54337940 / SCHAUBLORENZ [TV (Standard)]

• FBT blows after a few mins. (part of circuit diagram displayed)
• Goes into safety mode at switch on. If FBT is unsoldered then HT is re-established. No apparent S/C in secondary of FBT. (extract of circuit diagram attached)
• Motorboating noise at switch on. Pin 13 of the TDA8372A is unsoldered. TV no longer pulsates. Power supply voltages ok. (picture attached)
• Picture shifted horizontally. (with circuit diagram extract)
• Stuck in standby; RC ineffective. Stanby LED flickers. (part of circuit diagram displayed)
• Hums at switch on. (extract of circuit diagram attached)
• Insufficient picture heigth (10cm) and severe linear distortion.
• Transistor T701 fails when appliance is switched off and on.
• Excessive horizontal size. (picture attached) (54337940 SCHAUBLORENZ repair tip)
• No start up after changing FBT and constant whistling noise. (extract of circuit diagram attached)
• Starts with noise (approx. 2-3 seconds), then it operates normally. (with circuit diagram extract) (54337940 SCHAUBLORENZ repair tip)
• Approx. 1cm bright, vertical line on the right hand side of the picture approx. 10cm from the edge.
• Line output stage fails at switch on. With load (lamp) appliance can be switched on with squeaking noise. (with circuit diagram extract)
• No vertical deflection. Horizontal line. Audio OK . (part of circuit diagram displayed)
• Occasionally blue screen. Picture ok when G2 adjusted then disappears again. When pressed too much picture remains incorrect then disappears.
• After transporting an appliance, the first time it starts up there may be distorted playback of colour (flickering, drop out or stripes) and/or defective teletext playback.
• Noise in audio. (extract of circuit diagram attached)
• Especially when cold some channels are not in the French standard. They remain in FM sound and inverted video. When warm and when changing programme suddenly picture and sound appear correctly. (with circuit diagram extract)
• HT starts up, appliance switches off immediately. Power supply with lamp OK but documentation states voltage must be 60-100V when pin 4 of line transformer disconnected and lamp connected to D765 60-100V. Voltage in this case is 145V.
• Dark picture. Stripes after a while. OK after warm-up. (extract of circuit diagram attached)
• Very pale picture which is shifted to the left. Voltage is correct. (part of circuit diagram displayed)
• Control unit does not function. Does not switch on. (with circuit diagram extract)
• Horizontal collapse. after a while. (picture attached)
• Switches on for a short time with RC, then switches off. "I" and "II" flicker on display. LED doesn't light. Starts up again with RC, if previously disconnected from mains.
• Unstable horizontal picture.
• Shuts down. after start-up. (picture attached)
• Lines in picture.
• Pincushion distortion.
• Loses sync at start-up for a few minutes.
• Vertical jitter. when cold.
• Secondary voltages appear for 1 to 2 secs. then nothing else. Standby LED switches off.
• Defective linearity.
• Power supply seems to remain in safety mode. (+ extract of circuit diagram)
• When the appliance is switched on it goes into undefined operating conditions ie. in spite of correct operating voltages the appliance has eg. no picture, no sound, no display etc.
• No functions. after a while.
• HV builds up briefly and then shuts down
• Only blue light at right in picture.
• Blanking interval on left side of picture, colour flickers and screen dark after a while.
• Bright vertical stripes. No picture content. Sound OK. (extract of circuit diagram attached)
• Channel TF1 (channel 22) does not hold in SECAM: remains in PAL. The other channels are normal.
• No vertical deflection. Only a horizontal bright line appears on CRT. Audio OK. (picture attached)
• Tripping.
• Programmes change by themselves. RC is OK.
• Slightly wavy picture in the middle of the screen. (part of circuit diagram displayed)
• Poor audio.
• E/W fault. (extract of circuit diagram attached)
• If switched to standby, appliance pulsates and can be heard in loudspeakers. (extract of circuit diagram attached)
• Intermittent no image or yellow colouring. Knock sensitive. (part of circuit diagram displayed)
• No TXT (intermittently).
• No tuning. only on certain channels. Dark screen. on the right. (54337940 SCHAUBLORENZ repair tip)
• Dead. after start-up.
• Standby display lights up briefly, then no function.
• Coloured lines (RGB test lines) in top of picture. (54337940 tips)
• Noise in the speakers and no start up or display on the front panel when switching on. (part of circuit diagram displayed)
• Approx 20cm wide dark area in centre of picture and line tearing. (54337940 tips)
• From a cold start line output stage transistor fails.
• As described in the manual it is possible to operate the video recorder on all program places through the aerial. But some appliances only change over on channels 37-39.
• Unclear picture with Hum content.
• Does not switch on. Fluttering noise from the loudspeakers. (part of circuit diagram displayed)
• White screen, horizontal lines without video signal. OK on scart output T971 OK IC950 OK. No beam limiter on 15 of IC950. Flash on the screen when changing channels.
• After the appliance is switched off a large spot of light appears for several seconds in the middle of the screen. (with circuit diagram extract)
• Erratic functions. (picture attached)
• No functions. (54337940 tips)
• Does not fully go to TXT or only blue mix TXT. (with circuit diagram extract)
• Poor shading of picture, dark on one side and light on the other. (picture attached) (SCHAUBLORENZ - 54337940 information)
• Horizontal synchronisation fault even after replacing TDA8372. Weak adjustment with pot R634. Line synchronisation OK. Comparator OK. Horizontal linearity is OK. (part of circuit diagram displayed)
• No horizontal or vertical deflection.
• No colour (intermittently).
• PSU is defective. 300V is present.
• Switches to standby (intermittently).
• Time constant switching over only occurs on memory sites 37 to 39 and AV.
• Focus problem. Blurred vertically, ok horizontally after replacing microprocessor and line transformer.
• Line frequency changes downward (squeaking, whistling).
• Brightness differs between left and right hand side of the screen.
• Black picture. Sound OK. Picture is OK after restart. (+ extract of circuit diagram)
• Picture amplitude is too weak.
• Sound cracks. Switches off. Display stays. Can be restarted with RC. (+ extract of circuit diagram)
• Poor adjustment of horizontal picture centering. (+ extract of circuit diagram)
• Remains in standby. Starts up when wiper forced. 88 on display. No picture and no sound. Goes into standby as soon as switch is released. (part of circuit diagram displayed)
• Vertical lines. No colour. after a while. (54337940 tip from SCHAUBLORENZ)
• No tuning.
• Display flashing and rattles at switch on. (with circuit diagram extract)
• When ON/OFF switch is pressed LED lights up and then switches off. If line BU is replaced by lamp, it lights up and collector goes down to 124V instead of 155V. (with circuit diagram extract)
• T501 fails repeatedly.
• Dark screen, only diffuse glow.
• NICAM check.
• Dark picture. on the right. (picture attached)
• At start up the power supply starts up for 2 secs then the appliance apparently goes into safety mode. No fault on the secondary.
• Line BU is abnormally hot.
• No raster sync in HF. Ok in scart. (part of circuit diagram displayed)
• Picture is out of alignment horizontally. 10cm black bar on the right. (extract of circuit diagram attached)
• Blank raster.
• No TXT.
• No start-up (when cold).
• No start up after changing IC601. Nothing lights up on the front.
• Does not switch ON. No power light showing.
• Reduced raster size. (part of circuit diagram displayed)
• Unstable picture. (+ extract of circuit diagram)
• Picture shifted to the left. Alignment works normally. (extract of circuit diagram attached)
• PSU doesn't start up when cold. (+ extract of circuit diagram)
• Whenever a function is requested display lights up then switches off.
• Standby display lights up for a short time. Line output stage attempts to function, but switches off immediately.
• 10cm black bar on the right of the screen. Voltages ok, corrections work. (part of circuit diagram displayed)
• EHT is heard starting up then everything stops 4 secs later.
• Cuts out after switch on, soft hum from the speakers in standby mode.
• At switch on, functions but with no picture. By pressing the CRT module it unblocks and the picture appears. Predominant colour depends on the pressure used.
• The plug receptacle of the teletext decoder, which is contained in the additional component, does not fit mechanically into the socket receptacle of the appliance chassis.
• NICAM is missing. (SCHAUBLORENZ - 54337940 information)
• Noise in picture. Poor horizontal synchronisation. (SCHAUBLORENZ - 54337940 information)
• Excessive HV. (picture attached)
• Few segments of the display too bright. Doesn't respond to commands.
• Only standby LED lit. LED switches off at switch on then no function.
• Line transformer starts up with an amplitude of 400V blemished by many interference lines.
• Vertical IC fails. (with circuit diagram extract)
• PSU pulsates. Sound crackles. After few secs. appliance works fine.
• Black vertical bars on picture, mostly visible in AV with no video source. (part of circuit diagram displayed)
• Ok with signal. Without signal: unstable line frequency, line stage transformer makes a loud whistling noise and T511 (scanning transistor) shorts. (with circuit diagram extract)
• Shuts down. (+ extract of circuit diagram)
• Text selection is not possible, takes only Mix or full text but not both. Also various other functions are defective.
• Picture is too wide. E/W distorted.
• Picture tearing.
• When appliance receives in Nicam stereo, the TV goes into PAL.
• Sound channel 1 and 2 voltage level adjustment.
• Horizontal white line.
• Instructions on how to put appliance into Service-Mode.
• Distorted vertical linearity. Barrel distortion. (with circuit diagram extract)
• Very slight flickering with a light picture. (part of circuit diagram displayed)
• Brightness varies. E/W fault. intermittently.
• PSU cannot be started from Stand By. 145V voltage in an unloaded condition is at approx 105V, the connected lamp does not light up, the voltage then collapses to approx 20V. (+ extract of circuit diagram)
• Slow start-up. when cold. (picture attached)
• Loud noise. at start-up.
• Operation commands are not carried out.
• No start-up. (part of circuit diagram displayed)
• Programming menu can not be accessed. (extract of circuit diagram attached)
• Afterglow on deflection tube after switch off.
• Picture only appears about 3 mins after switch on, when appliance is cold.
• Dark picture. intermittently. (54337940 tips)
• Grey picture at switch on and sound which disappears after 15 mins. Grey screen with frizzy line on the sides when pressing G2.
• Excessive vertical size. Vertical foldover at bottom.
• Line foldover by start-up. No sound. After warm-up, picture and sound are OK. Sync is still unstable. (54337940 tips)
• PSU doesn't start-up or only after a while. Cracking sound.
• Picture appears slowly. (+ extract of circuit diagram)
• No synchronisation (after start-up). (picture attached)
• Line synchronisation available only after 2 mins.
• Centre of snowy picture is darker than edges. (extract of circuit diagram attached) (54337940 tips)
• Picture distorted, shifted upwards and a little bit too wide.
• No tuning. Higher channels in band I/III/V are not received.
• Dark picture.
• Horizontal shaking. when cold.
• No HV.
• At Power On standby LED switches off immediately after switching on.
• High voltage transistor (S2000) defective. (+ extract of circuit diagram)
• The teletext contrast is considerably too high after installing the teletext decoder.
• No picture (intermittently).
• Switches to protection mode. at start-up. (+ extract of circuit diagram)
• E/W-fault.
• Picture rolls. when cold. (part of circuit diagram displayed)
• Hums at switch on, dies out slowly.
• One side of picture is black.
• Poor PSU start-up or BU defective. (extract of circuit diagram attached)
• Low brightness. Picture too big. (service info for SCHAUBLORENZ -54337940)
• Goes into PAL reception when in NICAM reception on channel 64, programme N1. (54337940 SCHAUBLORENZ repair tip)
• No start-up from standby.
• Black screen. Display flashes once at switch on.
• Front LED briefly lights up at switch on then it switches off. LED remains lit when mains plug is connected and disconnected but it definitely switches off at start up. (service info for SCHAUBLORENZ -54337940)
• Impossible to adjust synchronisation. Picture shifted towards left. Right side of picture reduced by 8cm. (with circuit diagram extract)
• Picture takes 15 secs. to appear. Sound ok and EHT present.
• Line tearing. (part of circuit diagram displayed)
• Left picture side is brighter, even via AV. (+ extract of circuit diagram) (54337940 tips)
• Resistor R775 is defective.
• Output transistor (S2000) fails when started from cold.
• PSU starts briefly, then no more HV. (with circuit diagram extract)
• Picture is distorted and changes. Loss of colours. (extract of circuit diagram attached)
• No picture. Hum in audio.
• LED lights up briefly then nothing more.
• High voltage runs high. Flashover all over.
• Resistor R515 becomes defective. (+ extract of circuit diagram)
• White point when switching off with ON/OFF switch. No point in standby.
• Reduced contrast, especially on one side of the screen. (54337940 SCHAUBLORENZ repair tip)
• Top third of screen has ragged vertical lines.
• Intermittently line tearing in the middle (approx. 20cm wide). (extract of circuit diagram attached)
• Stops after 5 seconds. No standby LED. (part of circuit diagram displayed)
• Buzzing at start-up.
• At switch on, lights light up for an instant, voltage which ought to reach 145V increases to 60V but then goes back to 0V. (extract of circuit diagram attached)
• Picture is brighter on the right. Poor synchronisation after program switch-over. Picture becomes brighter and darker in AV. (with circuit diagram extract)
• No picture. on lower half screen. (picture attached)
• AV correction.
• Line transformer starts up but no display, nothing on the screen and no sound. (picture attached)
• No colour.
• Motorboating noise at switch on. When you change IC701 the TV starts up again, it is possible to switch it off and to start it up by using standby. Otherwise, the fault starts again. (with circuit diagram extract)
• Illegible display. (+ extract of circuit diagram)
• No horizontal synchronisation. at start-up. (with circuit diagram extract)
• Stuck in standby.
• Poor vertical linearity at the bottom, also E/W error.
• No E/W correction. (extract of circuit diagram attached)
• Intermittently line transistor defective at start up. Fault also occurs intermittently in channel search or when switching to another channel. Once appliance runs, it runs well.
• Automatic B/G-L detection does not work correctly with the Nicam sound carrier (TF1, FRANCE 2).
• Random operation commands.
• No functions. Red LED does not flash.
• Excessive brightness. Flyback lines. (+ extract of circuit diagram)
• No synchronisation during the first few mins. (with circuit diagram extract)
• Picture shifted to the right. (54337940 tips)
• Switches off when selecting a function via RC.
• Horizontal jitter. Vertical jitter. (extract of circuit diagram attached)
• Only snow in the picture, after changing the tuner the fault is still there.
• Switches off immediately after plugging in mains. (extract of circuit diagram attached)
• E/W trapezium does not function.
• Line transistor S2000AF defective at switch on from cold. (with circuit diagram extract)
• Wavy picture. at top. (picture attached)
• Appliance whistles. Sound and picture present. Picture interference (lines approx one centimeter apart over the whole of the picture).
• No PSU start-up.
• In a grey area - independent of colour saturation - you can see 2 vertical zones approx 15cm wide, greeny blue in colour with coloured edges.
• Does not go into TXT mode. Mixed mode possible.
• PSU chirps, at the same time bubbling and hum in loudspeakers. No functions. (part of circuit diagram displayed)
• Comes on for a short time. (with circuit diagram extract)
• Picture shifted to the left. (picture attached)
• Does not go into text mode, mix mode is not possible.
• Picture collapse on half of the picture.
• DF-AF adjustment.
• Poor synchronisation. No picture. after a while.
• Hum bars, especially on yellow or orange background.
• No vertical deflection. intermittently.
• Wavy vertical lines in the entire picture when cold. Picture jitters. (part of circuit diagram displayed)
• Vertical hum bars on picture, sometimes very visible and sometimes hardly at all.
• Picture too big. (extract of circuit diagram attached)
• Line BU voltage = 140V. Value of capacitor C701 (in PSU) illegible. Still no display if line BU disconnected. (+ extract of circuit diagram)
• Poor line and picture synchronisation when cold.
• Excessive brightness. in the centre. (picture attached) (service info for SCHAUBLORENZ -54337940)
• Whistling HT. No start up due to incorrect HT frequency. May blow S2000 immediately. (with circuit diagram extract)
• Attempts to start with no result. (picture attached)
• Vertical line tearing. intermittently.
• Intermittent flyback lines. Grey scale varies intermittently. Possibly no picture.
• Collapses at start up, then switches off.
• At the top edge of the picture an unusual stain effect appears and line tearing.
• Picture shifted to the left, too small and not adjustable. (part of circuit diagram displayed) (service info for SCHAUBLORENZ -54337940)
• Vertical dark bands running from left to centre of picture and separated by approx. 5cm.
• Distorted picture. on the right. (part of circuit diagram displayed)
• Vertical, bright stripe faintly visible in the right third of the picture.
• Blank screen with purple haze at left hand side. (with circuit diagram extract)
• White screen. Flyback lines.
• Power supply hiccups.
• No horizontal synchronisation. (picture attached)
• Motorboating noise at switch on then goes into standby. When frame IC is unsoldered TV starts up. (extract of circuit diagram attached)
• PSU can not be loaded with 60W incandescent lamp. (54337940 SCHAUBLORENZ repair tip)
• Dark picture on 2/3 of screen on the left but brighter on 1/3 of screen on the right. (part of circuit diagram displayed) (54337940 tip from SCHAUBLORENZ)
• No audio (when cold).
• Control unit processor is defective. (extract of circuit diagram attached)
• PSU switches from standby to safety mode at switch on.
• Strong blue dominance at top of picture. Rest of picture (approx half) ok. (part of circuit diagram displayed)
• Cycles on/off.
• Double picture.
• Blue, vertical stripe in the right third of the picture.
• No start up, no standby light, variable voltage on pin 16 of IC701. (picture attached)
• Does not start from Standby.
• Shadowing effect, left side of picture is brighter than the right one. (+ extract of circuit diagram)
• Too wide picture and East/West pincushion curving outward. (+ extract of circuit diagram)
• Horizontal jitter. when cold.
• Power supply defective after a few days. (+ extract of circuit diagram)
• Line tearing. at top. (extract of circuit diagram attached)
• Poor PSU start up. Severe crackle in the loudspeaker.
• Eliminate safety mode of PSU.
• Bright raster. Flyback lines.
• Horizontal picture position is incorrect, 5cm to the left. No picture intermittently. (picture attached)
• Picture goes off after 1 minute; very low contrast, ok through scart. (extract of circuit diagram attached) (SCHAUBLORENZ - 54337940 information)
• Black bar on the right side of the screen. Similar to displacement. (with circuit diagram extract)
• No picture. Audio OK . (with circuit diagram extract)
• Horizontal line.
• Intermittent block.
• Picture shaking in a random direction. (picture attached)
• Will not select text, or will only select mix or full text but not both, various other functions faulty.
• Dead.
• Builds up high voltage for a short time and then switches off. (with circuit diagram extract)
• Black bars on the bottom of picture. If V-amplitude is altered, picture disappears on the bottom. (part of circuit diagram displayed) (service info for SCHAUBLORENZ -54337940)
• Picture shifted to the left. Sometimes picture fails completely, then still only picture blanking stripes visible. (picture attached)
• Pulsating picture. (with circuit diagram extract)
• At switch on appliance pulsated then reverts to standby again.
• Faulty colour (green tinge, on upper picture edge, intermittently present). B/W picture OK. TXT and menu are OK too.
• The picture is too large and wavers.
• Blocked control processor.
• At switch on picture is condensed tnen enlarged. Pops loudly at approx 2 pulses per sec. Intermittent blast from speakers. (extract of circuit diagram attached)
• No picture. No audio. (extract of circuit diagram attached)
• No control and cannot be switched off when started up from standby.
• Intermittent loss of brightness, picture is black. Can be adjusted with RC. Or vice versa, picture is too light and can be adjusted.
• Picture with vertical and horizontal lines (when cold).
• Unusual TXT.
• HV appears briefly and then disappears. (with circuit diagram extract)
• Reduced vertical size.
• Impossible to adjust the horizontal synchronization. Picture has shifted 10cm to the left. TDA 8372A on pin 20 has already been replaced, sandcastle incorrect. Power supply is good. (with circuit diagram extract)
• Faint and too dark picture. Low brightness, contrast cannot be adjusted. Colour is adjustable.
• High voltage build up for short time then PSU switches off. (+ extract of circuit diagram)
• Horizontal stripe. in the centre. (SCHAUBLORENZ - 54337940 information)
• Horizontal synchronisation fault, picture shifted towards left side. (extract of circuit diagram attached)
• Picture with a 10cm vertical band on the right side. Negative picture behind this black band. (SCHAUBLORENZ - 54337940 information)
• Flashing picture. (+ extract of circuit diagram)
• Remains in standby after changing power IC. (+ extract of circuit diagram)
• After approx 20 mins colour TV switches off.
• Convex picture. Defective lower linearity. (picture attached)
• When TV started up, transistor (S2000AF) instantly burn out. (picture attached)
• Vertical and horizontal synchronisation available only after 2 mins.
• Halts at switch on when cold. No start up. OK after a few attempts. (picture attached) (54337940 SCHAUBLORENZ repair tip)
• No HT output from power supply. OK in standby. (picture attached)
• Bright picture. on the right. Dark picture. on the left. (with circuit diagram extract)
• Enter service mode.
• Picture and sound missing. Via scart socket with video recorder OK (extract of circuit diagram attached)
• Long picture at start up, black screen with rainbow spots.
• Dark screen at start up. Line transformer ok with flyback lines. Top 2 or 3 lines ok. In PB apparently functions around the IC TDA8372A. (+ extract of circuit diagram) (54337940 tip from SCHAUBLORENZ)
• At switch ON, set screams. Pressing on the on/off switch gives same condition. Standby LED's off.
• Dark screen. on the right. (picture attached)
• Intermittently dead. (extract of circuit diagram attached)
• Vertical curtain-like stripes which may be distributed over the entire screen. (+ extract of circuit diagram) (54337940 tip from SCHAUBLORENZ)
• Vertical or horizontal picture shaking both when hot and cold. (with circuit diagram extract)
• Can be switched to standby only if power plug is pulled out.
• White, horizontal lines at the top of the picture. Lines decrease after a while but never disappear completely.
• PSU fails intermittently. (part of circuit diagram displayed) (54337940 tips)
• White horizontal stripe about 5 cm from the bottom. Picture content bellow stripe is altered and noisy.
• Does not switch to standby. (extract of circuit diagram attached)
• Switches off completely after switch on. No standby function. (extract of circuit diagram attached)
• Rattling noise or bubbling at start-up (when cold). (extract of circuit diagram attached) (54337940 tip from SCHAUBLORENZ)
• Vertical IC (TDA3654) becomes hot, then fails after several hours. Picture OK. (with circuit diagram extract)
• Does not start up each time. When it functions, whistling and modulation of picture. This gets less in time.
• 88 shown on LED display. (54337940 tip from SCHAUBLORENZ)
• No picture content. Picture is greyish. (part of circuit diagram displayed)
• Blue screen. Flyback lines. Audio OK .
• Switches to standby when mains switch is plugged in. Switches off when using RCU. (with circuit diagram extract)
• Vertical collapse. (part of circuit diagram displayed)
• HV arcing. (picture attached)
• Picture has moved approx 10cm to the left. Vertical black bar with a few coloured streaks. Colour OK. (with circuit diagram extract)