformer powers up then appliance goes into standby.
• Transistor TP29 (S2000AF) fails repeatedly. (extract of circuit diagram attached)
• Normal sound, white screen, no picture, flyback lines. Impossible to reduce the brightness.
• Switches to standby.
• Volume becomes louder after few mins, cannot be adjusted.
• Dark picture. No audio. OSD OK .
• White screen, no picture. Sound ok on all channels. Same via scart.
• To improve alignment.
• When playing back a cassette previously recorded by the same VCR, colours may be lost or blue flash interference due to the PAL pulse of the TV being triggered.
• Maximum luminance.
• Adjusting the peak white: chassis.
• IR01 loses memory without any apparent reason.
• One start-up attempt with HV,then switches to standby.
• No colour (when switching).
• No signal.
• Does not start up. Standby lit. Slight motor noise in speaker.
• Value of capacitor position CP11 (power supply). (+ extract of circuit diagram)
• No more line scanning possible. RL25 cuts out.
• Lines appear at top of screen or interference then goes into safety mode. At present it goes into safety mode each time after 2-3 secs. (part of circuit diagram displayed)
• Plastic effect. Does not decode Channel +.
• Slow start-up.
• Commands performed with a delay.
• Ignition on the EHT (flame). (with circuit diagram extract)
• At switch on the vertical centering is off by 2cm at the top.
• No colour. (with circuit diagram extract)
• Dark picture. (part of circuit diagram displayed)
• Switches on, line transformer comes on then goes into standby immediately.
• Intermittently trips off for approx 1 sec.
• No power supply. No standby on front panel. (part of circuit diagram displayed) (7238 NORDMENDE repair tip)
• Channels scroll. Functions if control panel plate on front panel is disconnected.
• White picture, flyback line and too bright.
• Horizontal size varies. depending on picture content.
• Picture pulling on bright scenes.
• CTV blown, if connector BF01 remains connected. Vertical scanning line is at bottom of screen.
• Reduced horizontal size. (7238 NORDMENDE repair tip)
• TDA8178 heats up too much and blows.
• S2000 blown.
• Burst of EHT. (picture attached)
• Occasionally TV does not start up and remains in standby.
• Picture shrinks and a white band appears at bottom of screen after a short period of time.
• Dark screen.
• LED is dim or OFF. (7238 tips)
• Power supply pulsates every single second. Standby LED flashes.
• Replacement kit of thyristor ESM740/G1/G2.
• Standby LED switched on, becomes green for an instant. No start up. Power supply sends pulses.
• At switch on PSU goes defective. (NORDMENDE - 7238 information)
• Goes to standby at switch-on. Trips slowly if programme button held on. (picture attached) (NORDMENDE - 7238 information)
• White screen. Flyback lines.
• The appliance fails, no picture, no sound, base raster or horizontal lines.
• Vertical picture has shifted to top by approx 2cm at switch on. Picture OK after approx 10 mins.
• Flag effect when playing back with a VPH6400 Thomson VCR. Ok via scart.
• When warm picture foldover towards the bottom and horizontal flyback lines. Noise from the line transformer. (part of circuit diagram displayed)
• Line transistor blows after 10 mins. DL11 98V instead of 200V.
• No picture. via SCART. Audio and HV OK .
• TL19 in the line output stage is defective. (extract of circuit diagram attached)
• Chroma decoding.
• At start up functions normally for 20 to 50 secs then goes into standby prematurely. (picture attached)
• Switches off by itself. when changing channels. (picture attached)
• Trapezium distortion on top in picture, no functions.
• Picture is OK although raster has moved up. (with circuit diagram extract)
• No reception. EHT flashovers.
• Intermittently blue picture with traces of blue flyback lines.
• Tube tries to switch on then switches off. (+ extract of circuit diagram)
• When cold picture is very white with flyback lines and hum in sound.
• Rainbow effect on top of screen.
• No OSD via RC or front controls. Screen is lit, snow present. No sound or picture. (with circuit diagram extract)
• BU transistor TP29 blows again.
• Dark screen, sound OK. Nothing in scart nor in RGB.
• Vertical line. in the centre.
• Beat at startup.
• At start up snowy screen with no reception. When pressing the programme keys the numbers run through continuously. No sound.
• Switches off immediately without becoming bright. (part of circuit diagram displayed)
• Colour saturation.
• Starts up three times then goes into safety mode. (extract of circuit diagram attached)
• Picture has vertically shifted with approx. 2cm towards top after start-up. Picture ok after approx. 10 mins.
• Impossible to display the PAL SECAM standards. (with circuit diagram extract)
• White dotted lines appear on left of picture in VHF/Band I reception.
• Buzzing and chirping, then switches to standby.
• Stuck in standby. LED is red . (picture attached)
• Fault at top of picture about 4cm after 30 mins.
• Switching off fault of the spot.
• Wavy picture.
• Intermittently black band in the middle of the screen then increases in size to fill the whole of the screen. (picture attached)
• The picture blows. (7238 NORDMENDE repair tip)
• TL19 becomes hot and fails after approx 15 secs. (7238 NORDMENDE repair tip)
• Difficulty switching on at a high temperature (40°C). You can no longer switch on the appliance with the RC. (extract of circuit diagram attached)
• Random coloured flash.
• Replacing the TL19.
• When warm picture and sound increase then switches into standby. (part of circuit diagram displayed)
• No NS correction. (7238 tips)
• No colour (after a while).
• Poor scan.
• Black picture like in AV at switch on. OSD and channel display function. In AV picture ok but no reception via the aerial. No snow.
• No power supply secondary and no standby.
• HT starts up for 2 secs then TV goes into standby.
• Teletext clock stops. Each 5cm high part of the picture is missing.
• No picture. via tuner. OK via SCART .
• Appliance in burst mode. No standby light.
• No start-up (intermittently). (picture attached)
• Starts up then goes into protection mode. Standby light on. Sound OK but no picture. Bluish screen with shadows.
• Intermittently PSU doesn't start up via RC and mains.
• Picture is displaced slightly towards top of screen.
• No manual or RCU command. Blocked on one channel, OSD apparent, sound present. (extract of circuit diagram attached)
• No sound or picture. Slow beat of the power supply each second. The light flashes. (with circuit diagram extract)
• Crackling noise from power supply then dead.
• Bright picture. Flyback lines.
• Position of RA13 and RA15.
• Power supply BU blown at switch on.
• Starts up with difficulty. Line transformer only starts up after several attempts.
• Collector of the line line output transistor disconnects when soldered. (extract of circuit diagram attached)
• FP01 and TP29 blow at Power On. (extract of circuit diagram attached)
• HT whistles for a short time. Standby LED remains lit. Raster is defective. (picture attached)
• The picture is smaller and at the bottom of the screen.
• Line transistor S2000AF heats up then fails. E-W geometry ok.
• Only noise.
• High voltage transistor fails repeatedly.
• Device shuts down when zapping.
• No horizontal deflection. Audio OK .
• Dead. No voltage on the secondary. 300V on collector TP29. All the transistors and diodes are ok. Even no standby light.
• No audio (intermittently). (service info for NORDMENDE -7238)
• Picture vibrates in the rythme of sound.
• Line in centre of picture.
• No functions. after warm-up.
• Screen lit up. No sound or picture. Thermal noise in the sound and snow. No function via RC or control panel (part of circuit diagram displayed)
• Appliance works only in Burst mode. Red LED flashes.
• PSU does not always start after switch on via front control or RC.
• Poor audio (via SCART).
• Adjusting the SECAM (4,25MHz) colour carrier trap: chassis.
• Regular ondulations on the vertical lines of a test picture. (+ extract of circuit diagram)
• Tripping. (extract of circuit diagram attached)
• Switches to protection mode (after start-up). (extract of circuit diagram attached)
• TV does not start up. TV01 not in safety mode.
• In playback, especially with prerecorded cassettes the picture oscillates horizontally or is distorted like a flag in the top part of the screen. (7238 tips)
• Grey screen. No audio. OK via SCART .
• Vertical lines run over the whole screen.
• Power supply starts up and switches to stand-by after a couple of seconds. (extract of circuit diagram attached)
• Menu display is in a wrong language.
• Pulsates if TV is started up after being put into standby.
• PSU goes into safety mode.
• Low contrast.
• Goes into standby after a few secs. Appliance and EHT start up well at switch on.
• Crackling in the speaker at start up and at switch off including standby. Slight noise in the speaker in standby. Occasionally trips at start up.
• U/Syst voltage is 106V. (extract of circuit diagram attached)
• No voltages on the secondaries and no light.
• No luminance, white is black.
• Power supply fault. Remains in standby. (picture attached)
• Intermittent switches to standby during programme or scene change. (extract of circuit diagram attached)
• Power supply chopper blows.
• Vertical jitter.
• Snowy picture. No reception in channel search.
• Switchover to another program site is not carried out.
• Starts up then switches off. Remains in standby when cold.
• There is little light.
• Horizontal black bars appear on screen. Parts of TXT picture are missing. (service info for NORDMENDE -7238)
• Distorted audio. Distorted picture.
• Power supply stops.
• Black and white picture. No RGB on 41, 42, 43 of IV01. 200V on DL11 is correct.
• Screen blank. Dark picture. (7238 tips)