704027 / OTTOVERSAND [TV]

• No colours at start up 50% of the time on satellite channels. OK in HF and VCR. (picture attached)
• Protection mode activated.
• When cold, picture takes approx 2.5 mins to appear instead of 15 secs. When warm it takes 20 secs. (part of circuit diagram displayed)
• Difficult to set up east/west and width controls. (+ extract of circuit diagram)
• Doesn't switch into standby. Green LED goes orange and flashes after pressing standby key . (OTTOVERSAND - 704027 information)
• Intermittent black picture with TXT. Intermittent TXT in picture. (704027 tips)
• The line transistor blows after 5 minutes. (with circuit diagram extract) (OTTOVERSAND - 704027 information)
• E/W fault. No E/W correction. (part of circuit diagram displayed)
• Defective line transistor. (with circuit diagram extract)
• After approx 20 mins operating time appliance switches off. Then no Led. When you switch off completely with the mains switch and wait a time appliance starts again when you switch on. (704027 OTTOVERSAND repair tip)
• F4 displayed. LED flashes green then orange for slightly less than a sec. (with circuit diagram extract)
• Error codes. (+ extract of circuit diagram)
• Cramped at bottom with slight foldover.
• Poor vertical linearity. Reduced vertical deflection. (extract of circuit diagram attached)
• No 9V. (picture attached) (704027 OTTOVERSAND repair tip)
• Vertical foldover at top and bottom. (part of circuit diagram displayed)
• No blue. (with circuit diagram extract)
• Crackling from FBT and black vertical bars on screen for a few secs after start up. (extract of circuit diagram attached)
• In VCR there are only chroma lines. (part of circuit diagram displayed)
• No picture, no sound. TV starts up and tube lights up. (extract of circuit diagram attached)
• Slight E/W distortion. (with circuit diagram extract)
• No start-up from standby with RC.
• On channels 2 and 4 vertical lines on the left hand side of the picture.
• Tuning drifts. after a while. (704027 tips)
• Switches off during operation. When it is switched on again crackling is heard from HT. (+ extract of circuit diagram)
• No colour. (part of circuit diagram displayed)
• Faulty TXT. (part of circuit diagram displayed)
• No light lit. (with circuit diagram extract)
• No sound or vision with F1 showing in the display.
• In standby tries to operate spontaneously. (picture attached)
• Smoke from +12V resistor. (extract of circuit diagram attached)
• Chopper transistor failure. (extract of circuit diagram attached)
• Searches for channels continuously. (with circuit diagram extract)
• Power supply problem. (picture attached)
• Replacement of TDA8451 (IC7305). (extract of circuit diagram attached)
• S/C in line output stage (7645). (part of circuit diagram displayed)
• Oval picture. (704027 OTTOVERSAND repair tip)
• Poor NICAM sound from left hand speaker.
• No audio. (with circuit diagram extract)
• Secondary voltage cannot be adjusted lower than 160V. PSU however can be regulated with this voltage.
• Beam current dependent picture width fault. (picture attached)
• BUT18 fails repeatedly. (part of circuit diagram displayed)
• Set not regulating after SOPS re-build of secondary side of PSU. (part of circuit diagram displayed)
• No picture, no sound, no display, 148V is reduced to approx 50V.
• T7637 blown. (+ extract of circuit diagram)
• Problems with flof TXT. Cannot find p.811 in spite of it being sent out. TXT header remains with subtitling. (picture attached)
• No regulation. (part of circuit diagram displayed)
• Does not store settings. (with circuit diagram extract)
• Defective BUT.
• BUT18AF fails repeatedly. (with circuit diagram extract)
• Weak contrast. No contrast control. (704027 tips)
• No picture. No brightness. No sound. Picture tube filament on.
• Functions with an automatic transformer up to 110, 120V. (with circuit diagram extract)
• Over oscillations below collector BUT18. (part of circuit diagram displayed)
• The front control panel changes channels upwards but not downwards. All other functions OK.
• Purity fault. (part of circuit diagram displayed)
• BU508 blows after 1 or 2 days. (extract of circuit diagram attached)
• Intermittent memory problem.
• Line tearing and picture twitching at the sides of the picture. (704027 OTTOVERSAND repair tip)
• Local dooming. (extract of circuit diagram attached)
• Vertical collapse. (with circuit diagram extract)
• Horizontal end stage BU508AF short circuits after different playing times. (picture attached)
• White screen.
• EXT1 switchover is defective, terrestrial program remains.
• The sound fails: after changing over to a different channel, the sound is back. (extract of circuit diagram attached)
• Goes to blank screen with unlocked TXT lines when TXT selected.
• No reset.
• Spare part info: Value of C2546 and C2545 near line output transformer.
• No audio. F2 error.
• Interference in picture. No picture. No audio. (with circuit diagram extract)
• Value of 3525 in the vertical amplifier situated in front of the line transformer towards tube 4 beside cushion 3521.
• Buzzing from PSU. in standby. (part of circuit diagram displayed)
• No start-up. (picture attached)
• Vertical lines. on the left. Excessive brightness. (+ extract of circuit diagram)
• Horizontal line. Audio OK . (picture attached)
• Local dooming, especially with high contrast. (with circuit diagram extract)
• Top of text is ringing. Intermittent text.
• No picture. Grey screen. Brightness control works normally. (extract of circuit diagram attached)
• End stage transistor BU508 fails repeatedly at switch on. (with circuit diagram extract)
• No tuning.
• Very loud sound at switch but normal at previous switch off. Adjustment OK.
• Displays error code F4. When you switch to standby again, F4 appears again. LED flashes. Only noise. (part of circuit diagram displayed)
• Chopper transistor (BUT18AF) fails if appliance is switched on from standby. (picture attached)
• Blank raster. No tuning.
• Line BU keeps failing. (picture attached)
• Works correctly but power supply BUT11 blows after 3 weeks. (with circuit diagram extract)
• Thyristor TR7670 breaks down after two days (loose contacts). (extract of circuit diagram attached)
• Shuts down. LED is green. (+ extract of circuit diagram)
• No picture. when cold. Audio OK . (part of circuit diagram displayed)
• Red flashing when changing channels with VCR playback in the still, search modes or edit points in own recordings. (part of circuit diagram displayed)
• East/west raster distortion: width and shaping control do not function.
• Connection of the loop system to the TV.
• Poor linearity. (part of circuit diagram displayed)
• 100V power supply is approx 35V. (+ extract of circuit diagram)
• When switching on, HV part hums. No control function is possible. (with circuit diagram extract)
• No quick start pulse. (with circuit diagram extract)
• Dark picture. Picture rolls. Picture shifted to the left. Flickering picture. (extract of circuit diagram attached)
• BUT18 blows at 100V on the variac.
• Appliance works fine for hours, but after switching off with the remote control the BUT18 and mains fuse go defective. (+ extract of circuit diagram)
• No control signal to IC7470 (TDA) and no line scanning. (+ extract of circuit diagram)
• Ragged picture.
• No horizontal deflection. (with circuit diagram extract)
• Stop via RC, no red dot. No start up by pressing simultaneously on the switch and programme of the RC. On the contrary, stop and switch on via the switch functions. (extract of circuit diagram attached)
• Reduced raster size. (with circuit diagram extract)
• PSU blocking. (with circuit diagram extract)
• Dark picture.
• Dark screen and bright bar at the top. Clock is strange. Sound present. (+ extract of circuit diagram)
• Sound and picture pulsating (2 times a sec) only via tuner.
• White square in a corner of the screen. (extract of circuit diagram attached)
• Dark picture. at bottom. Stretched picture. at top. (extract of circuit diagram attached)
• No functions. LED lit. . (extract of circuit diagram attached)
• Horizontal-BU 508AF has a s/c. After replacing this fails again after a few seconds. (+ extract of circuit diagram)
• Ballooning and incorrect picture linearity.
• When switching on the appliance when it's cold, it takes about 35 seconds before the picture appears. (extract of circuit diagram attached)
• Lines on picture and sections blanked out. No TXT. (part of circuit diagram displayed)
• BU508 defective after switching channel (when appliance is warm). (extract of circuit diagram attached)
• No raster. (+ extract of circuit diagram)
• Slow start-up. Audio OK . (with circuit diagram extract)
• No or poor synchronisation.
• Horizontal white line. (+ extract of circuit diagram) (OTTOVERSAND - 704027 information)
• Only grey picture after being struck by lightning. TXT also runs. (+ extract of circuit diagram)
• No start-up. intermittently. (part of circuit diagram displayed)
• Colour flickering during video editing.
• No colour in French standard. (part of circuit diagram displayed)
• Picture jitters and vertical bars distorted on cross-hatched pattern. Blue horizontal bars. (part of circuit diagram displayed)
• BUT18AF is defective and is destroyed when appliance is switched on. (picture attached)
• Thyristor pos. 6670 fails. (picture attached)
• Error message F7 appears in the first 2 mins. No operation possible. (extract of circuit diagram attached)
• Picture varies with beam current. (with circuit diagram extract) (704027 tips)
• Line output transistor fails repeatedly. (+ extract of circuit diagram)
• No sound or picture. Appliance appears to be in AV. (part of circuit diagram displayed)
• Red LED blinking for 3 secs.
• OSD partly disappeared from the screen in BL sets. (part of circuit diagram displayed)
• No tuner reception. Search display functions well but appliance does not pick up any channel. (extract of circuit diagram attached)
• HT varies intermittently.
• Page 811 appears spontaneously. (+ extract of circuit diagram)
• Channels run through. (+ extract of circuit diagram)
• S/C on deflection circuit. (+ extract of circuit diagram)
• Fuse, bridge rectifier and BUT11 in PSU blow when in standby for 10 mins. (extract of circuit diagram attached)
• Vertical foldover. (with circuit diagram extract)
• Phase fault. (part of circuit diagram displayed)
• Picture collapses. Pincushion distortion. (part of circuit diagram displayed)
• Channel change impossible after a moment. Channel remains displayed and front LED becomes orange. (with circuit diagram extract)
• Line transistor 7545 fails after approx. 3 secs. (extract of circuit diagram attached)
• Brightness differences in picture. (with circuit diagram extract)
• 185V instead of 148V. When taking a measurement on collector of TZ 7652, bulb goes off. (extract of circuit diagram attached)
• No sound when input connection made via 2 S-VHS phono sockets.
• R3368 and R3369 burn up at switch on. (extract of circuit diagram attached)
• Repeated failure of CRT.
• Intermittently BUT18 defective after switching on. (with circuit diagram extract)
• Blows chopper transistor. (part of circuit diagram displayed)
• Snow in picture. (part of circuit diagram displayed) (704027 OTTOVERSAND repair tip)
• Ticking sound. (part of circuit diagram displayed)
• No switch on. Noise from loud-speakers and smell of burning. (+ extract of circuit diagram)
• References for transistors 7615 and 7612.
• Green LED does not light up. Power supply oscillates. (extract of circuit diagram attached)
• PSU chirps. (+ extract of circuit diagram)
• No picture or narrow streak after warm-up. (extract of circuit diagram attached) (OTTOVERSAND - 704027 information)
• Defective SOPS. (+ extract of circuit diagram)
• Dark screen. via tuner. Audio and OSD OK . (picture attached) (service info for OTTOVERSAND -704027)
• No channels.
• No luminance. (part of circuit diagram displayed)
• Buzz in audio. (+ extract of circuit diagram)
• Shuts down. after a few minutes. (+ extract of circuit diagram)
• Picture width changes according to its content. Linear distortion on right and left sides over 5cm (no ondulation).
• Line pairing at top half of the picture (extract of circuit diagram attached)
• Stretched picture. at top. Reduced raster size. at bottom. (+ extract of circuit diagram)
• Defective standby thyristor (SFOR5D43). (extract of circuit diagram attached)
• Poor regulation. (picture attached)
• BU508, Q7593 and Q7594 are defective. (extract of circuit diagram attached)
• Intermittent power supply shut down, the picture goes off for a split second, the display flickering in sympathy.
• PSU varies according to picture content when warm. (picture attached)
• Picture green and purple in the E/W direction.
• No colour in SECAM and PAL. Colour may appear slightly in SECAM when warm. (part of circuit diagram displayed)
• Horizontal stripe. intermittently. (+ extract of circuit diagram) (704027 tip from OTTOVERSAND)
• Local dooming / PP-settings. (extract of circuit diagram attached)
• Vertical bar. on the left. (extract of circuit diagram attached)
• Colour bar at right of screen. (picture attached)
• Dark screen. No picture. No RC functions. (extract of circuit diagram attached)
• No brightness. No audio. Raster OK . (part of circuit diagram displayed)
• LED lights up for a moment. TV is dead. Light on the power supply sometimes functions. (picture attached) (service info for OTTOVERSAND -704027)
• Single dark lines in picture centre.
• Set will go off after a period that varied from ten minutes to five hours. It will then stay off,coming back on again after a similarly indeterminate period.
• Connection of a loop system to the TV.
• Videotext has turbulent text content in upper section. (OTTOVERSAND - 704027 information)
• No sound. No response to commands from both RC and front panel. Error message F2 on screen. Picture ok. (part of circuit diagram displayed)
• Control micro processors.
• TXT problem. Some characters do not display.
• Appliance starts intermittently with no standby. (+ extract of circuit diagram)
• White screen. Flyback lines. Shuts down. after a few seconds. (extract of circuit diagram attached)
• Poor vertical linearity. Horizontal size varies. (part of circuit diagram displayed)
• Blows components. after a few minutes. (extract of circuit diagram attached)
• Trapezoid picture. No E/W correction.
• Low picture amplitude. Barrell-shaped picture. (extract of circuit diagram attached)
• Nasal sound on channels 5 and 6. (picture attached)
• Vertical shaking. (+ extract of circuit diagram)
• PSU transistor (BUT18A) becomes defective right after start-up.
• No function. Buzzing noise. (picture attached)
• Tuning search does not stop when appliance has found a station. (extract of circuit diagram attached)
• No OSD. intermittently. (picture attached)
• Switching transistor in power supply goes short circuit (BUT18).
• Sound is noisy.
• SOPS power supply repeatedly becomes defective. (picture attached)
• No TXT. Intermittent green dots or lines through picture. Black screen.
• Colour blobs in the picture.
• Mono/stereo display error. (with circuit diagram extract)
• Chopper transistor (BUT18AF), rectifier diodes and mains fuse become defective instantly. (extract of circuit diagram attached)
• Incorrect reception. 33V ok. Picture ok in scart.
• No functions. intermittently. LED blinks . Shuts down. (part of circuit diagram displayed)
• Crackle a few seconds after Power On. (extract of circuit diagram attached)
• Flickering text and apparent tuning drift.
• No synchronisation. intermittently. (with circuit diagram extract)
• Line output transistor fails repeatedly. intermittently. (part of circuit diagram displayed)
• No picture. No audio. OK via SCART . (extract of circuit diagram attached) (704027 OTTOVERSAND repair tip)
• No TXT, just lines on screen. (704027 tip from OTTOVERSAND)
• Vertical synchronisation fault when hot and presence of white line, then picture disappears (part of circuit diagram displayed)
• No picture, only audio via SCART. "Off air" picture displayed.. (+ extract of circuit diagram)
• Set dead, power supply refuses to start. Also intermittent start and no standby (extract of circuit diagram attached)
• No horizontal synchronisation. intermittently. (+ extract of circuit diagram)
• Dead. Red LED blinks. (+ extract of circuit diagram)
• Line transformer noise. (with circuit diagram extract)
• Dark picture. Audio OK . (part of circuit diagram displayed)
• Poor width regulation with brightness. (picture attached)
• Switching transistor of the SOPS power supply is defective. (picture attached)
• No picture. when cold. (with circuit diagram extract)
• Appliance only functions until the 120V is reached with the variac. When the mains voltage is increased the appliance fails. (part of circuit diagram displayed)
• Fails occasionally.
• TV starts, has raster but no image and no sound. Display shows "FO". (extract of circuit diagram attached)
• Line output transformer failure.
• Horizontal output stage fails again after some time. (+ extract of circuit diagram)
• 5.1V incorrect. (part of circuit diagram displayed)
• Line BU blows after a moment. (+ extract of circuit diagram)
• Power supply is often destroyed when left in standby. (part of circuit diagram displayed)
• BUT11 becomes defective after 3 days of use. (+ extract of circuit diagram) (704027 tip from OTTOVERSAND)
• 148=68V. (+ extract of circuit diagram)
• Line output transistor defective. (with circuit diagram extract) (704027 OTTOVERSAND repair tip)
• No E/W correction. Pincushion distortion. (part of circuit diagram displayed) (OTTOVERSAND - 704027 information)
• Switches to protection mode. (+ extract of circuit diagram)
• Poor audio. only on certain channels. Crackling audio.
• Excessive vertical size. (with circuit diagram extract)
• Only pulsates once. Resistor R3661 in the 5V rail is burnt. (service info for OTTOVERSAND -704027)
• No functions. Power LED lit . (extract of circuit diagram attached)
• Frizzy lines on the picture.
• Unstable AFC. Noisy picture. (+ extract of circuit diagram)
• Line transistor S/C.
• No picture. F4 lights up in the display. (part of circuit diagram displayed)
• Ragged verticals.
• No PAL chroma. (704027 OTTOVERSAND repair tip)
• Dark screen. LED is green. (part of circuit diagram displayed)
• Switches immediately to protection mode. Functions OK when protection mode is switched off. (+ extract of circuit diagram) (service info for OTTOVERSAND -704027)
• Black screen. Audio OK . (part of circuit diagram displayed)
• Excessive horizontal size. Picture size varies with picture content. (extract of circuit diagram attached)
• In Standby BUT18AF (T7625) becomes defective.
• Intermittently blown Wickman fuse 1534. (704027 tip from OTTOVERSAND)
• Power supply is low when warm. (+ extract of circuit diagram)
• Protection of T7625 (BUT18AF). (with circuit diagram extract)
• Tripping. intermittently.
• Vertical foldover at bottom. (part of circuit diagram displayed)
• Blurry picture.
• Very low secondary voltages. (picture attached)
• With Blackline picture tubes occasional or random OSD insertion.
• Poor picture. via tuner. (with circuit diagram extract)
• Intermittent colour.
• Coloured flash on channel change and VCR features. (extract of circuit diagram attached)
• Power supply falls to approx 40V AC on the variac. (+ extract of circuit diagram)
• No output voltage.
• Horizontal deflection BU fails after a few hours.
• Snow on screen and no reception. F4 displayed on screen. Green LED lit. (+ extract of circuit diagram)
• No vertical synchronisation. (+ extract of circuit diagram)
• Starts up again then clicks after a few mins. PSU faled again. (extract of circuit diagram attached)
• No TXT. (extract of circuit diagram attached)
• No linearity. (extract of circuit diagram attached)
• Picture takes some time to appear. Dark screen then TV stops. Round colour spot which slowly disappears. (+ extract of circuit diagram)
• No MONO audio. STEREO OK . (picture attached)
• Search stops with good tuning.
• Vertical foldover at top.
• Humming noise from transformer. Line output transistor fails repeatedly. (part of circuit diagram displayed)
• As the set warms up the picture flashes cyan every few seconds. (extract of circuit diagram attached)
• Squealing from PSU. after start-up. (picture attached)
• Hum in audio. in standby. (extract of circuit diagram attached)
• Line BU508blows after 3 days. (picture attached)
• Luminance takes a long time to appear. Distorted picture, focus pot does not react sufficiently. (extract of circuit diagram attached)
• Faded picture. No contrast. (picture attached)
• Takes approx 1 minute to come on, will not switch to standby, sound mutes but pulsating picture remains. (extract of circuit diagram attached)
• Transistor 7545 (BU508AF) is blown. (part of circuit diagram displayed)
• Blank screen. Audio OK .
• No picture. TXT OK . (with circuit diagram extract)
• When switched to standby U1 becomes 60V. PSU goes to limiting. (extract of circuit diagram attached) (704027 OTTOVERSAND repair tip)
• Black screen. No brightness. Audio OK . (extract of circuit diagram attached) (OTTOVERSAND - 704027 information)
• Dead. Error code F1 displayed. (service info for OTTOVERSAND -704027)
• TV locked by and keys.
• Jagged picture. (with circuit diagram extract)
• Severe crossover distortion in left channel.
• No picture. Audio OK . (picture attached)
• Start with interfering voltage. (picture attached)
• No start up. No front panel LED. Quiet noise from loud-speakers.
• One colour missing.
• No contrast control. (extract of circuit diagram attached)
• PCD8582 and X2402 memory. (part of circuit diagram displayed)
• The bottom half of the raster is missing, with the top cramped.
• Service mode
• Line end stage U/syst collapses to approx. 48V. (extract of circuit diagram attached) (704027 tips)
• No signal on the BUT11AF collector. (+ extract of circuit diagram)
• Finds emitters during channel search but does not stop. (picture attached)
• Excessive brightness. (part of circuit diagram displayed)
• Undefined Stereo-Mono switch over. (704027 OTTOVERSAND repair tip)
• BUT18, R3570 and F1534 blow. (with circuit diagram extract)
• Reduced horizontal size. intermittently.
• Loud noise. (part of circuit diagram displayed)
• The standby thyristor blows. (picture attached)
• Blows components. at start-up. (picture attached)
• Change in picture width depending on beam current. (picture attached)
• Set does not start-up after implementing SOPS kit. (part of circuit diagram displayed)
• Power supply too low (70V). (extract of circuit diagram attached)
• Picture pulsates on white background.
• BU508AF fails repeatedly. (extract of circuit diagram attached)
• High voltage unit is smouldered. (part of circuit diagram displayed)
• Wavy picture. via AV.
• No functions. intermittently.
• BUT18 and rectifier bridge blow every two days even after modifications.
• BUT11 in power supply defective after few days, or when in standby. (+ extract of circuit diagram)
• Blows chopper transistor when switching on with remote. (with circuit diagram extract)
• BUT18AF blows in standby on the collector. (extract of circuit diagram attached)
• POR signal too low. (picture attached)
• Adjustment black line matrix.
• Mains fuse O/C and BUT S/C. (picture attached)
• The horizontal centering cannot be adjusted correctly. It may have shifted after the appliance has warmed up.
• Reduced format, flyback line slightly visible. (picture attached)
• Green spot after viewing a white object on the screen.
• Shuts down. after a while. (extract of circuit diagram attached)
• Picture is too wide or too small when adjusting horizontal size.
• Dead. Humming noise from transformer. (with circuit diagram extract)
• HV capacitor burns. (extract of circuit diagram attached)
• Chopper and line output transistors S/C. (+ extract of circuit diagram) (704027 OTTOVERSAND repair tip)
• Distorted picture. at top. (extract of circuit diagram attached)
• Switches on for a few secs with extreme brightness. No picture. Sound OK. Goes into safety mode immediately after. (OTTOVERSAND - 704027 information)
• Dark screen. in TXT.
• Picture flickers intermittently, sound disappears. Picture reappears of itself, sound doesn't but can be activated with the RC.
• When switched off with RC, does not switch on again and LED remains off. (+ extract of circuit diagram)
• When warm, there is a raster fault on the left. (picture attached)
• Blows chopper transistor at switch on.
• Tuning search does not stop.
• Buzzing from PSU. Motorboating noise from speakers. in standby. (with circuit diagram extract)
• Appliance starts up with the variac until it reaches 100V and then the appliance fails. (with circuit diagram extract)
• No sound or picture. Snowy screen (picture with test signal). Vertical interference bars. (+ extract of circuit diagram)
• Picture and sound drop out. Appliance jumps to channel 1.
• Extra protection for chopper transistor TR7625 (BUT18AF). (extract of circuit diagram attached)
• No picture. intermittently. (with circuit diagram extract)
• The power supply BUT18AF shorts after operating for 5 hours. (with circuit diagram extract)
• Intermittent failure thyristor 6670 in STANDBY mode. (picture attached)
• Poor E/W adjustment. Picture is narrow in the middle. (part of circuit diagram displayed)
• Switches off intermittently. Standby LED (red-green) flashes. Picture drops out. (picture attached)
• PSU repeatedly blows up. (+ extract of circuit diagram)
• Negative picture when cold and sometimes intermittently. (+ extract of circuit diagram)
• The picture is indented (horizontally).
• Reduced horizontal size. after a while. (picture attached)
• Light green picture despite adjusting. Impossible to get red. (+ extract of circuit diagram)
• Line output transistor fails repeatedly. after a while. (+ extract of circuit diagram)
• No E/W correction. (with circuit diagram extract)
• Appliance runs ok, but if remote used to switch to standby, appliance goes dead. (+ extract of circuit diagram)
• Picture leans too much to one side, Black line visible in the picture. (picture attached) (704027 OTTOVERSAND repair tip)
• Undefined Stereo Mono switchover.
• Diode D6653 installation sops kit.
• Occasionally picture seems to be coded on all the channels especially when cold. (part of circuit diagram displayed)
• Character error. (OTTOVERSAND - 704027 information)
• 148V measures 60V. (+ extract of circuit diagram)
• Reduced vertical size. (with circuit diagram extract)
• No chopper power supply. (extract of circuit diagram attached)
• Vertical defective, too large line space in upper picture third. Linearity fault. (+ extract of circuit diagram)
• After about 3 to 4 weeks of regular play, the BUT18 and the main fuse automatically blow. (extract of circuit diagram attached)
• Modification: Colour decoder chip IC7260.
• No operation. (extract of circuit diagram attached)
• EHT problems. (+ extract of circuit diagram)
• Picture looks as if it were encoded (like on C+ channel). Sound is OK.
• Vertical stripes at left picture edge via channel 2 and 4. (extract of circuit diagram attached)
• Top of TXT waves from side to side. (picture attached)
• Picture fault in tuner and scart.
• Snow on screen and no tuner reception. F3 displayed on screen. Green LED on.
• Picture rolls. (picture attached)
• Power supply fuse (18A) defective after 1 hr or less. (with circuit diagram extract)
• No red, green and blue go through correctly. TEA5101A and TDA8390 have been changed. (+ extract of circuit diagram)
• Vertical collapse. after a few minutes. Audio OK .
• Arcing. Picture tearing. Does not synchronise. (extract of circuit diagram attached)
• White picture and no amplitude when cold. Picture pumping. (picture attached)
• No tuning. intermittently. (+ extract of circuit diagram)
• White picture on the right side in EXT1 mode.
• Loss of red, green or blue or excessive red, green or blue pictures.
• Low brightness (even after turning up the preset in the U200 module).
• Fails in standby. (extract of circuit diagram attached)
• Goes into safety mode if it is left in standby then switched on via the switch. Starts normally if speaker or HT O/C. (part of circuit diagram displayed)
• Voltage too low. (picture attached)
• Faulty TXT. No TXT. intermittently.
• Power supply BU and fuse are defective when TV started up from standby. Occurs every week or fortnight and is very variable. (+ extract of circuit diagram) (704027 tips)
• BUT11AF S/C. (with circuit diagram extract)
• Intermittently dead. (part of circuit diagram displayed)
• No picture. on lower half screen. (+ extract of circuit diagram)
• Power supply blows when put into standby. (+ extract of circuit diagram)
• No picture at switch on but after a few minutes picture appears with weak contrast. Picture improves gradually and after approx 30 mins is normal. (+ extract of circuit diagram)
• Flash over on picture tube print.
• No synchronisation.
• Starts, but only raster. Display shows "F3". (with circuit diagram extract)
• Vertical shift incorrect, after replacing a 28" BL-CRT. (picture attached)
• Humming noise from transformer. in standby. (with circuit diagram extract)
• Line output transformer does not start up. (with circuit diagram extract)
• Darker bar on left of screen. (picture attached)
• Width of picture pumps according to picture content and narrows with a strong white. (part of circuit diagram displayed)
• TXT has no function. TXT is activated but only dark screen.
• No horizontal synchronisation. when cold. (picture attached)
• Poor RC sensitivity.
• CTV functions one day. (with circuit diagram extract)
• Quick diagnosis (with circuit diagram extract) (704027 tips)
• Vertical sync does not stop. (with circuit diagram extract)
• Picture flickers the first 5 minutes. Gradually becomes less but very visible in the dark portions of the screen.
• No audio. Picture OK . (+ extract of circuit diagram)
• TS7625 (BUT 18AF) fails again. (with circuit diagram extract)
• Does not switch to standby. LED turns pink. Picture remains. Sound mutes. (+ extract of circuit diagram)
• Poor regulation of the power supply. (with circuit diagram extract)
• No adjustment from PSU possible. (part of circuit diagram displayed)
• Power supply goes into safety mode and crackles. (picture attached)
• No audio. when cold. No OSD. when cold. (picture attached)
• Protective circuit starts up. (with circuit diagram extract)
• Intermittently line tearing in picture at the edges.
• Microprocessor/eprom screening plate. (with circuit diagram extract)
• Coloured spots in picture (local dooming). (extract of circuit diagram attached)
• Vertical bars on channels 2 and 4 (with circuit diagram extract)
• Sound was OK but there was no vision for the first 10 mins after switch on. (picture attached)
• Transformation in K' (only for stereo versions). (with circuit diagram extract)
• Shuts down. after a while. LED blinks .
• After a power supply fault caused by a storm video is defective. CTV in AV retains the picture of the TV programme which is being watched. Sound cuts out but OSD EX1 appears and the channel no. remains. (picture attached)
• Horizontal line in the middle of screen.
• Line end-stage has no function.
• PSU becomes defective after switch on via mains switch.
• No colour. Coloured bars in picture. OK after a few minutes. (extract of circuit diagram attached)
• Reduced vertical size at bottom.
• No picture. Bright raster. Flyback lines. Audio OK . (with circuit diagram extract)
• Picture is stretched - begins 5cms from bottom of the screen and is missing approx 1cm East/West. Appliance functions. (with circuit diagram extract)
• Mono/Stereo-indication switches. (part of circuit diagram displayed)
• Horizontal stripe. (with circuit diagram extract)
• Replacing the EEPROM. (with circuit diagram extract)
• Poor picture synchronisation during station switch-over. Vertical picture jitter, runs through, poor picture via RF or EXT. (picture attached)
• Intermittently screen blanks out. Random characters on screen.
• 148V at approx 30V. (picture attached)
• Usys voltage of line output stage collapses to approx 48V. (with circuit diagram extract)
• Operating voltage stabilises at 50V. (part of circuit diagram displayed)
• Picture flickers for approx 5 mins after switch on when cold, then everything normal as soon as appliance reaches room temperature.
• Occasionally BUT18 blows in standby. (extract of circuit diagram attached)
• Flyback lines. intermittently.
• Noise in audio.
• No tuning. when cold. (part of circuit diagram displayed)
• Blue picture. after a while. (+ extract of circuit diagram)
• Pulsating, no start up. (+ extract of circuit diagram)
• No HV. (+ extract of circuit diagram)
• Difficult horizontal and vertical adjustment and sawtooth at the side. (part of circuit diagram displayed)
• No switching into CCIR standard. Display ok in SECAM and PAL/SECAM. (picture attached)
• Contrast adjustment inoperative, colour streaks. (picture attached)
• Picture stretched at top, compressed at bottom with black bar. Picture improves when warm. (with circuit diagram extract)
• Orange spots on the right of the screen. (OTTOVERSAND - 704027 information)
• Distorted audio.
• Stuck on channel 1.
• Switches to safety mode at approx. 110 V mains voltage. (part of circuit diagram displayed)
• To give improved protection to the BUT11AF chopper transistor TR7665. (704027 tip from OTTOVERSAND)
• Erratic functions. (part of circuit diagram displayed)
• Set can be turned off with RC, but not turned on. S.B. LED blinks. (+ extract of circuit diagram)
• +120V instead of +148V. (with circuit diagram extract)
• Thyristor goes S/C when switched to standby. (extract of circuit diagram attached)
• No vertical deflection. intermittently. (with circuit diagram extract)
• Set functions with the variac but BUT11AF blows when appliance is plugged in. (extract of circuit diagram attached)
• Colour flickering during video editing.
• Grey screen. (extract of circuit diagram attached)
• Goes dead when switched to standby by RC. No standby LED. Switching on and off at mains, restores normal functions (picture attached)
• At switch on with the mains switch, pulsates and after a while begins to function regularly (not always). Does not switch off completely if switched off with RC. (+ extract of circuit diagram)
• Unadjustable horizontal centering. (+ extract of circuit diagram)
• After switch on the picture is sometimes shifted and a black horizontal bar appears in the centre of the picture. (extract of circuit diagram attached) (704027 tips)
• Dead. Soft ticking sound.
• Protection for BUT18AF in PSU.
• No sound in scart. Sound and picture via the tuner. The appliance does not pick up anything. (with circuit diagram extract) (OTTOVERSAND - 704027 information)
• Vertical deflection is defective. A piece is missing at the bottom and at the top the lines are pulled apart. (picture attached)
• Interference in picture. when cold. (extract of circuit diagram attached)
• Dark picture. intermittently. (with circuit diagram extract)
• Picture is affected by frizzy lines occasionally with crackling noise in the speakers and perhaps with a burnt smell. (part of circuit diagram displayed)
• Insufficient picture height which can be adjusted. Poor E/W.
• No picture, teletext and sound are fine. (with circuit diagram extract)
• BUT18 is defective. (picture attached)
• Red picture. after a while. (+ extract of circuit diagram)
• Switching transistor T7625 has failed. (part of circuit diagram displayed)
• The output transistor of the power supply is defective. BUT11AF or 2SC3973B.
• No picture. Audio and OSD OK .
• BUT18AF (T7625) becomes defective in standby. (part of circuit diagram displayed)
• Appliance does not start up. Crackling. (part of circuit diagram displayed)
• PSU voltage low at 20V. (extract of circuit diagram attached)
• Red light flashes for approximately 3 seconds then zero.
• Defective BUT and fuse in the PSU. After replacing the appliance runs for several days until the fault occurs again. (part of circuit diagram displayed)
• Doesn't function with dummy load. (picture attached)
• TV blocked in F3.
• After a few secs in standby, 7625 and fuse destroyed. (+ extract of circuit diagram)
• Red standby light then dead at switch on. TV starts up on the variac. (part of circuit diagram displayed)
• Picture jitters. when cold. (+ extract of circuit diagram)
• Poor horizontal centering. (extract of circuit diagram attached)
• PSU repair. (picture attached)
• Switches to protection mode. intermittently. (part of circuit diagram displayed)
• Undefined STEREO mono switch over. OSD mono STEREO display present. (picture attached)
• Discharging noise. via speakers.
• Does not go into standby. LED becomes orange but picture remains. (extract of circuit diagram attached)
• Horizontal size varies. (part of circuit diagram displayed)
• When warm, picture foldover and the line BU blows. (picture attached)
• Line output transistor fails repeatedly. after start-up.
• Strange noise in loudspeakers. (extract of circuit diagram attached)
• Loud noises from speaker. Picture OK .
• No picture, only horizontal stripe on top. Picture appears only after a long while. Then picture collapses to a horizontal stripe in the centre.
• Standby LED flashes at switch on, then switches off after a few secs, if no action is taken. If RC is pressed LED remains on, but no picture and audio. (with circuit diagram extract)
• Intermittent picture size.
• Power supply failure. (with circuit diagram extract)
• BU508 blows one min after HT transistor (BU508AF) has been replaced. Picture OK during this one min.
• Line tearing and picture quiver at the edges.
• Retrace lines. intermittently.
• Lines in picture. on the left.
• Horizontal line. in the centre. (picture attached)
• +148V drops to 100V occasionally according to the tube output. (+ extract of circuit diagram)
• Chroma fault in SECAM. (part of circuit diagram displayed)
• No vertical deflection. Horizontal line. (picture attached) (OTTOVERSAND - 704027 information)
• No functions. No button operation. (extract of circuit diagram attached) (704027 tips)
• Secondary voltages fall when loaded. (extract of circuit diagram attached)
• Switch on during standby only functions when RC is very close to the appliance. (704027 tip from OTTOVERSAND)
• With Blackline picture tubes in the EXT1-Mode a white field is visible on the right side.
• No button operation. intermittently. (+ extract of circuit diagram)
• Black stripe on left edge of screen. Horizontal linearity is not correct. (part of circuit diagram displayed)
• Sometimes the BUT18AF goes defective. (part of circuit diagram displayed)
• Intermittently green "F5" on screen, thereby very dark picture or TXT appears. (picture attached)
• No picture and no sound. (+ extract of circuit diagram)
• Does not switch on from standby. LED blinks and goes off or changes to red and then no more functions.
• Picture is too big or too small during horizontal amplitude adjustment.
• Picture size varies with picture content. (+ extract of circuit diagram)
• No picture. in E-E. Audio OK .
• Regulation does not function without a load. (+ extract of circuit diagram)
• Vertical size varies. Vertical jitter.
• Slow start-up. Switches to standby. (picture attached)
• Dark picture with thin vertical stripe in upper picture. (with circuit diagram extract) (OTTOVERSAND - 704027 information)
• 6cm black bar at bottom of picture.
• Over-voltage circuit active. (with circuit diagram extract)
• Black horizontal lines. (extract of circuit diagram attached) (OTTOVERSAND - 704027 information)
• Excessive red. (OTTOVERSAND - 704027 information)
• Picture is not linear. Black bar at bottom of picture. (extract of circuit diagram attached)
• Picture flickers intermittently, sound disappears. Picture reappears by itself, sound doesn't but can be activated with the RC.
• Memory loss. (picture attached)
• Occasionally standby thyristor 6670 S/C. (+ extract of circuit diagram) (704027 tip from OTTOVERSAND)
• Vertical roll. (picture attached)
• Dark background and a band of colour on the right. (+ extract of circuit diagram)
• No sound at some stations or audio failure. Via scart OK.
• Blocked. (part of circuit diagram displayed)
• Picture takes a long time to appear (several mins). (extract of circuit diagram attached)
• White area visible on right side of screen in EXT1 mode of BL sets. (part of circuit diagram displayed)
• Intermittent fault all over the screen or over an irregular width band leading to line foldover, similar to coded Canal Plus picture. (+ extract of circuit diagram)
• Transistor T7545 (BU508AF) becomes intermittently defective at program switch-over via "+" and "-" on user control. (704027 tip from OTTOVERSAND)
• U148V measures 20V.
• Dead set caused by lightning damage. (picture attached)
• With high volume the appliance switches spontaneously to standby. (extract of circuit diagram attached)
• Reduced vertical deflection. intermittently. (extract of circuit diagram attached)
• Poor chroma identification in Pal/Secam. On channels 5, 6 or with VCR, blue or red bands. (+ extract of circuit diagram)
• Poor frame linearity when cold. Picture is distorted vertically. (extract of circuit diagram attached)
• Line BU blows after operating for 3-5 mins. (part of circuit diagram displayed)
• Picture shifted to the right. Poor synchronisation. (with circuit diagram extract)
• Does not stop at stations. Station search OK. (picture attached) (704027 tip from OTTOVERSAND)
• No E/W. (service info for OTTOVERSAND -704027)
• Low contrast. in TXT. (part of circuit diagram displayed)
• The screen is white and there is no sound. The line transistor blows after 5 minutes. (with circuit diagram extract)
• R3653 burns. (picture attached)
• Line output stage periodically fails. (with circuit diagram extract)
• When put into standby tube remains lit. Picture cuts out normally. (picture attached)
• Green picture. after a while. (part of circuit diagram displayed)
• Blows fuse. after a few hours. (extract of circuit diagram attached)
• No deflection. Horizontal line.
• PSU has no function.
• No teletext and OSD is hardly visible. The regular picture vibrates if appliance is switched to teletext. (with circuit diagram extract) (704027 tips)
• Distorted vertical lines at top and bottom of monoscope. E/W correction is faulty. (+ extract of circuit diagram) (704027 OTTOVERSAND repair tip)
• Tuning does not function, drifts, raster doubles up. Vertical sychronisation fault. (picture attached)
• Audio drop out or mute.
• Lower picture third is dark. Upper picture is dispersed. (part of circuit diagram displayed)
• Primary PSU switches off. No standby LED. (704027 OTTOVERSAND repair tip)
• No function, only hums. (+ extract of circuit diagram)
• Local dooming - spots in the picture.
• S/C in EHT stage. (extract of circuit diagram attached)
• Low sound on channel A. (picture attached)
• Does not switch to standby. Horizontal line. LED blinks . (extract of circuit diagram attached)
• Capacitor 2545 in PSU burns. (picture attached)
• Ghosts and poor colours. (with circuit diagram extract)
• Egg-shaped picture, picture is pushed upwards. Underneath 5cm black bar. (picture attached)
• Vertical roll. when cold. (+ extract of circuit diagram)
• No audio. after a while. (with circuit diagram extract)
• Lacks contrast. No reaction on the plus or minus key of the contrast button. Other commands are ok.
• Impossible to adjust horizontal shift of picture using R3595. (with circuit diagram extract)
• Fuse and PSU BU (BUT18AF) defective.
• Tuning unstable. (picture attached)
• No function. On start-up easy chirp is audible. (+ extract of circuit diagram)
• Does not switch to standby. No functions. at switch-off. (picture attached)
• If mains switched off when in standby, it does not start up again. Light off. (picture attached)
• Vertical linearity is upwards a little sharp. Picture has shifted upwards. (picture attached)
• After approx 10 minutes startup picture randomly disappears then reappears. No TEXT, only a mass of lines.
• U system only 5V instead 148V. (with circuit diagram extract)
• Low contrast. (+ extract of circuit diagram)
• Frame shrinks horizontally when changing brightness. (with circuit diagram extract)
• Replacing TDA2579. (with circuit diagram extract)
• No picture and sound. Buzz from power supply transformer.
• Vertical deflection is defective. Picture present, after a short time a line appears then picture disappears. (extract of circuit diagram attached)
• Cannot be switched to standby. After the first attempt appliance is blocked. (part of circuit diagram displayed)
• Too high power supply. (with circuit diagram extract)
• Spare part info: values of C2546, C2547 and C2545, located on collector of T7545. (picture attached)
• No synchronisation. when cold. (part of circuit diagram displayed)
• No picture. after a while. White screen. (with circuit diagram extract)
• One single line in the middle of the screen. (+ extract of circuit diagram)
• E-W output stage fails as soon as the appliance is switched on. Fuse 1534 (315mA) also fails. (part of circuit diagram displayed)
• Slow start-up. (with circuit diagram extract)
• Switches off after operation time. LED goes off. Dead. Can be turned on via mains switch, then switches off again after operation time.
• +16V flashover. (extract of circuit diagram attached)
• BUT transistor becomes S/C either at switch on or after a certain period of time. (with circuit diagram extract)
• Sound only at program switch-over. (picture attached)
• Excessive blue.
• No horizontal synchronisation. (with circuit diagram extract) (704027 tips)
• No colour. when cold. Poor colour. after warm-up. (with circuit diagram extract)
• Narrowing of line and frame then flashing of the picture. Screen turns dark after 10 mins. Picture ok when cold. (picture attached) (704027 tip from OTTOVERSAND)
• Vertical collapse. intermittently. (picture attached)
• Dark picture. No picture. via SCART. No audio. via SCART. No RC functions. (with circuit diagram extract)
• Picture shifted vertically.
• PSU fuse blown. (+ extract of circuit diagram)
• PSU blown.
• Hum in audio. (part of circuit diagram displayed)
• After start up, PSU fails. (+ extract of circuit diagram)
• Defective T7545. (picture attached)
• Does not switch to standby. Picture remains on screen. (extract of circuit diagram attached)
• Distorted picture. (part of circuit diagram displayed)
• No picture. No display. Erratic functions. (+ extract of circuit diagram)
• At start up picture appears normally then darkens gradually in PAL. Normal in SECAM. Sound ok. Picture reappears by reducing the contrast, OSD normal. All other functions normal. (extract of circuit diagram attached)
• Frayed vertical lines. (picture attached)
• No switch on. Red LED flickers for 3 seconds.
• Raster signal problem.
• PSU defective. (with circuit diagram extract)
• Can not be switched off in Standby position. When starting, LED becomes orange and blows. (part of circuit diagram displayed)
• Appliance works for 4 hours and then cuts out completely.
• No power supply, protection circuit triggered. (picture attached)
• Starts without picture and audio then switches off after a few seconds.
• Horizontal, bright line.
• Thyristor fails in PSU in standby. Otherwise appliance OK. (+ extract of circuit diagram)
• Dark screen. No OSD. (part of circuit diagram displayed)
• Black screen. intermittently. (+ extract of circuit diagram)
• No audio. intermittently. (with circuit diagram extract)
• Poor field linearity.
• How to check the power supply without blowing BUT18AF.
• No start-up with mains switch after switched off from standby.
• Fuse 2A and BUT18 immediately defective at switch on with RC. Fault does not occur when switching on with on/off switch or by connecting mains plug. (extract of circuit diagram attached)
• Type of transistor 7594 and value of resistor R3596.
• PSU no function.
• Destruction of the power supply BU. (part of circuit diagram displayed)
• Appliance fails and later comes back unprompted. (part of circuit diagram displayed) (OTTOVERSAND - 704027 information)
• Wavy picture. at top.
• Hum bar.
• The appliance functions correctly in standard B,G but the sound hums in F standard. (part of circuit diagram displayed)
• Volume uncontrollable. No brightness control.
• Dead. intermittently.
• PSU fails after a short time (S/C of BUT18AF). (extract of circuit diagram attached)
• Supply transistor BUT18A becomes defective immediately after switching on the appliance. (+ extract of circuit diagram)
• Power supply breaks down. (with circuit diagram extract)
• Connection of a loop system to the TV.
• Contrast variations with subtitling in sets with BL-CRT. (picture attached)
• Dark streak on screen. (704027 tips)
• Noise in picture. (extract of circuit diagram attached)
• 148V does not go pass 20V. (with circuit diagram extract)
• White picture with flyback lines. (with circuit diagram extract)
• Power supply crackles when power supply is low. (picture attached)
• Causes for appliance going into safety mode.
• Line output transformer overheats. (with circuit diagram extract)
• Power supply BU blows after a few days.
• The resistors 3661 and 3662 burn in standby, TS7625 is also defective sometimes. (part of circuit diagram displayed)
• No LED lit. (part of circuit diagram displayed) (704027 tip from OTTOVERSAND)
• Trips. (extract of circuit diagram attached)
• Flashing picture. (extract of circuit diagram attached) (service info for OTTOVERSAND -704027)
• Intermittent line and raster synchro. (extract of circuit diagram attached)
• No sound, even with in or out scart.
• Does not decode Canal Plus no the sound. Green LED flashes. (picture attached)
• F5 displayed on a screen corner. Occasionally channels switch over to channel 1 or TV switches off.
• No colour. intermittently. (picture attached)
• BUT11A fails after operating for long time. (part of circuit diagram displayed)
• Picture shakes.
• No HT output voltage of 148V. Voltage is present (approx. 158V) when disconnecting HT coils connector. (extract of circuit diagram attached)
• No start-up. Standby LED does not light. (part of circuit diagram displayed)
• No colours. After approx an hour colours appear with fluctuations. (with circuit diagram extract)
• Distorted TXT. at top. (704027 tips)
• Appliance hums in Standby.
• Poor OSD. Unusual colour of some characters. (picture attached)
• At start up goes immediately into standby. 12C BUS blocks at 5V. (picture attached)
• Pincushion distortion at each side. Adjustment potentiometer does not correct fault. (with circuit diagram extract)
• Functions but heat sink gets very hot after 10 mins. When put into standby, noise in the PSU. (part of circuit diagram displayed)
• 17V instead of 140V. (+ extract of circuit diagram) (704027 tip from OTTOVERSAND)
• S/C in 148V line. (extract of circuit diagram attached)
• Horizontal shift no function.
• S/C from point 18 at line transformer to the ground. (+ extract of circuit diagram)
• Loss of colour or no colour. (OTTOVERSAND - 704027 information)
• Sound drops out.
• No red. (+ extract of circuit diagram) (service info for OTTOVERSAND -704027)
• Picture linearity error. Picture has shifted towards top. Picture folds over at the bottom.
• TV blocks on 600MHZ. If you do a frequency search, it goes through all frequencies but does not find any channels. (extract of circuit diagram attached)
• No sound or vision, display going to F1. (OTTOVERSAND - 704027 information)
• On the test picture, distorted, vertical lines at top and bottom of the screen. (+ extract of circuit diagram)
• Reduced horizontal size. Vertical foldover. in the centre. (+ extract of circuit diagram)
• CTV switches on but nothing happens. No sound or picture on the traditional aerial. On the contrary in scart with a dish the CTV has a picture but no sound. No automatic search possible. (extract of circuit diagram attached)
• No functions. Red LED blinks. (picture attached)