774274 / OTTOVERSAND [TV]

• 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)
• No functions. Red LED blinks. (+ extract of circuit diagram)
• The picture is indented (horizontally).
• PCD8582 and X2402 memory. (extract of circuit diagram attached)
• Ticking sound. (picture attached)
• Sound drops out.
• PSU fuse blown. (picture attached)
• On channels 2 and 4 vertical lines on the left hand side of the picture.
• Blows chopper transistor when switching on with remote. (part of circuit diagram displayed)
• No colours. After approx an hour colours appear with fluctuations. (picture attached) (774274 tip from OTTOVERSAND)
• Flickering text and apparent tuning drift.
• The output transistor of the power supply is defective. BUT11AF or 2SC3973B.
• Oval picture. (service info for OTTOVERSAND -774274)
• No vertical deflection. intermittently. (extract of circuit diagram attached)
• No control signal to IC7470 (TDA) and no line scanning. (+ extract of circuit diagram)
• Dead set caused by lightning damage. (with circuit diagram extract)
• When switched off with RC, does not switch on again and LED remains off. (with circuit diagram extract) (service info for OTTOVERSAND -774274)
• Vertical stripes at left picture edge via channel 2 and 4. (+ extract of circuit diagram)
• No sound. No response to commands from both RC and front panel. Error message F2 on screen. Picture ok. (with circuit diagram extract)
• Dead. Red LED blinks. (picture attached)
• The appliance functions correctly in standard B,G but the sound hums in F standard. (+ extract of circuit diagram)
• BU508 defective after switching channel (when appliance is warm). (picture attached)
• No audio. after a while. (part of circuit diagram displayed)
• Orange spots on the right of the screen.
• No picture and no sound. (with circuit diagram extract)
• Connection of a loop system to the TV.
• Vertical deflection is defective. A piece is missing at the bottom and at the top the lines are pulled apart. (picture attached)
• Displays error code F4. When you switch to standby again, F4 appears again. LED flashes. Only noise. (+ extract of circuit diagram)
• S/C in EHT stage. (+ extract of circuit diagram)
• Darker bar on left of screen. (part of circuit diagram displayed)
• Reduced horizontal size. after a while. (picture attached)
• Functions with an automatic transformer up to 110, 120V. (picture attached) (OTTOVERSAND - 774274 information)
• Horizontal-BU 508AF has a s/c. After replacing this fails again after a few seconds. (+ extract of circuit diagram)
• Loud noises from speaker. Picture OK .
• Colour flickering during video editing.
• Contrast adjustment inoperative, colour streaks. (picture attached)
• BUT18 is defective. (extract of circuit diagram attached)
• Tuning search does not stop when appliance has found a station. (part of circuit diagram displayed)
• Flash over on picture tube print.
• Local dooming, especially with high contrast. (+ extract of circuit diagram)
• No picture. No display. Erratic functions. (+ extract of circuit diagram) (OTTOVERSAND - 774274 information)
• TXT problem. Some characters do not display.
• Secondary voltage cannot be adjusted lower than 160V. PSU however can be regulated with this voltage.
• BU508AF fails repeatedly. (+ extract of circuit diagram)
• Intermittently green "F5" on screen, thereby very dark picture or TXT appears. (part of circuit diagram displayed)
• White picture with flyback lines. (+ extract of circuit diagram)
• Width of picture pumps according to picture content and narrows with a strong white. (with circuit diagram extract)
• Low contrast. (+ extract of circuit diagram)
• Snow on screen and no reception. F4 displayed on screen. Green LED lit. (+ extract of circuit diagram)
• Does not decode Canal Plus no the sound. Green LED flashes. (picture attached)
• No E/W correction. (picture attached) (OTTOVERSAND - 774274 information)
• Blows components. after a few minutes. (picture attached)
• Picture pulsates on white background.
• Page 811 appears spontaneously. (picture attached)
• 17V instead of 140V. (picture attached)
• BUT18 fails repeatedly. (with circuit diagram extract)
• Lower picture third is dark. Upper picture is dispersed. (part of circuit diagram displayed)
• Egg-shaped picture, picture is pushed upwards. Underneath 5cm black bar. (part of circuit diagram displayed)
• Power supply blows when put into standby. (+ extract of circuit diagram)
• The sound fails: after changing over to a different channel, the sound is back. (part of circuit diagram displayed)
• Red picture. after a while. (with circuit diagram extract) (774274 tip from OTTOVERSAND)
• Power supply problem. (picture attached)
• Set can be turned off with RC, but not turned on. S.B. LED blinks. (+ extract of circuit diagram)
• Appliance works for 4 hours and then cuts out completely.
• S/C from point 18 at line transformer to the ground. (extract of circuit diagram attached)
• Single dark lines in picture centre.
• Goes into safety mode if it is left in standby then switched on via the switch. Starts normally if speaker or HT O/C. (with circuit diagram extract)
• Red flashing when changing channels with VCR playback in the still, search modes or edit points in own recordings. (+ extract of circuit diagram)
• No switch on. Red LED flickers for 3 seconds.
• Fails occasionally.
• Does not go into standby. LED becomes orange but picture remains. (extract of circuit diagram attached)
• Dark background and a band of colour on the right. (extract of circuit diagram attached)
• Grey screen. (part of circuit diagram displayed)
• Vertical foldover. (extract of circuit diagram attached)
• Vertical deflection is defective. Picture present, after a short time a line appears then picture disappears. (extract of circuit diagram attached)
• East/west raster distortion: width and shaping control do not function.
• Hum in audio. in standby. (picture attached)
• 148=68V. (with circuit diagram extract)
• Black screen. Audio OK . (with circuit diagram extract)
• Poor vertical linearity. Reduced vertical deflection. (with circuit diagram extract)
• Negative picture when cold and sometimes intermittently. (part of circuit diagram displayed)
• Replacing the EEPROM. (part of circuit diagram displayed)
• Phase fault. (+ extract of circuit diagram)
• Picture takes some time to appear. Dark screen then TV stops. Round colour spot which slowly disappears. (extract of circuit diagram attached)
• Shuts down. after a while. LED blinks .
• Retrace lines. intermittently.
• Impossible to adjust horizontal shift of picture using R3595. (picture attached)
• No switching into CCIR standard. Display ok in SECAM and PAL/SECAM. (+ extract of circuit diagram)
• Blows fuse. after a few hours. (+ extract of circuit diagram)
• Green picture. after a while. (with circuit diagram extract)
• Transformation in K' (only for stereo versions). (+ extract of circuit diagram)
• Horizontal end stage BU508AF short circuits after different playing times. (+ extract of circuit diagram)
• Service mode
• Pincushion distortion at each side. Adjustment potentiometer does not correct fault. (extract of circuit diagram attached)
• HT varies intermittently.
• No switch on. Noise from loud-speakers and smell of burning. (with circuit diagram extract)
• Reduced format, flyback line slightly visible. (extract of circuit diagram attached)
• Picture varies with beam current. (+ extract of circuit diagram)
• In Standby BUT18AF (T7625) becomes defective.
• Unadjustable horizontal centering. (with circuit diagram extract)
• Dark screen. No OSD. (+ extract of circuit diagram)
• No picture, no sound. TV starts up and tube lights up. (picture attached)
• 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. (picture attached)
• Dark streak on screen.
• No picture. Bright raster. Flyback lines. Audio OK . (extract of circuit diagram attached)
• Line end stage U/syst collapses to approx. 48V. (part of circuit diagram displayed)
• When put into standby tube remains lit. Picture cuts out normally. (+ extract of circuit diagram)
• Coloured spots in picture (local dooming). (with circuit diagram extract)
• PSU repair. (part of circuit diagram displayed)
• Red standby light then dead at switch on. TV starts up on the variac. (picture attached)
• Line BU508blows after 3 days. (extract of circuit diagram attached)
• Horizontal line in the middle of screen.
• Usys voltage of line output stage collapses to approx 48V. (with circuit diagram extract)
• Trips. (extract of circuit diagram attached)
• No start-up. intermittently. (+ extract of circuit diagram)
• White area visible on right side of screen in EXT1 mode of BL sets. (picture attached)
• Reduced horizontal size. intermittently.
• Vertical shift incorrect, after replacing a 28" BL-CRT. (extract of circuit diagram attached)
• Blank raster. No tuning.
• Luminance takes a long time to appear. Distorted picture, focus pot does not react sufficiently. (+ extract of circuit diagram)
• S/C in line output stage (7645). (picture attached)
• Poor picture. via tuner. (picture attached)
• Switches off during operation. When it is switched on again crackling is heard from HT. (picture attached)
• Spare part info: values of C2546, C2547 and C2545, located on collector of T7545. (+ extract of circuit diagram)
• Distorted picture. at top. (part of circuit diagram displayed)
• No functions. Power LED lit . (extract of circuit diagram attached)
• Vertical linearity is upwards a little sharp. Picture has shifted upwards. (picture attached)
• Vertical bar. on the left. (with circuit diagram extract)
• Horizontal stripe. (part of circuit diagram displayed) (service info for OTTOVERSAND -774274)
• Interference in picture. No picture. No audio. (with circuit diagram extract)
• Picture linearity error. Picture has shifted towards top. Picture folds over at the bottom.
• BUT11A fails after operating for long time. (picture attached)
• Intermittently dead. (with circuit diagram extract)
• Occasionally standby thyristor 6670 S/C. (+ extract of circuit diagram)
• Buzzing from PSU. in standby. (part of circuit diagram displayed)
• No picture. No audio. OK via SCART . (extract of circuit diagram attached)
• Appliance starts up with the variac until it reaches 100V and then the appliance fails. (+ extract of circuit diagram)
• Picture shakes.
• Only grey picture after being struck by lightning. TXT also runs. (extract of circuit diagram attached)
• Picture flickers the first 5 minutes. Gradually becomes less but very visible in the dark portions of the screen.
• Occasionally picture seems to be coded on all the channels especially when cold. (picture attached)
• Blank screen. Audio OK . (774274 tips)
• How to check the power supply without blowing BUT18AF.
• Lines in picture. on the left.
• No colour. (part of circuit diagram displayed)
• Poor regulation. (picture attached) (774274 OTTOVERSAND repair tip)
• Switches on for a few secs with extreme brightness. No picture. Sound OK. Goes into safety mode immediately after.
• Shuts down. LED is green. (+ extract of circuit diagram)
• Switches off intermittently. Standby LED (red-green) flashes. Picture drops out. (picture attached)
• Intermittently line tearing in picture at the edges.
• Spare part info: Value of C2546 and C2545 near line output transformer.
• Intermittently blown Wickman fuse 1534.
• BUT18 blows at 100V on the variac.
• Switching transistor T7625 has failed. (+ extract of circuit diagram)
• No function, only hums. (+ extract of circuit diagram)
• The power supply BUT18AF shorts after operating for 5 hours. (part of circuit diagram displayed)
• Line BU blows after operating for 3-5 mins. (part of circuit diagram displayed)
• Does not store settings. (part of circuit diagram displayed)
• Black screen. No brightness. Audio OK . (extract of circuit diagram attached)
• At start up goes immediately into standby. 12C BUS blocks at 5V. (picture attached)
• Switch on during standby only functions when RC is very close to the appliance.
• +148V drops to 100V occasionally according to the tube output. (picture attached)
• With Blackline picture tubes in the EXT1-Mode a white field is visible on the right side.
• No regulation. (extract of circuit diagram attached)
• White square in a corner of the screen. (+ extract of circuit diagram) (774274 tip from OTTOVERSAND)
• No picture. when cold. Audio OK . (picture attached)
• Hum in audio. (+ extract of circuit diagram)
• Dark picture. No picture. via SCART. No audio. via SCART. No RC functions. (extract of circuit diagram attached)
• Poor regulation of the power supply. (+ extract of circuit diagram)
• Colour flickering during video editing.
• The horizontal centering cannot be adjusted correctly. It may have shifted after the appliance has warmed up.
• Power supply breaks down. (picture attached)
• No function. On start-up easy chirp is audible. (+ extract of circuit diagram)
• Slight E/W distortion. (extract of circuit diagram attached)
• No start-up with mains switch after switched off from standby.
• Very loud sound at switch but normal at previous switch off. Adjustment OK.
• The bottom half of the raster is missing, with the top cramped.
• Protection mode activated.
• Searches for channels continuously. (+ extract of circuit diagram)
• Reduced raster size. (+ extract of circuit diagram)
• Chopper transistor (BUT18AF), rectifier diodes and mains fuse become defective instantly. (with circuit diagram extract) (OTTOVERSAND - 774274 information)
• Undefined Stereo Mono switchover.
• Picture green and purple in the E/W direction.
• No sound or vision, display going to F1.
• Appliance fails and later comes back unprompted. (with circuit diagram extract)
• Takes approx 1 minute to come on, will not switch to standby, sound mutes but pulsating picture remains. (part of circuit diagram displayed)
• No channels. (774274 tip from OTTOVERSAND)
• Dark screen. No picture. No RC functions. (+ extract of circuit diagram) (774274 tip from OTTOVERSAND)
• Line BU keeps failing. (picture attached)
• Blows chopper transistor. (+ extract of circuit diagram)
• Ragged verticals.
• Narrowing of line and frame then flashing of the picture. Screen turns dark after 10 mins. Picture ok when cold. (with circuit diagram extract) (774274 tip from OTTOVERSAND)
• White screen.
• No picture, no sound, no display, 148V is reduced to approx 50V. (774274 tips)
• 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.
• Power supply failure. (picture attached)
• Line output transistor fails repeatedly. intermittently. (part of circuit diagram displayed)
• Dark screen. via tuner. Audio and OSD OK . (part of circuit diagram displayed)
• Cannot be switched to standby. After the first attempt appliance is blocked. (extract of circuit diagram attached)
• 148V at approx 30V. (picture attached)
• The front control panel changes channels upwards but not downwards. All other functions OK.
• Horizontal line. Audio OK . (extract of circuit diagram attached)
• Colour bar at right of screen. (extract of circuit diagram attached)
• Blows components. at start-up. (with circuit diagram extract)
• Sound is noisy.
• No audio. when cold. No OSD. when cold. (+ extract of circuit diagram)
• Mono/stereo display error. (with circuit diagram extract)
• The screen is white and there is no sound. The line transistor blows after 5 minutes. (with circuit diagram extract)
• Flashing picture. (with circuit diagram extract) (774274 tip from OTTOVERSAND)
• CTV functions one day. (part of circuit diagram displayed)
• References for transistors 7615 and 7612.
• In standby tries to operate spontaneously. (picture attached)
• Snow on screen and no tuner reception. F3 displayed on screen. Green LED on.
• Picture and sound drop out. Appliance jumps to channel 1.
• Excessive vertical size. (with circuit diagram extract)
• After about 3 to 4 weeks of regular play, the BUT18 and the main fuse automatically blow. (picture attached)
• Defective SOPS. (extract of circuit diagram attached)
• Type of transistor 7594 and value of resistor R3596.
• Horizontal stripe. intermittently. (picture attached)
• Tuning unstable. (picture attached)
• Crackle a few seconds after Power On. (extract of circuit diagram attached)
• 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 attached)
• No picture. F4 lights up in the display. (with circuit diagram extract)
• Poor horizontal centering. (picture attached)
• Adjustment black line matrix.
• No LED lit. (with circuit diagram extract)
• Power supply is low when warm. (picture attached)
• Ragged picture.
• 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. (part of circuit diagram displayed) (service info for OTTOVERSAND -774274)
• No picture. after a while. White screen. (+ extract of circuit diagram)
• Tuning search does not stop.
• Power supply is often destroyed when left in standby. (+ extract of circuit diagram)
• Blows chopper transistor at switch on.
• Chopper transistor (BUT18AF) fails if appliance is switched on from standby. (part of circuit diagram displayed) (service info for OTTOVERSAND -774274)
• T7637 blown. (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.
• Power supply too low (70V). (extract of circuit diagram attached) (774274 OTTOVERSAND repair tip)
• Frizzy lines on the picture.
• Over-voltage circuit active. (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. (774274 OTTOVERSAND repair tip)
• Ballooning and incorrect picture linearity.
• Vertical collapse. intermittently. (+ extract of circuit diagram)
• No picture. when cold. (part of circuit diagram displayed)
• No PAL chroma.
• 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)
• No operation. (picture attached)
• PSU voltage low at 20V. (extract of circuit diagram attached) (service info for OTTOVERSAND -774274)
• Thyristor TR7670 breaks down after two days (loose contacts). (+ extract of circuit diagram)
• Does not stop at stations. Station search OK. (extract of circuit diagram attached)
• Starts without picture and audio then switches off after a few seconds.
• No TXT, just lines on screen. (774274 tips)
• No picture or narrow streak after warm-up. (+ extract of circuit diagram)
• Buzz in audio. (+ extract of circuit diagram)
• BUT18AF blows in standby on the collector. (extract of circuit diagram attached)
• PSU fails after a short time (S/C of BUT18AF). (+ extract of circuit diagram)
• EXT1 switchover is defective, terrestrial program remains.
• Intermittent black picture with TXT. Intermittent TXT in picture.
• Thyristor pos. 6670 fails. (picture attached)
• Power supply goes into safety mode and crackles. (picture attached)
• Noise in picture. (part of circuit diagram displayed)
• Red LED blinking for 3 secs.
• Operating voltage stabilises at 50V. (with circuit diagram extract)
• Sound only at program switch-over. (with circuit diagram extract)
• Diode D6653 installation sops kit.
• TV locked by and keys.
• Set does not start-up after implementing SOPS kit. (picture attached) (774274 OTTOVERSAND repair tip)
• White picture on the right side in EXT1 mode.
• Regulation does not function without a load. (extract of circuit diagram attached) (service info for OTTOVERSAND -774274)
• Picture takes a long time to appear (several mins). (picture attached)
• Cramped at bottom with slight foldover.
• Vertical foldover at top.
• 148V measures 60V. (extract of circuit diagram attached)
• Vertical foldover at top and bottom. (+ extract of circuit diagram) (774274 tip from OTTOVERSAND)
• No E/W correction. Pincushion distortion. (with circuit diagram extract)
• Low contrast. in TXT. (part of circuit diagram displayed)
• When switching on the appliance when it's cold, it takes about 35 seconds before the picture appears. (extract of circuit diagram attached)
• Line output transistor fails repeatedly. after a while. (picture attached)
• No sound, even with in or out scart.
• Line output transistor fails repeatedly. after start-up.
• Squealing from PSU. after start-up. (part of circuit diagram displayed)
• After a few secs in standby, 7625 and fuse destroyed. (part of circuit diagram displayed) (774274 tip from OTTOVERSAND)
• Top of text is ringing. Intermittent text.
• Lacks contrast. No reaction on the plus or minus key of the contrast button. Other commands are ok.
• Switches to safety mode at approx. 110 V mains voltage. (extract of circuit diagram attached)
• Defective BUT and fuse in the PSU. After replacing the appliance runs for several days until the fault occurs again. (+ extract of circuit diagram)
• Dark picture. Audio OK . (picture attached)
• No contrast control. (extract of circuit diagram attached)
• Horizontal, bright line.
• No linearity. (extract of circuit diagram attached)
• Blocked. (+ extract of circuit diagram)
• F5 displayed on a screen corner. Occasionally channels switch over to channel 1 or TV switches off.
• After approx 10 minutes startup picture randomly disappears then reappears. No TEXT, only a mass of lines.
• Picture flickers intermittently, sound disappears. Picture reappears of itself, sound doesn't but can be activated with the RC.
• Distorted picture. (with circuit diagram extract)
• No brightness. No audio. Raster OK . (with circuit diagram extract)
• Poor linearity. (+ extract of circuit diagram)
• No colours at start up 50% of the time on satellite channels. OK in HF and VCR. (extract of circuit diagram attached)
• Picture jitters and vertical bars distorted on cross-hatched pattern. Blue horizontal bars. (with circuit diagram extract)
• Shuts down. after a few minutes. (+ extract of circuit diagram)
• 100V power supply is approx 35V. (picture attached)
• Black horizontal lines. (extract of circuit diagram attached) (774274 OTTOVERSAND repair tip)
• With Blackline picture tubes occasional or random OSD insertion.
• BU508, Q7593 and Q7594 are defective. (picture attached)
• Goes to blank screen with unlocked TXT lines when TXT selected.
• BUT transistor becomes S/C either at switch on or after a certain period of time. (+ extract of circuit diagram)
• Excessive brightness. (picture attached)
• R3653 burns. (picture attached)
• Voltage too low. (+ extract of circuit diagram)
• Mono/Stereo-indication switches. (part of circuit diagram displayed)
• No synchronisation. when cold. (picture attached)
• Too high power supply. (picture attached)
• No tuner reception. Search display functions well but appliance does not pick up any channel. (with circuit diagram extract) (774274 tip from OTTOVERSAND)
• Local dooming - spots in the picture.
• BUT11 becomes defective after 3 days of use. (extract of circuit diagram attached)
• No TXT. (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 (part of circuit diagram displayed)
• Very low secondary voltages. (with circuit diagram extract)
• Dead. intermittently.
• No button operation. intermittently. (part of circuit diagram displayed)
• +16V flashover. (part of circuit diagram displayed)
• Slow start-up. Switches to standby. (picture attached)
• Red light flashes for approximately 3 seconds then zero.
• No red. (+ extract of circuit diagram)
• PSU varies according to picture content when warm. (extract of circuit diagram attached) (OTTOVERSAND - 774274 information)
• Modification: Colour decoder chip IC7260.
• Vertical collapse. (picture attached) (774274 tips)
• 5.1V incorrect. (part of circuit diagram displayed)
• No audio. Picture OK . (extract of circuit diagram attached)
• When warm, there is a raster fault on the left. (with circuit diagram extract)
• Loss of colour or no colour. (774274 tips)
• Horizontal line. in the centre. (part of circuit diagram displayed)
• The line transistor blows after 5 minutes. (with circuit diagram extract)
• Intermittent picture size.
• Destruction of the power supply BU. (picture attached)
• Switches to protection mode. (picture attached)
• PSU becomes defective after switch on via mains switch.
• Chopper and line output transistors S/C. (picture attached)
• No horizontal synchronisation. (with circuit diagram extract)
• Dead. Error code F1 displayed.
• Picture looks as if it were encoded (like on C+ channel). Sound is OK. (OTTOVERSAND - 774274 information)
• Line BU blows after a moment. (part of circuit diagram displayed)
• No picture. TXT OK . (+ extract of circuit diagram)
• No tuning. when cold. (picture attached)
• Repeated failure of CRT.
• Intermittently BUT18 defective after switching on. (with circuit diagram extract)
• Wavy picture. at top.
• BUT11 in power supply defective after few days, or when in standby. (+ extract of circuit diagram) (774274 tip from OTTOVERSAND)
• No vertical deflection. Horizontal line. (picture attached)
• Crackling from FBT and black vertical bars on screen for a few secs after start up. (part of circuit diagram displayed)
• 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)
• Reduced vertical size at bottom.
• Jagged picture. (picture attached)
• Difficult horizontal and vertical adjustment and sawtooth at the side. (part of circuit diagram displayed)
• Sound and picture pulsating (2 times a sec) only via tuner.
• Transistor 7545 (BU508AF) is blown. (picture attached)
• Vertical synchronisation fault when hot and presence of white line, then picture disappears (part of circuit diagram displayed) (OTTOVERSAND - 774274 information)
• Picture shifted vertically. (774274 OTTOVERSAND repair tip)
• No start-up. (extract of circuit diagram attached)
• Intermittent line and raster synchro. (+ extract of circuit diagram)
• Appliance hums in Standby.
• LED lights up for a moment. TV is dead. Light on the power supply sometimes functions. (with circuit diagram extract)
• TV blocked in F3.
• Line output transformer overheats. (extract of circuit diagram attached)
• Power supply BU blows after a few days.
• Microprocessor/eprom screening plate. (+ extract of circuit diagram)
• Line output transistor fails repeatedly. (+ extract of circuit diagram)
• Picture is too wide or too small when adjusting horizontal size.
• Picture is too big or too small during horizontal amplitude adjustment.
• 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)
• Intermittent memory problem.
• Poor picture synchronisation during station switch-over. Vertical picture jitter, runs through, poor picture via RF or EXT. (+ extract of circuit diagram)
• Line tearing and picture twitching at the sides of the picture.
• Intermittent colour.
• R3368 and R3369 burn up at switch on. (+ extract of circuit diagram)
• No picture. on lower half screen. (extract of circuit diagram attached)
• No picture. Audio and OSD OK .
• Strange noise in loudspeakers. (part of circuit diagram displayed)
• Can not be switched off in Standby position. When starting, LED becomes orange and blows. (part of circuit diagram displayed)
• Reduced horizontal size. Vertical foldover. in the centre. (with circuit diagram extract)
• Replacing TDA2579. (+ extract of circuit diagram)
• No tuning.
• Defective line transistor. (picture attached)
• Defective standby thyristor (SFOR5D43). (part of circuit diagram displayed)
• No picture. Audio OK . (part of circuit diagram displayed)
• U system only 5V instead 148V. (with circuit diagram extract)
• Humming noise from transformer. in standby. (picture attached)
• U148V measures 20V.
• Set functions with the variac but BUT11AF blows when appliance is plugged in. (extract of circuit diagram attached)
• Mains fuse O/C and BUT S/C. (+ extract of circuit diagram)
• Transistor T7545 (BU508AF) becomes intermittently defective at program switch-over via "+" and "-" on user control.
• E-W output stage fails as soon as the appliance is switched on. Fuse 1534 (315mA) also fails. (extract of circuit diagram attached)
• Reduced vertical deflection. intermittently. (+ extract of circuit diagram) (service info for OTTOVERSAND -774274)
• Picture shifted to the right. Poor synchronisation. (extract of circuit diagram attached)
• Vertical foldover at bottom. (part of circuit diagram displayed)
• White screen. Flyback lines. Shuts down. after a few seconds. (extract of circuit diagram attached)
• The standby thyristor blows. (part of circuit diagram displayed)
• Picture is stretched - begins 5cms from bottom of the screen and is missing approx 1cm East/West. Appliance functions. (picture attached)
• Defective T7545. (extract of circuit diagram attached) (774274 tip from OTTOVERSAND)
• No TXT. Intermittent green dots or lines through picture. Black screen.
• Tuning drifts. after a while. (OTTOVERSAND - 774274 information)
• Picture fault in tuner and scart.
• Low brightness (even after turning up the preset in the U200 module).
• Vertical shaking. (+ extract of circuit diagram)
• Raster signal problem.
• No horizontal synchronisation. when cold. (+ extract of circuit diagram)
• Line transformer noise. (with circuit diagram extract) (774274 OTTOVERSAND repair tip)
• Excessive red.
• 148V does not go pass 20V. (picture attached)
• To give improved protection to the BUT11AF chopper transistor TR7665.
• Arcing. Picture tearing. Does not synchronise. (part of circuit diagram displayed)
• No synchronisation. intermittently. (part of circuit diagram displayed)
• Distorted TXT. at top.
• Does not switch to standby. Picture remains on screen. (part of circuit diagram displayed)
• High voltage unit is smouldered. (part of circuit diagram displayed)
• No colour in SECAM and PAL. Colour may appear slightly in SECAM when warm. (picture attached)
• S/C on deflection circuit. (part of circuit diagram displayed)
• TV starts, has raster but no image and no sound. Display shows "FO". (extract of circuit diagram attached)
• No sound when input connection made via 2 S-VHS phono sockets.
• Smoke from +12V resistor. (picture attached)
• F4 displayed. LED flashes green then orange for slightly less than a sec. (+ extract of circuit diagram)
• TXT has no function. TXT is activated but only dark screen.
• No synchronisation.
• No audio. (part of circuit diagram displayed)
• Dark screen and bright bar at the top. Clock is strange. Sound present. (with circuit diagram extract)
• 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. (extract of circuit diagram attached)
• Poor OSD. Unusual colour of some characters. (+ extract of circuit diagram)
• No HT output voltage of 148V. Voltage is present (approx. 158V) when disconnecting HT coils connector. (picture attached)
• No raster. (extract of circuit diagram attached)
• Replacement of TDA8451 (IC7305). (with circuit diagram extract)
• No colour in French standard. (part of circuit diagram displayed)
• Blue picture. after a while. (part of circuit diagram displayed)
• No functions. LED lit. . (with circuit diagram extract)
• BUT18AF fails repeatedly. (+ extract of circuit diagram)
• Switches off after operation time. LED goes off. Dead. Can be turned on via mains switch, then switches off again after operation time. (774274 tip from OTTOVERSAND)
• Value of 3525 in the vertical amplifier situated in front of the line transformer towards tube 4 beside cushion 3521.
• No E/W.
• PSU chirps. (extract of circuit diagram attached)
• Only pulsates once. Resistor R3661 in the 5V rail is burnt.
• Green LED does not light up. Power supply oscillates. (with circuit diagram extract)
• Black screen. intermittently. (+ extract of circuit diagram)
• Does not switch to standby. No functions. at switch-off. (picture attached)
• Brightness differences in picture. (part of circuit diagram displayed)
• PSU blown.
• Distorted audio.
• Loud noise. (part of circuit diagram displayed)
• No quick start pulse. (extract of circuit diagram attached)
• No functions. No button operation. (extract of circuit diagram attached)
• SOPS power supply repeatedly becomes defective. (+ extract of circuit diagram)
• Stuck on channel 1.
• Over oscillations below collector BUT18. (+ extract of circuit diagram) (service info for OTTOVERSAND -774274)
• Extra protection for chopper transistor TR7625 (BUT18AF). (+ extract of circuit diagram)
• Volume uncontrollable. No brightness control. (OTTOVERSAND - 774274 information)
• Works correctly but power supply BUT11 blows after 3 weeks. (part of circuit diagram displayed)
• Faulty TXT. (part of circuit diagram displayed)
• Causes for appliance going into safety mode.
• POR signal too low. (extract of circuit diagram attached)
• Buzzing from PSU. Motorboating noise from speakers. in standby. (picture attached) (774274 tips)
• Vertical size varies. Vertical jitter.
• BUT18 and rectifier bridge blow every two days even after modifications.
• Local dooming. (part of circuit diagram displayed)
• No reset.
• Dead. Humming noise from transformer. (+ extract of circuit diagram)
• Chroma fault in SECAM. (picture attached)
• Dark screen. in TXT.
• Picture is not linear. Black bar at bottom of picture. (extract of circuit diagram attached)
• If mains switched off when in standby, it does not start up again. Light off. (part of circuit diagram displayed) (774274 tips)
• Intermittent failure thyristor 6670 in STANDBY mode. (with circuit diagram extract)
• Protection of T7625 (BUT18AF). (with circuit diagram extract)
• PSU defective. (with circuit diagram extract)
• Loss of red, green or blue or excessive red, green or blue pictures.
• Slow start-up. (+ extract of circuit diagram)
• Vertical lines. on the left. Excessive brightness. (extract of circuit diagram attached) (774274 tip from OTTOVERSAND)
• Unstable AFC. Noisy picture. (with circuit diagram extract)
• No function. Buzzing noise. (+ extract of circuit diagram)
• Line output transformer does not start up. (picture attached)
• Dark picture. at bottom. Stretched picture. at top. (+ extract of circuit diagram)
• 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)
• Appliance starts intermittently with no standby. (picture attached)
• PSU repeatedly blows up. (with circuit diagram extract)
• Trapezoid picture. No E/W correction.
• No signal on the BUT11AF collector. (with circuit diagram extract)
• Coloured flash on channel change and VCR features. (part of circuit diagram displayed)
• Undefined Stereo-Mono switch over.
• Line pairing at top half of the picture (with circuit diagram extract)
• Faulty TXT. No TXT. intermittently.
• Control micro processors. (service info for OTTOVERSAND -774274)
• Intermittently screen blanks out. Random characters on screen.
• No picture. intermittently. (picture attached)
• Beam current dependent picture width fault. (part of circuit diagram displayed)
• Poor chroma identification in Pal/Secam. On channels 5, 6 or with VCR, blue or red bands. (extract of circuit diagram attached)
• Vertical collapse. after a few minutes. Audio OK . (service info for OTTOVERSAND -774274)
• White picture and no amplitude when cold. Picture pumping. (picture attached)
• Memory loss. (part of circuit diagram displayed)
• Horizontal size varies. (part of circuit diagram displayed)
• Primary PSU switches off. No standby LED. (service info for OTTOVERSAND -774274)
• Poor E/W adjustment. Picture is narrow in the middle. (with circuit diagram extract)
• Dark picture.
• Picture width changes according to its content. Linear distortion on right and left sides over 5cm (no ondulation).
• Excessive blue.
• Tripping. intermittently.
• OSD partly disappeared from the screen in BL sets. (with circuit diagram extract)
• Thyristor fails in PSU in standby. Otherwise appliance OK. (picture attached)
• BUT11AF S/C. (+ extract of circuit diagram) (service info for OTTOVERSAND -774274)
• Power supply falls to approx 40V AC on the variac. (part of circuit diagram displayed)
• Local dooming / PP-settings. (extract of circuit diagram attached)
• No start-up. Standby LED does not light. (picture attached)
• No horizontal deflection. (+ extract of circuit diagram)
• Start with interfering voltage. (part of circuit diagram displayed)
• Change in picture width depending on beam current. (extract of circuit diagram attached)
• E/W fault. No E/W correction. (+ extract of circuit diagram)
• Line end-stage has no function.
• No horizontal synchronisation. intermittently. (+ extract of circuit diagram)
• No adjustment from PSU possible. (with circuit diagram extract)
• One single line in the middle of the screen. (picture attached)
• Horizontal white line. (picture attached)
• No colour. Coloured bars in picture. OK after a few minutes. (part of circuit diagram displayed)
• No OSD. intermittently. (with circuit diagram extract)
• Error codes. (with circuit diagram extract) (774274 tips)
• One colour missing.
• Poor vertical linearity. Horizontal size varies. (picture attached)
• Line output transformer failure.
• Appliance runs ok, but if remote used to switch to standby, appliance goes dead. (part of circuit diagram displayed)
• Noise in audio.
• Low picture amplitude. Barrell-shaped picture. (picture attached)
• Poor frame linearity when cold. Picture is distorted vertically. (extract of circuit diagram attached)
• Vertical defective, too large line space in upper picture third. Linearity fault. (picture attached)
• No or poor synchronisation.
• No luminance. (with circuit diagram extract)
• +120V instead of +148V. (with circuit diagram extract)
• Appliance works fine for hours, but after switching off with the remote control the BUT18 and mains fuse go defective. (part of circuit diagram displayed)
• No power supply, protection circuit triggered. (picture attached)
• Supply transistor BUT18A becomes defective immediately after switching on the appliance. (picture attached) (service info for OTTOVERSAND -774274)
• Excessive horizontal size. Picture size varies with picture content. (with circuit diagram extract)
• TV blocks on 600MHZ. If you do a frequency search, it goes through all frequencies but does not find any channels. (with circuit diagram extract)
• Power supply crackles when power supply is low. (+ extract of circuit diagram) (OTTOVERSAND - 774274 information)
• No picture, teletext and sound are fine. (+ extract of circuit diagram)
• Connection of a loop system to the TV.
• After start up, PSU fails. (with circuit diagram extract)
• When cold, picture takes approx 2.5 mins to appear instead of 15 secs. When warm it takes 20 secs. (extract of circuit diagram attached)
• No picture, only audio via SCART. "Off air" picture displayed.. (with circuit diagram extract)
• Chopper transistor failure. (+ extract of circuit diagram)
• Frame shrinks horizontally when changing brightness. (extract of circuit diagram attached)
• Wavy picture. via AV.
• Black stripe on left edge of screen. Horizontal linearity is not correct. (with circuit diagram extract)
• No functions. intermittently.
• No light lit. (extract of circuit diagram attached)
• Switches immediately to protection mode. Functions OK when protection mode is switched off. (with circuit diagram extract)
• Vertical bars on channels 2 and 4 (+ extract of circuit diagram)
• Insufficient picture height which can be adjusted. Poor E/W.
• Poor NICAM sound from left hand speaker.
• Channel change impossible after a moment. Channel remains displayed and front LED becomes orange. (part of circuit diagram displayed)
• Tuning does not function, drifts, raster doubles up. Vertical sychronisation fault. (extract of circuit diagram attached) (774274 tip from OTTOVERSAND)
• 6cm black bar at bottom of picture.
• Connection of the loop system to the TV.
• Doesn't switch into standby. Green LED goes orange and flashes after pressing standby key .
• Search stops with good tuning.
• Distorted vertical lines at top and bottom of monoscope. E/W correction is faulty. (with circuit diagram extract)
• Doesn't function with dummy load. (+ extract of circuit diagram) (774274 OTTOVERSAND repair tip)
• No 9V. (+ extract of circuit diagram)
• No MONO audio. STEREO OK . (extract of circuit diagram attached)
• Finds emitters during channel search but does not stop. (extract of circuit diagram attached)
• When switching on, HV part hums. No control function is possible. (with circuit diagram extract)
• No colour. when cold. Poor colour. after warm-up. (extract of circuit diagram attached)
• No picture and sound. Buzz from power supply transformer.
• Line tearing and picture quiver at the edges.
• Picture leans too much to one side, Black line visible in the picture. (picture attached)
• Hum bar.
• Poor audio. only on certain channels. Crackling audio.
• Dead. Soft ticking sound.
• No output voltage.
• Shuts down. after a while. (extract of circuit diagram attached)
• Character error.
• BUT18, R3570 and F1534 blow. (+ extract of circuit diagram)
• Interference in picture. when cold. (extract of circuit diagram attached)
• Line output stage periodically fails. (with circuit diagram extract)
• Does not switch on from standby. LED blinks and goes off or changes to red and then no more functions.
• Poor field linearity.
• PSU transistor (BUT18A) becomes defective right after start-up.
• Severe crossover distortion in left channel.
• Humming noise from transformer. Line output transistor fails repeatedly. (part of circuit diagram displayed)
• Thyristor goes S/C when switched to standby. (part of circuit diagram displayed)
• Picture stretched at top, compressed at bottom with black bar. Picture improves when warm. (+ extract of circuit diagram)
• Problems with flof TXT. Cannot find p.811 in spite of it being sent out. TXT header remains with subtitling. (part of circuit diagram displayed)
• 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)
• Reduced vertical size. (picture attached)
• Stretched picture. at top. Reduced raster size. at bottom. (extract of circuit diagram attached)
• No sound or picture. Snowy screen (picture with test signal). Vertical interference bars. (+ extract of circuit diagram)
• No picture. in E-E. Audio OK .
• Fuse, bridge rectifier and BUT11 in PSU blow when in standby for 10 mins. (picture attached) (774274 tips)
• Fails in standby. (with circuit diagram extract)
• Incorrect reception. 33V ok. Picture ok in scart. (OTTOVERSAND - 774274 information)
• No functions. intermittently. LED blinks . Shuts down. (picture attached)
• Switching transistor of the SOPS power supply is defective. (+ extract of circuit diagram)
• No picture. Grey screen. Brightness control works normally. (with circuit diagram extract)
• No sound at some stations or audio failure. Via scart OK.
• BU508 blows one min after HT transistor (BU508AF) has been replaced. Picture OK during this one min.
• Vertical roll. when cold. (+ extract of circuit diagram) (774274 tips)
• Flyback lines. intermittently.
• Dark picture. intermittently. (part of circuit diagram displayed)
• Top of TXT waves from side to side. (with circuit diagram extract)
• No red, green and blue go through correctly. TEA5101A and TDA8390 have been changed. (with circuit diagram extract)
• Difficult to set up east/west and width controls. (picture attached)
• Appliance does not start up. Crackling. (+ extract of circuit diagram)
• Picture collapses. Pincushion distortion. (extract of circuit diagram attached)
• Channels run through. (with circuit diagram extract)
• Set not regulating after SOPS re-build of secondary side of PSU. (extract of circuit diagram attached)
• Vertical sync does not stop. (extract of circuit diagram attached)
• No start up. No front panel LED. Quiet noise from loud-speakers.
• Vertical roll. (extract of circuit diagram attached)
• Videotext has turbulent text content in upper section.
• Green spot after viewing a white object on the screen.
• Defective BUT.
• PSU has no function. (service info for OTTOVERSAND -774274)
• Capacitor 2545 in PSU burns. (with circuit diagram extract)
• Erratic functions. (with circuit diagram extract) (774274 tips)
• Appliance only functions until the 120V is reached with the variac. When the mains voltage is increased the appliance fails. (with circuit diagram extract)
• Pulsating, no start up. (+ extract of circuit diagram)
• Power supply fuse (18A) defective after 1 hr or less. (with circuit diagram extract)
• Intermittent power supply shut down, the picture goes off for a split second, the display flickering in sympathy.
• No picture. No brightness. No sound. Picture tube filament on.
• No colour. intermittently. (part of circuit diagram displayed)
• Protection for BUT18AF in PSU.
• Ghosts and poor colours. (extract of circuit diagram attached)
• No audio. intermittently. (with circuit diagram extract)
• Switches to protection mode. intermittently. (part of circuit diagram displayed)
• No sound in scart. Sound and picture via the tuner. The appliance does not pick up anything. (part of circuit diagram displayed)
• Purity fault. (with circuit diagram extract)
• Dark screen. LED is green. (with circuit diagram extract)
• Starts up again then clicks after a few mins. PSU faled again. (picture attached)
• The resistors 3661 and 3662 burn in standby, TS7625 is also defective sometimes. (extract of circuit diagram attached) (service info for OTTOVERSAND -774274)
• Slow start-up. Audio OK . (extract of circuit diagram attached)
• Faded picture. No contrast. (part of circuit diagram displayed)
• EHT problems. (+ extract of circuit diagram)
• Secondary voltages fall when loaded. (part of circuit diagram displayed)
• Undefined STEREO mono switch over. OSD mono STEREO display present. (picture attached)
• Does not switch to standby. Horizontal line. LED blinks . (with circuit diagram extract)
• When warm, picture foldover and the line BU blows. (+ extract of circuit diagram)
• BUT18AF (T7625) becomes defective in standby. (picture attached)
• S/C in 148V line. (extract of circuit diagram attached) (service info for OTTOVERSAND -774274)
• Starts, but only raster. Display shows "F3". (picture attached)
• Blurry picture.
• No chopper power supply. (extract of circuit diagram attached)
• Sometimes the BUT18AF goes defective. (extract of circuit diagram attached) (774274 tips)
• As the set warms up the picture flashes cyan every few seconds. (+ extract of circuit diagram)
• Line transistor 7545 fails after approx. 3 secs. (picture attached)
• Picture jitters. when cold. (part of circuit diagram displayed)
• No HV. (extract of circuit diagram attached)
• Snow in picture. (picture attached)
• No start-up from standby with RC.
• Lines on picture and sections blanked out. No TXT. (with circuit diagram extract)
• Discharging noise. via speakers.
• No deflection. Horizontal line.
• No sound or vision with F1 showing in the display.
• Picture is affected by frizzy lines occasionally with crackling noise in the speakers and perhaps with a burnt smell. (with circuit diagram extract) (OTTOVERSAND - 774274 information)
• No picture, only horizontal stripe on top. Picture appears only after a long while. Then picture collapses to a horizontal stripe in the centre.
• No tuning. intermittently. (picture attached)
• With high volume the appliance switches spontaneously to standby. (+ extract of circuit diagram)
• Frayed vertical lines. (+ extract of circuit diagram)
• Horizontal deflection BU fails after a few hours.
• End stage transistor BU508 fails repeatedly at switch on. (part of circuit diagram displayed)
• Contrast variations with subtitling in sets with BL-CRT. (with circuit diagram extract)
• Line transistor S/C.
• Sound was OK but there was no vision for the first 10 mins after switch on. (part of circuit diagram displayed) (774274 OTTOVERSAND repair tip)
• Nasal sound on channels 5 and 6. (+ extract of circuit diagram)
• Picture size varies with picture content. (picture attached)
• Quick diagnosis (part of circuit diagram displayed)
• No vertical synchronisation. (part of circuit diagram displayed) (774274 tips)
• Picture rolls. (picture attached)
• Weak contrast. No contrast control.
• Occasionally BUT18 blows in standby. (part of circuit diagram displayed)
• PSU blocking. (with circuit diagram extract)
• Functions but heat sink gets very hot after 10 mins. When put into standby, noise in the PSU. (picture attached)
• When switched to standby U1 becomes 60V. PSU goes to limiting. (+ extract of circuit diagram)
• Error message F7 appears in the first 2 mins. No operation possible. (picture attached)
• Set dead, power supply refuses to start. Also intermittent start and no standby (part of circuit diagram displayed)
• Horizontal output stage fails again after some time. (extract of circuit diagram attached) (774274 OTTOVERSAND repair tip)
• Colour blobs in the picture.
• Dark picture with thin vertical stripe in upper picture. (part of circuit diagram displayed) (774274 tips)
• Does not switch to standby. LED turns pink. Picture remains. Sound mutes. (+ extract of circuit diagram)
• BU508 blows after 1 or 2 days. (+ extract of circuit diagram)
• Horizontal shift no function.
• Protective circuit starts up. (extract of circuit diagram attached)
• After switch on the picture is sometimes shifted and a black horizontal bar appears in the centre of the picture. (part of circuit diagram displayed)
• PSU no function.
• Poor width regulation with brightness. (part of circuit diagram displayed)
• No teletext and OSD is hardly visible. The regular picture vibrates if appliance is switched to teletext. (part of circuit diagram displayed)
• Low sound on channel A. (picture attached)
• HV capacitor burns. (with circuit diagram extract)
• Fuse and PSU BU (BUT18AF) defective.
• 185V instead of 148V. When taking a measurement on collector of TZ 7652, bulb goes off. (with circuit diagram extract)
• BUT18AF is defective and is destroyed when appliance is switched on. (extract of circuit diagram attached) (774274 OTTOVERSAND repair tip)
• Line output transistor defective. (+ extract of circuit diagram)
• Poor RC sensitivity.
• Audio drop out or mute.
• Light green picture despite adjusting. Impossible to get red. (extract of circuit diagram attached)
• No blue. (+ extract of circuit diagram)
• No sound or picture. Appliance appears to be in AV. (+ extract of circuit diagram)
• Picture flickers intermittently, sound disappears. Picture reappears by itself, sound doesn't but can be activated with the RC.
• On the test picture, distorted, vertical lines at top and bottom of the screen. (picture attached)
• TS7625 (BUT 18AF) fails again. (with circuit diagram extract)
• No audio. F2 error.
• Switching transistor in power supply goes short circuit (BUT18).
• In VCR there are only chroma lines. (part of circuit diagram displayed)
• Dark picture. Picture rolls. Picture shifted to the left. Flickering picture. (picture attached)