7510 1400SPECTRA / NORDMENDE [TV (Standard)]

• Cannot be switched on or switched to standby. Standby indicator does not light up.
• At start up 90V makes 12V. After 2 mins picture and sound present but 90V reaches a maximum at 85V. (7510 NORDMENDE repair tip)
• Picture is dark or partially ther.
• Dark picture.
• Loss of sync/raster/sound. Display goes off. (NORDMENDE - 7510 information)
• Voltages from FBT gradually decrease then line BU S2000 blows after operating for 15 mins.
• No picture. No sound. Programs can also be switched over.
• Starts up after 3 mins.
• Is it possible to fit a TEA 2026C in place of a TEA 2026T ? (7510 tips)
• Programmes memory is lost once a month.
• Lacks horizontal amplitude. Regulation does not function.
• No transmission in UHF (12V on pin 10 of the tuner connector).
• R82 (10R) on the tube base board fails.
• When appliance is switched on mains BU fails immediately.
• The power supply does not start up. All transistors have been changed.
• TP32 (BU508) becomes defective after appliance turned ON/OFF several times. (part of circuit diagram displayed)
• Power supply breakdown due to a volt-rise of the power supply kit.
• No functions. Standby LED is not visible.
• Unstable lines and there is an interference line at the base of TP32.
• Poor picture alignment.
• U1 is instead of 84-90V only approx. 60V. Current consumption is over 100W.
• Picture is dark. When Ug2 is completely there, a bit of the picture is present.
• Contrast average value is too high.
• Vertical deflection has collapsed to a bright line in the middle of the screen.
• Switches to protection mode. after start-up. (with circuit diagram extract)
• PSU repair tip.
• Intermittent loss of sync. Blank raster. No audio. No LEDs.
• Does not memorise channel tuning. Display shows channel when TV tunes onto a programme. 'Ch' appears on display when pressing 'S' and channel number reappears.
• Crackling in sound and picture in UHF and VHF. No sound in scart.
• Line BU (BU508) becomes hot and blows. At base of BU there are double pulses.
• Horizontal collapse.
• TL54/TP32 are destroyed. (7510 tip from NORDMENDE)
• No horizontal deflection. (service info for NORDMENDE -7510)
• When switching into standby mode from the remote control the appliance switches off the sound and colour. This effect also occurs with a Condor appliance.
• The picture blows up and the bottom of the screen is bright.
• No high channels can be requested.
• Bright picture. at top and bottom.
• No videotext mode.
• The power supply does not start up. No standby (service info for NORDMENDE -7510)
• Channels below 30 cannot be received (chassis ICC4).
• Contrast and brightness cannot be adjusted properly. (picture attached)
• No colour.Flag-effect.
• Reduced vertical size.
• Appliance goes into PAL. Occasionally no display.
• Flyback lines. No brightness. No contrast.
• Power supply stops occasionally, approx after 1/2 hour (very irregular).
• Rainbow effect in the centre.
• Power supply fault.
• After a few days the TV fails. RP11, TP32 and TP38 are defective. The 925TX1283 unit has been replaced: TP32, TP38, CV16, DP33, DP41, DL62, DL64, QL11, CP31, DP32, DP38.
• PAL run time decoder adjustment - PAL decoder.
• No function, standby point is not visible.
• No scanning. Display ok.
• Distorted picture. Strong streaking.
• Shade appears behind the picture.
• No reception on band I, or only picture flickering. (7510 tip from NORDMENDE)
• The appliance goes to safety mode and mute.
• Focus pot is defective. (NORDMENDE - 7510 information)
• No command signal on the IL03.
• Image noise in upper channels (e.g. channel 60, 99) only. (picture attached)
• No erasing possible.
• Vertical line.
• PSU does not always start after switch on via front control or RC.
• Loud audio.
• Switches to standby (intermittently).
• Channel storage is erased.
• Channels from 21 to 32 come through well but with lines and nothing comes through from 41 to 53.
• Coloured tinge in picture.
• Picture spraying on band I (heat dependent at DP51). (+ extract of circuit diagram)
• Black picture with 10cm of RGB horizontal lines over the whole screen.
• No picture. after a few minutes. Audio OK .
• Poor line synchronisation. Picture is shifted up. (+ extract of circuit diagram)
• Sound is always at max even if appliance displays volume with 00.
• Fuse blows at random, even at switch off.
• The appliance pulsates 3 times then goes to safety mode. (7510 tips)
• Approx one third of the top of the picture is crushed.
• Vertical blue bar on centre of screen. No picture. (7510 tip from NORDMENDE)
• Negative picture. Distorted picture. OK via SCART .
• The picture shifts towards the bottom of the screen.
• Power supply BU S2000 (BU508AT, BU508AF) S/C.
• The line framing is incorrect.
• Picture appears slowly.
• No picture in UHF, voltage for band change and tuning is OK.
• Switches to standby. after a few minutes. (7510 tips)
• Slow start-up.
• Interference lines in the top part of the screen.
• Excessive vertical size.
• The power supply does not function with load.
• The fuse blows because RP02 heats up.
• Does not start up. Standby LED switches off.
• No U system.
• TEA 2026C is defective.
• No start-up. (+ extract of circuit diagram) (service info for NORDMENDE -7510)
• No search possible. TV switches off without the 10th, 20th and 30th channel.
• Power supply fails at less than 100V.
• Line stage does not start up.
• White, bright picture, picture poorly distinguishable.
• TP29 fails after start-up.
• Does not come on from standby, red standby light comes on. TV01 and TV02 in the protective circuit respond.
• Display ok, 90V, 13V and 22V are ok. Output 10 of TEA2026 to the line driver and the wave peaks are not in the correct frequency. IC and quartz have been changed.
• No start-up. Display OK .
• The varicap voltage does not move.
• Poor display.
• TL54 (BU807) becomes very hot after a few mins and blows. Normal picture.
• No brightness on picture. Chroma present with vertical instability and no sound.
• Normal in black and white. In chroma, red of picture is green, blue is red and green is blue. (7510 tip from NORDMENDE)
• Both vertical and horizontal synchronization instability.
• The display is incorrect and PE appears.
• Vertical centre adjustment. (7510 tip from NORDMENDE)
• Horizontal centre adjustment.
• Black band on one part of the screen and interference.
• Sound purrs when tuning, picture is correct. Sound is possibly correct but picture disappears.
• Starts to pulsates. Sound, picture and display present.
• Muted audio.
• Sound and picture cut out, display for 30 secs.
• No vertical deflection. intermittently. No audio. intermittently.
• No start up. PSU whistles even when secondary side disconnected.
• Does not start up when cold. Audio , display OK.
• Too much contrast, cannot be adjusted to less. (part of circuit diagram displayed)
• TP01 (BUT12A) fails after longer operating time
• General information.
• TP29 fails after switch on.
• The appliance takes 2-3 minutes to start up.
• No video or scanning. Channels are displayed.
• No colour (intermittently). Line tearing.
• Purity spot and scanning are incorrect.
• No UHF channels.
• Horizontal deflection and line oscillator failed. (picture attached)
• No sensitivity in the tuning.
• At switch on when cold picture is reduced in height and width of the screen. After heating up for some time scanning becomes normal. Fault is no longer visible. You must wait until TV has cooled down sufficiently.
• S/C in PSU. (+ extract of circuit diagram) (NORDMENDE - 7510 information)
• BU807 blows regularly. FBT and TEA2026 have been changed.
• No colour. No shutdown with RC.
• Screen blank. Dark picture.
• Displays PR and does not start
• Adjustment of 5.5MHz min. or 4.43MHz min. (service info for NORDMENDE -7510)
• Wide dark stripes on left side of picture. (NORDMENDE - 7510 information)
• Transistor BU508 fails repeatedly.
• No picture. Fusible resistor RP47 (0R22) in U2 13V-rail blows repeatedly.
• The appliance crackles and the picture framing is incorrect.
• Reduced horizontal size. (part of circuit diagram displayed)
• Picture predominantly red in SECAM. Ok in PAL via scart.
• The appliance switches off for a short time and back on again. (picture attached) (NORDMENDE - 7510 information)
• Power supply fault. TP37 and TP32 have a short circuit and occasionally TP38.
• Black band at bottom of screen over approx 8cm. Picture has shifted to the top.
• Intermittent loss of sync, a blank raster, no sound, switching to standby and the LED channel display going off.
• No function display. CTV functions via the front panel and the RCU.
• Standby light flashes, fuse blows. RP11 and TP32, BU508 fails.
• Vertical lines on edge in EE-mode and via AV.
• No start up or reset.
• TL19 fails in line output stage.
• Snow, no voltage on Varicap.
• Switches to protection mode.
• Goes into standby every quarter of an hour or half an hour. (7510 tips)
• Adjusting the screen grid voltage (grey setting).
• RP61 burns out.
• Coloured flyback lines and poor picture.
• When warm picture lifts from the bottom and narrows at the top, black lines at the bottom of the screen.
• Tripping.
• Blank screen.
• Fuse blows as soon as degaussing is connected.
• The luminance signal disappears occasionally.
• Dead.
• RP02 and power supply BU blow.
• Top part of the picture is too wide and bottom part is too narrow
• Image compressed horizontally. Insufficient width approx 1cm on left and right of screen.
• The power supply is destroyed.
• RP51 (0R22) blows intermittently.
• 90V problem. RP51 heats up and cuts out. DP51 and CP51 ok. Brand new line transformer.
• Picture shifted vertically.
• Unstable luminance when the appliance is warm.
• Picture is pulled at the top. Poor line sync. (+ extract of circuit diagram)
• U1 = 60V instead of 90V.
• Power supply defective.
• At start up no line scanning or raster, TV displays PR. After approx 30 mins TV starts up.
• RL41 O/C due to dry joints below connector BD01.
• No image, red raster and flyback lines visible. (with circuit diagram extract)
• The PSU fails instantly. When this is replaced by the repair kit the same problem arises.
• Screen blank, only RF-noise. No 0,5-30V tuning voltage at RT11. The three band switch transistors are conductive. Error may also occur only sometimes.
• Low audio.
• Line instability.
• FBT ok at start up but dark screen except for 3 coloured lines in top third of screen. Sound and display of channels ok.
• Stations appear and disappear. Horizontal lines in picture.
• Switches to standby. after a while.
• Ghosting effect.
• Poor vertical synchronisation. Picture shifted vertically. at top. (picture attached) (service info for NORDMENDE -7510)
• No vertical deflection. (7510 NORDMENDE repair tip)
• Dark picture. after a few minutes. (7510 NORDMENDE repair tip)
• No RC functions.
• Vertical lines are distorted horizontally. E/W equalizer can not be adjusted correctly.
• Only switches on occasionally, but without picture and sound. Occasionally very high switch on current consumption.
• Focus adjustment.
• No display. Appliance starts.
• Mains switch no start up. (+ extract of circuit diagram)
• No picture content, rainbow colours at upper edge. U4 (17,5V) is too high, voltage at thyristor anode too high (approx 30V). At pin 4 of IC03 (TEA2026C) voltage is too high, instead of (2,8V approx. 7V).
• Replacement kit of thyristor ESM740/G1/G2.
• PSU does not start up with a mains voltage more than 200V, ok with a voltage less than or equal to 200V.
• E/W fault.
• Tuning voltage drifts.
• Fails frequently when operating.
• TP32 heats up.
• On start up, black interference lines appear then the screen is white.
• Standby LED flashes.
• Vertical collapse (intermittently).
• When warm flickers between picture and TXT. Characters keep popping up on screen
• Can not be switched on from standby via RC.
• 300V on the collector of TP32. Oscillates at its base but no voltage on the secondary.
• RP11 blows.
• No colour, picture streaking.
• The appliance hums and the picture is unstable.
• Noisy sound or no sound at all.
• Switches to protection mode. intermittently.
• No start up. PSU blocked.
• On channels from 21 to 27 picture is ok, from 32 to 35 lines on picture and from 41 to 47 no picture.
• Picture flickers and stripes in the picture.
• Vertical bar.
• Contrast and colour are excessive at preset condition.
• Picture hum and picture is slightly brighter at the top and bottom. (extract of circuit diagram attached)
• No start-up. No display.
• Power supply kit has been changed, has been working for 2 days and TP32 s/c, RP11 o/c, TL54 s/c, DL66 s/c, etc. Everything has been replaced, then no U1, U2, U3, U7, power supply transformer OK.
• Line output stage doesn't start up.
• No picture or sound. At switch on display indicates a channel but no control is possible.
• Phase comparator fault on TV. Ok on secondary.
• No brightness (only outlines can be recognised). Colour is ok.
• The appliance crackles during low Gamme UHF.
• No TXT.
• Dark screen. on the left.
• No start-up (intermittently). (picture attached)
• U7 = 15V and there is no 12V voltage. A black band appears on the screen. (7510 tip from NORDMENDE)
• No speacial channels. Appliance works only up to channel 69. Display for brightness shows L (= English mode) instead of B.
• Reluctant to start then produces a picture with reduced width.
• Power supply fuse blows. When it has been replaced, TV functions again for several days.
• Does not start up. Only displays the channel number. Power supply kit has been replaced.
• BU807 (TL54) cuts out.
• Picture drop out and development of smoke. A "rainbow" is visible in the picture.
• Switches off intermittently or does not switch on at all.
• No secondary voltage.
• Horizontal deflection is missing. Protective circuit disconnects. Standby point flashes.
• Dark screen, 5 or 6 coloured lines at the top of the screen. Picture returns if appliance is hit.
• Noise on channel 09 (band I) - colour picture. (part of circuit diagram displayed)
• DP51 s/c after operating for half an hour.
• No start-up from standby with RC.
• Crackling in sound and picture in UHF and VHF. No sound via scart.
• The channels unkey after a while.
• After switching on the mains progamme indication in the display but no picture and no sound. (picture attached)
• No reception at band I, or image flickering only. (part of circuit diagram displayed)
• Line oscillating or tearing.
• Vertical picture position shifts intermittently upwards approx 2 cm after switch on. It is OK after approx 10 mins.
• Vertical foldover at bottom.
• Power supply, fuses, BUs, etc, blow each time appliance is switched off by ON/OFF switch.
• Start up ok. Picture and sound ok. After 15 minutes or more than one hour no picture but son ok. Horizontal white line.
• The colour appears after a few minutes.
• PSU inoperative.
• High contrast.
• No picture. Sound and display are OK.
• The sound and picture hum.
• Black screen. Display is lit. Intermittent sound. Fault occurs both via aerial and SCART.
• No picture. Flyback lines. at top. Audio OK .
• Poor contacts.
• After switch on, vertical centering is shifted intermittently upwards approx. 2 cm; it goes to normal position after approx. 10 minutes.
• PSU fails after start-up.
• Poor reception. in VHF.
• Adjusting the white setting.
• Setting the vertical amplitude.
• Excessive green.
• Low hum of vertical lines. (part of circuit diagram displayed)
• No reception. via tuner.
• In normal charge, TP32 and TP38 switch off. The appliance functions without a charge.
• The appliance blows up on a very light background.
• No display. TV functions well. Channel change over ok. (7510 tip from NORDMENDE)
• Volume varies.
• The picture is blurred (spot at the bottom of the screen).
• No light and the appliance cuts out.
• When cold, no sound and no line amplitude then finally starts up.
• Picture is bright and white with flyback lines. (+ extract of circuit diagram)
• TL19 fails in line ouptut stage.
• Switches to standby after 6 or 7 minutes with or without aerial signal.
• Picture flickers slightly from bottom to top. After removing display indication (control unit) picture is ok (less current). (extract of circuit diagram attached) (7510 tips)
• Line stage does not start up. (7510 tip from NORDMENDE)
• The blue circuit is pale.
• No luminance.
• Standby flickers.
• Reference oscillator beat adjustment: PAL decoder.
• Sound to zero level. When volume is increased, sound goes back to zero level. Random channel switch-over.
• Spots of colour on the screen.
• Secondary protective circuit TV01 and TV02 disconnects intermittently.
• Horizontal stripe (intermittently).
• No vertical synchronisation. (service info for NORDMENDE -7510)
• After changing the battery, how do you adjust the channels without remote control IR?
• TP32 fails at switch on. (extract of circuit diagram attached)
• Vertical lines at edge during EE operation and via AV. (part of circuit diagram displayed)
• Snow in picture. in UHF.
• Vertical IC blows repeatedly after a few days.
• No picture, no sound and programme display does not light up.
• Picture too small. at start-up.
• DP51 heats up.
• Excessive brightness.
• PSU fails immediately after switch on.
• Vertical line. in the centre.
• Dark screen.
• Tube lights up as if G2 is at max (as if blocked in video). The same if an oscilloscope is put into scart. Sound and scanning ok.
• Cannot be switched on or switched to standby. Standby indicator does not light up.
• No horizontal deflection. intermittently.
• The 108V voltage varies (U-system).
• No system adjustment.
• Display appears after 15 secs, then pulsates on and off (no breaker circuit). (+ extract of circuit diagram) (service info for NORDMENDE -7510)
• No functions. (part of circuit diagram displayed)
• Station tuning disappears.
• Picture appears slowly. Display OK .
• U Varicap = 20V and will not change.
• No picture. No audio. No channel display.
• Poor vertical and horizontal amplitude with slight waving at sides, when cold. Everything returns to normal within 5 mins.
• Hesitant start up. Mains button must be pressed several times. If appliance runs, fails again most of the time after a few mins.
• Slight hum of vertical bars.
• No brightness. Three RGB colour bands on left and right of the screen.
• No channel search.
• Adjusting Us= 108V.
• Standby indicator flashes.
• No horizontal or vertical deflection.
• No start function via RC. With mains switch appliance switches into standby. (picture attached)
• IL03 (TEA2026) blows up when the appliance goes into AV on TV 42cm.
• When switching on BU508A and RP11 fail after 2 secs.
• Does not switch on. No standby.
• IR receiver does not function.
• TP32 (BU508) and TL37 (BU508) fail immediately after switch on. (with circuit diagram extract)
• No picture. Vertical coloured lines. Raster problem.
• Volume uncontrollable.
• No start up. can be switched on after some time in standby. Sound OK. (service info for NORDMENDE -7510)
• No 300V at collector of TP32. If collector is disconnected 300V appear.
• The power supply is correct without a load (U1 is up). There is a complete stop in the load. (service info for NORDMENDE -7510)
• RP23 and transistor (BU508A) have blown. (7510 tips)
• Systematic failure of TL54. At switch on TEA2026 has been changed. (7510 NORDMENDE repair tip)
• Deprogrammes approx every 4 to 5 months.
• RP02 burns at switch on and destroys TP32 S2000A1.
• There are 1300V present instead of 900V peak to peak on the collector of the TL37 (BU508ATB). This breaks after some time.
• Very snowy picture in UHF. Apparently the fault is at the level of the tuner UHF 4200.
• PSU is defective, after replacing the protection resistor RP11 and transistor TP32 (BU508) there is still a s/c ie. after switching on appliance there is another complete s/c of the BU 508A straight away.
• No picture on channel 99. (7510 NORDMENDE repair tip)
• TP32 in the PSU is s/c.
• Switched-mode power supply (SMPS) does not start up. (picture attached)
• Fuse blows constantly. (7510 NORDMENDE repair tip)
• Secondary protective circuits TV01 and TV02 disconnect intermittently.
• No 90V, RP51 burns. BU807, BU508.
• Only switches on after 70 secs. After start up everything is ok.
• The linearity coil whistles.
• S2000 is s/c. Replaced with the original repair set, it still fails. (extract of circuit diagram attached)
• No adjustment.
• Faint blue picture with no picture content and flyback lines. (with circuit diagram extract)
• Appliance does not function with the mains switch then starts up again with another button.
• Picture width fault.
• No picture, no sound - PSU is switched off.
• Vertical amplitude is too low.
• No image content, only HF noise. (+ extract of circuit diagram)
• No switch on. Standby indicator lights up.
• Standard CCETT adaptation.
• Insufficient picture width, poor lines visible on screen
• Searches for channels continuously.
• No tuning.
• TP32 and TP38 have a short circuit.
• The picture is delayed by a few minutes.
• Poor startup.
• Poor vertical synchronisation.
• No picture. Check the signal on pin 10 of IT20.
• Intermittent loss of synchronization. (service info for NORDMENDE -7510)