704028 / OTTOVERSAND [TV]

• BU508, Q7593 and Q7594 are defective. (part of circuit diagram displayed)
• BUT11 in power supply defective after few days, or when in standby. (with circuit diagram extract)
• No luminance. (picture attached)
• Excessive vertical size. (extract of circuit diagram attached)
• Flickering text and apparent tuning drift.
• No HV. (part of circuit diagram displayed)
• Adjustment black line matrix.
• Switches to safety mode at approx. 110 V mains voltage. (extract of circuit diagram attached)
• Line transformer noise. (picture attached)
• No tuner reception. Search display functions well but appliance does not pick up any channel. (extract of circuit diagram attached)
• Picture size varies with picture content. (+ extract of circuit diagram) (704028 OTTOVERSAND repair tip)
• BUT18AF is defective and is destroyed when appliance is switched on. (+ extract of circuit diagram)
• Squealing from PSU. after start-up. (+ extract of circuit diagram)
• Defective T7545. (with circuit diagram extract)
• Humming noise from transformer. Line output transistor fails repeatedly. (with circuit diagram extract)
• Picture and sound drop out. Appliance jumps to channel 1.
• Page 811 appears spontaneously. (picture attached)
• Modification: Colour decoder chip IC7260.
• The appliance functions correctly in standard B,G but the sound hums in F standard. (part of circuit diagram displayed)
• Vertical foldover at top and bottom. (with circuit diagram extract)
• When switching on, HV part hums. No control function is possible. (with circuit diagram extract)
• Sound is noisy.
• Line BU508blows after 3 days. (+ extract of circuit diagram)
• At start up goes immediately into standby. 12C BUS blocks at 5V. (picture attached)
• No adjustment from PSU possible. (+ extract of circuit diagram)
• Type of transistor 7594 and value of resistor R3596.
• Single dark lines in picture centre.
• TXT has no function. TXT is activated but only dark screen.
• No picture. Audio and OSD OK .
• Colour flickering during video editing.
• No horizontal synchronisation. when cold. (with circuit diagram extract)
• U system only 5V instead 148V. (part of circuit diagram displayed)
• Thyristor fails in PSU in standby. Otherwise appliance OK. (extract of circuit diagram 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. (with circuit diagram extract)
• Horizontal, bright line.
• Dark screen and bright bar at the top. Clock is strange. Sound present. (with circuit diagram extract) (OTTOVERSAND - 704028 information)
• The screen is white and there is no sound. The line transistor blows after 5 minutes. (picture attached)
• Red standby light then dead at switch on. TV starts up on the variac. (extract of circuit diagram attached)
• No picture. TXT OK . (part of circuit diagram displayed)
• Intermittent black picture with TXT. Intermittent TXT in picture.
• If mains switched off when in standby, it does not start up again. Light off. (with circuit diagram extract)
• Faded picture. No contrast. (with circuit diagram extract)
• 148=68V. (with circuit diagram extract)
• Quick diagnosis (part of circuit diagram displayed)
• No E/W.
• BUT18AF fails repeatedly. (picture attached)
• Picture is affected by frizzy lines occasionally with crackling noise in the speakers and perhaps with a burnt smell. (picture attached)
• No colour. Coloured bars in picture. OK after a few minutes. (+ extract of circuit diagram)
• Searches for channels continuously. (part of circuit diagram displayed)
• PSU has no function.
• No teletext and OSD is hardly visible. The regular picture vibrates if appliance is switched to teletext. (+ extract of circuit diagram)
• Blank screen. Audio OK .
• Vertical roll. (+ extract of circuit diagram)
• Defective line transistor. (part of circuit diagram displayed)
• No reset.
• The sound fails: after changing over to a different channel, the sound is back. (part of circuit diagram displayed)
• Appliance runs ok, but if remote used to switch to standby, appliance goes dead. (part of circuit diagram displayed)
• Error message F7 appears in the first 2 mins. No operation possible. (part of circuit diagram displayed)
• No colour in French standard. (+ extract of circuit diagram)
• Crackling from FBT and black vertical bars on screen for a few secs after start up. (picture attached)
• Picture is too big or too small during horizontal amplitude adjustment.
• R3368 and R3369 burn up at switch on. (+ extract of circuit diagram)
• Coloured flash on channel change and VCR features. (picture attached)
• Replacing TDA2579. (extract of circuit diagram attached)
• Takes approx 1 minute to come on, will not switch to standby, sound mutes but pulsating picture remains. (extract of circuit diagram attached)
• Loss of colour or no colour.
• Intermittent power supply shut down, the picture goes off for a split second, the display flickering in sympathy.
• Switches off after operation time. LED goes off. Dead. Can be turned on via mains switch, then switches off again after operation time. (704028 tips)
• Chopper transistor (BUT18AF) fails if appliance is switched on from standby. (part of circuit diagram displayed)
• +148V drops to 100V occasionally according to the tube output. (with circuit diagram extract) (service info for OTTOVERSAND -704028)
• Ragged picture.
• Erratic functions. (extract of circuit diagram attached)
• Undefined Stereo Mono switchover.
• Dead. Red LED blinks. (part of circuit diagram displayed)
• Line output transformer does not start up. (+ extract of circuit diagram)
• Does not go into standby. LED becomes orange but picture remains. (extract of circuit diagram attached) (704028 tips)
• S/C in 148V line. (extract of circuit diagram attached)
• Picture is too wide or too small when adjusting horizontal size.
• PSU varies according to picture content when warm. (picture attached)
• Memory loss. (+ extract of circuit diagram)
• BUT18AF blows in standby on the collector. (with circuit diagram extract)
• One colour missing. (704028 tip from OTTOVERSAND)
• BUT18 blows at 100V on the variac.
• +16V flashover. (part of circuit diagram displayed)
• Power supply is often destroyed when left in standby. (picture attached)
• No audio. intermittently. (+ extract of circuit diagram)
• Functions but heat sink gets very hot after 10 mins. When put into standby, noise in the PSU. (picture attached)
• Cramped at bottom with slight foldover.
• 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.
• No picture, no sound. TV starts up and tube lights up. (picture attached) (service info for OTTOVERSAND -704028)
• 148V measures 60V. (picture attached)
• Appliance hums in Standby.
• No picture. No brightness. No sound. Picture tube filament on.
• Switches off during operation. When it is switched on again crackling is heard from HT. (+ extract of circuit diagram)
• BU508 defective after switching channel (when appliance is warm). (part of circuit diagram displayed)
• Does not store settings. (part of circuit diagram displayed) (service info for OTTOVERSAND -704028)
• Line BU keeps failing. (picture attached)
• Only grey picture after being struck by lightning. TXT also runs. (with circuit diagram extract)
• Ballooning and incorrect picture linearity.
• Light green picture despite adjusting. Impossible to get red. (+ extract of circuit diagram)
• No sound or vision with F1 showing in the display.
• Impossible to adjust horizontal shift of picture using R3595. (picture attached) (service info for OTTOVERSAND -704028)
• Picture leans too much to one side, Black line visible in the picture. (+ extract of circuit diagram)
• The front control panel changes channels upwards but not downwards. All other functions OK.
• Shuts down. after a while. (+ extract of circuit diagram)
• Service mode
• Luminance takes a long time to appear. Distorted picture, focus pot does not react sufficiently. (part of circuit diagram displayed)
• EXT1 switchover is defective, terrestrial program remains.
• With Blackline picture tubes occasional or random OSD insertion.
• Ghosts and poor colours. (part of circuit diagram displayed)
• Chopper and line output transistors S/C. (+ extract of circuit diagram)
• Frayed vertical lines. (picture attached)
• Vertical bar. on the left. (extract of circuit diagram attached)
• On the test picture, distorted, vertical lines at top and bottom of the screen. (picture attached)
• Interference in picture. No picture. No audio. (extract of circuit diagram attached)
• Starts up again then clicks after a few mins. PSU faled again. (with circuit diagram extract)
• Horizontal stripe. intermittently. (extract of circuit diagram attached)
• No function, only hums. (part of circuit diagram displayed)
• BUT18AF (T7625) becomes defective in standby. (extract of circuit diagram attached)
• Set can be turned off with RC, but not turned on. S.B. LED blinks. (with circuit diagram extract)
• Smoke from +12V resistor. (part of circuit diagram displayed)
• Supply transistor BUT18A becomes defective immediately after switching on the appliance. (+ extract of circuit diagram)
• No picture. No audio. OK via SCART . (picture attached)
• Horizontal-BU 508AF has a s/c. After replacing this fails again after a few seconds. (with circuit diagram extract)
• Distorted TXT. at top.
• Slow start-up. (extract of circuit diagram attached)
• Flyback lines. intermittently.
• No OSD. intermittently. (extract of circuit diagram attached)
• No function. On start-up easy chirp is audible. (extract of circuit diagram attached)
• No picture, only horizontal stripe on top. Picture appears only after a long while. Then picture collapses to a horizontal stripe in the centre.
• Hum bar.
• E-W output stage fails as soon as the appliance is switched on. Fuse 1534 (315mA) also fails. (picture 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) (service info for OTTOVERSAND -704028)
• Thyristor TR7670 breaks down after two days (loose contacts). (picture attached)
• Power supply breaks down. (part of circuit diagram displayed)
• Control micro processors. (704028 tips)
• Fuse, bridge rectifier and BUT11 in PSU blow when in standby for 10 mins. (part of circuit diagram displayed) (704028 tips)
• The standby thyristor blows. (part of circuit diagram displayed)
• 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.
• In Standby BUT18AF (T7625) becomes defective.
• Starts, but only raster. Display shows "F3". (+ extract of circuit diagram)
• Distorted picture. (picture attached)
• Weak contrast. No contrast control. (service info for OTTOVERSAND -704028)
• Reduced vertical size at bottom.
• Over-voltage circuit active. (extract of circuit diagram attached)
• Ragged verticals.
• No sound at some stations or audio failure. Via scart OK.
• Nasal sound on channels 5 and 6. (with circuit diagram extract)
• No audio. when cold. No OSD. when cold. (with circuit diagram extract) (704028 tip from OTTOVERSAND)
• Poor frame linearity when cold. Picture is distorted vertically. (+ extract of circuit diagram)
• Lines in picture. on the left.
• Fails occasionally.
• Videotext has turbulent text content in upper section.
• T7637 blown. (+ extract of circuit diagram)
• No picture. Audio OK . (part of circuit diagram displayed)
• Thyristor pos. 6670 fails. (picture attached)
• Appliance starts up with the variac until it reaches 100V and then the appliance fails. (extract of circuit diagram attached)
• Green spot after viewing a white object on the screen.
• Strange noise in loudspeakers. (with circuit diagram extract)
• Does not switch to standby. No functions. at switch-off. (+ extract of circuit diagram)
• Goes dead when switched to standby by RC. No standby LED. Switching on and off at mains, restores normal functions (picture attached)
• No 9V. (with circuit diagram extract)
• Picture varies with beam current. (extract of circuit diagram attached)
• Poor field linearity.
• PSU repeatedly blows up. (with circuit diagram extract)
• Top of TXT waves from side to side. (extract of circuit diagram attached)
• Snow on screen and no reception. F4 displayed on screen. Green LED lit. (+ extract of circuit diagram)
• No sound when input connection made via 2 S-VHS phono sockets.
• Extra protection for chopper transistor TR7625 (BUT18AF). (extract of circuit diagram attached)
• Local dooming, especially with high contrast. (with circuit diagram extract) (704028 OTTOVERSAND repair tip)
• Wavy picture. via AV.
• Blurry picture.
• Character error.
• After approx 10 minutes startup picture randomly disappears then reappears. No TEXT, only a mass of lines.
• BUT18 is defective. (extract of circuit diagram attached)
• PSU repair. (picture attached)
• No PAL chroma.
• Switching transistor T7625 has failed. (with circuit diagram extract)
• Dead. Error code F1 displayed.
• Dark picture. at bottom. Stretched picture. at top. (extract of circuit diagram attached) (OTTOVERSAND - 704028 information)
• No TXT. Intermittent green dots or lines through picture. Black screen. (OTTOVERSAND - 704028 information)
• HT varies intermittently.
• When warm, picture foldover and the line BU blows. (with circuit diagram extract)
• Darker bar on left of screen. (with circuit diagram extract)
• No vertical synchronisation. (extract of circuit diagram attached)
• Over oscillations below collector BUT18. (picture attached)
• Crackle a few seconds after Power On. (with circuit diagram extract)
• Vertical stripes at left picture edge via channel 2 and 4. (picture attached) (704028 tips)
• Buzzing from PSU. in standby. (extract of circuit diagram attached)
• No switching into CCIR standard. Display ok in SECAM and PAL/SECAM. (part of circuit diagram displayed)
• Line output transistor fails repeatedly. after start-up.
• No functions. Red LED blinks. (picture attached)
• 6cm black bar at bottom of picture.
• Poor chroma identification in Pal/Secam. On channels 5, 6 or with VCR, blue or red bands. (picture attached)
• Tuning unstable. (extract of circuit diagram attached) (service info for OTTOVERSAND -704028)
• Dark screen. No OSD. (picture attached)
• Set does not start-up after implementing SOPS kit. (+ extract of circuit diagram)
• Contrast adjustment inoperative, colour streaks. (with circuit diagram extract) (704028 tips)
• The line transistor blows after 5 minutes. (part of circuit diagram displayed)
• Orange spots on the right of the screen.
• No functions. LED lit. . (with circuit diagram extract)
• Poor audio. only on certain channels. Crackling audio.
• No chopper power supply. (extract of circuit diagram attached) (service info for OTTOVERSAND -704028)
• No synchronisation.
• Green picture. after a while. (extract of circuit diagram attached)
• Vertical defective, too large line space in upper picture third. Linearity fault. (+ extract of circuit diagram)
• 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)
• Volume uncontrollable. No brightness control. (704028 tip from OTTOVERSAND)
• Intermittently BUT18 defective after switching on. (with circuit diagram extract)
• Dark picture. Picture rolls. Picture shifted to the left. Flickering picture. (part of circuit diagram displayed)
• PSU becomes defective after switch on via mains switch.
• F5 displayed on a screen corner. Occasionally channels switch over to channel 1 or TV switches off.
• Picture shakes. (service info for OTTOVERSAND -704028)
• Does not stop at stations. Station search OK. (extract of circuit diagram attached)
• Horizontal white line. (extract of circuit diagram attached)
• Only pulsates once. Resistor R3661 in the 5V rail is burnt.
• With high volume the appliance switches spontaneously to standby. (picture attached)
• Occasionally picture seems to be coded on all the channels especially when cold. (picture attached)
• Dark background and a band of colour on the right. (part of circuit diagram displayed) (service info for OTTOVERSAND -704028)
• Green LED does not light up. Power supply oscillates. (part of circuit diagram displayed)
• Reduced format, flyback line slightly visible. (part of circuit diagram displayed)
• No output voltage.
• PSU fails after a short time (S/C of BUT18AF). (part of circuit diagram displayed)
• Does not switch to standby. Horizontal line. LED blinks . (picture attached) (service info for OTTOVERSAND -704028)
• Microprocessor/eprom screening plate. (with circuit diagram extract) (service info for OTTOVERSAND -704028)
• Phase fault. (+ extract of circuit diagram)
• Shuts down. after a few minutes. (extract of circuit diagram attached)
• Line output transformer failure. (OTTOVERSAND - 704028 information)
• Primary PSU switches off. No standby LED.
• Dark picture with thin vertical stripe in upper picture. (+ extract of circuit diagram)
• 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. (with circuit diagram extract)
• Horizontal output stage fails again after some time. (extract of circuit diagram attached)
• Wavy picture. at top.
• Vertical foldover. (part of circuit diagram displayed) (service info for OTTOVERSAND -704028)
• Sound only at program switch-over. (+ extract of circuit diagram)
• Picture takes a long time to appear (several mins). (part of circuit diagram displayed)
• Pulsating, no start up. (picture attached)
• The resistors 3661 and 3662 burn in standby, TS7625 is also defective sometimes. (part of circuit diagram displayed)
• When switching on the appliance when it's cold, it takes about 35 seconds before the picture appears. (part of circuit diagram displayed)
• Humming noise from transformer. in standby. (extract of circuit diagram attached)
• Transistor 7545 (BU508AF) is blown. (extract of circuit diagram attached)
• No horizontal synchronisation. (part of circuit diagram displayed) (OTTOVERSAND - 704028 information)
• No picture and no sound. (with circuit diagram extract)
• Black screen. No brightness. Audio OK . (+ extract of circuit diagram)
• Interference in picture. when cold. (extract of circuit diagram attached)
• Displays error code F4. When you switch to standby again, F4 appears again. LED flashes. Only noise. (extract of circuit diagram attached)
• Protection of T7625 (BUT18AF). (with circuit diagram extract)
• 185V instead of 148V. When taking a measurement on collector of TZ 7652, bulb goes off. (+ extract of circuit diagram)
• Grey screen. (with circuit diagram extract)
• Trips. (extract of circuit diagram attached)
• 148V at approx 30V. (part of circuit diagram displayed)
• BUT transistor becomes S/C either at switch on or after a certain period of time. (+ extract of circuit diagram)
• Flashing picture. (picture attached)
• Chroma fault in SECAM. (+ extract of circuit diagram)
• Value of 3525 in the vertical amplifier situated in front of the line transformer towards tube 4 beside cushion 3521.
• Reduced vertical deflection. intermittently. (extract of circuit diagram attached)
• Faulty TXT. No TXT. intermittently.
• Lacks contrast. No reaction on the plus or minus key of the contrast button. Other commands are ok.
• To give improved protection to the BUT11AF chopper transistor TR7665.
• Connection of the loop system to the TV.
• Chopper transistor failure. (with circuit diagram extract)
• Dark streak on screen.
• Ticking sound. (extract of circuit diagram attached)
• Poor horizontal centering. (with circuit diagram extract)
• No start up. No front panel LED. Quiet noise from loud-speakers.
• Dark screen. No picture. No RC functions. (with circuit diagram extract)
• Secondary voltage cannot be adjusted lower than 160V. PSU however can be regulated with this voltage. (704028 tip from OTTOVERSAND)
• Colour blobs in the picture.
• No picture. intermittently. (picture attached)
• Appliance only functions until the 120V is reached with the variac. When the mains voltage is increased the appliance fails. (picture attached)
• Undefined Stereo-Mono switch over.
• No picture, only audio via SCART. "Off air" picture displayed.. (extract of circuit diagram attached)
• Vertical foldover at bottom. (extract of circuit diagram attached)
• BU508AF fails repeatedly. (with circuit diagram extract)
• Starts without picture and audio then switches off after a few seconds.
• When switched to standby U1 becomes 60V. PSU goes to limiting. (extract of circuit diagram attached)
• No start-up. Standby LED does not light. (picture attached)
• No functions. intermittently.
• No brightness. No audio. Raster OK . (picture attached)
• Vertical shaking. (part of circuit diagram displayed)
• Low brightness (even after turning up the preset in the U200 module).
• Tuning search does not stop.
• Secondary voltages fall when loaded. (extract of circuit diagram attached)
• OSD partly disappeared from the screen in BL sets. (picture attached)
• No picture. Grey screen. Brightness control works normally. (extract of circuit diagram attached) (704028 tips)
• Horizontal deflection BU fails after a few hours.
• When warm, there is a raster fault on the left. (extract of circuit diagram attached)
• PSU blocking. (extract of circuit diagram attached)
• Switches immediately to protection mode. Functions OK when protection mode is switched off. (extract of circuit diagram attached) (OTTOVERSAND - 704028 information)
• No tuning. intermittently. (part of circuit diagram displayed)
• Slight E/W distortion. (extract of circuit diagram attached)
• Spare part info: values of C2546, C2547 and C2545, located on collector of T7545. (+ extract of circuit diagram)
• Line output transformer overheats. (+ extract of circuit diagram)
• Slow start-up. Switches to standby. (extract of circuit diagram attached)
• No channels.
• Usys voltage of line output stage collapses to approx 48V. (picture attached)
• Line end stage U/syst collapses to approx. 48V. (+ extract of circuit diagram)
• Black stripe on left edge of screen. Horizontal linearity is not correct. (with circuit diagram extract)
• Blows chopper transistor at switch on.
• PSU blown.
• Picture flickers the first 5 minutes. Gradually becomes less but very visible in the dark portions of the screen. (704028 tip from OTTOVERSAND)
• Noise in picture. (with circuit diagram extract)
• Local dooming. (picture attached)
• Very loud sound at switch but normal at previous switch off. Adjustment OK.
• No control signal to IC7470 (TDA) and no line scanning. (extract of circuit diagram attached)
• Set dead, power supply refuses to start. Also intermittent start and no standby (+ extract of circuit diagram)
• Stuck on channel 1.
• Dead. intermittently.
• Change in picture width depending on beam current. (extract of circuit diagram attached)
• Frame shrinks horizontally when changing brightness. (picture attached)
• Destruction of the power supply BU. (+ extract of circuit diagram) (704028 OTTOVERSAND repair tip)
• No colours. After approx an hour colours appear with fluctuations. (with circuit diagram extract) (704028 OTTOVERSAND repair tip)
• Start with interfering voltage. (with circuit diagram extract)
• Local dooming / PP-settings. (part of circuit diagram displayed)
• F4 displayed. LED flashes green then orange for slightly less than a sec. (+ extract of circuit diagram)
• Vertical size varies. Vertical jitter. (OTTOVERSAND - 704028 information)
• Spare part info: Value of C2546 and C2545 near line output transformer.
• Switches off intermittently. Standby LED (red-green) flashes. Picture drops out. (part of circuit diagram displayed)
• Operating voltage stabilises at 50V. (extract of circuit diagram attached)
• Arcing. Picture tearing. Does not synchronise. (+ extract of circuit diagram)
• Shuts down. LED is green. (part of circuit diagram displayed)
• PSU transistor (BUT18A) becomes defective right after start-up.
• E/W fault. No E/W correction. (extract of circuit diagram attached)
• No tuning. when cold. (part of circuit diagram displayed)
• No sound in scart. Sound and picture via the tuner. The appliance does not pick up anything. (+ extract of circuit diagram)
• Mono/stereo display error. (with circuit diagram extract)
• Occasionally standby thyristor 6670 S/C. (+ extract of circuit diagram) (OTTOVERSAND - 704028 information)
• Finds emitters during channel search but does not stop. (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. (+ extract of circuit diagram)
• Switching transistor of the SOPS power supply is defective. (extract of circuit diagram attached)
• Brightness differences in picture. (+ extract of circuit diagram)
• Set not regulating after SOPS re-build of secondary side of PSU. (part of circuit diagram displayed)
• +120V instead of +148V. (part of circuit diagram displayed)
• No raster. (picture attached)
• No LED lit. (extract of circuit diagram attached)
• No sound. No response to commands from both RC and front panel. Error message F2 on screen. Picture ok. (part of circuit diagram displayed) (704028 OTTOVERSAND repair tip)
• Line pairing at top half of the picture (part of circuit diagram displayed)
• Low picture amplitude. Barrell-shaped picture. (with circuit diagram extract)
• LED lights up for a moment. TV is dead. Light on the power supply sometimes functions. (+ extract of circuit diagram)
• Poor picture. via tuner. (with circuit diagram extract)
• Colour flickering during video editing.
• 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)
• Buzzing from PSU. Motorboating noise from speakers. in standby. (with circuit diagram extract)
• Flash over on picture tube print.
• Power supply fuse (18A) defective after 1 hr or less. (extract of circuit diagram attached) (704028 tip from OTTOVERSAND)
• Distorted vertical lines at top and bottom of monoscope. E/W correction is faulty. (picture attached)
• No horizontal deflection. (with circuit diagram extract)
• No MONO audio. STEREO OK . (+ extract of circuit diagram) (704028 tip from OTTOVERSAND)
• Picture flickers intermittently, sound disappears. Picture reappears of itself, sound doesn't but can be activated with the RC.
• Sometimes the BUT18AF goes defective. (part of circuit diagram displayed)
• No vertical deflection. Horizontal line. (+ extract of circuit diagram)
• Error codes. (extract of circuit diagram attached) (service info for OTTOVERSAND -704028)
• 5.1V incorrect. (part of circuit diagram displayed)
• Appliance works fine for hours, but after switching off with the remote control the BUT18 and mains fuse go defective. (+ extract of circuit diagram)
• Line output transistor fails repeatedly. intermittently. (+ extract of circuit diagram) (service info for OTTOVERSAND -704028)
• Power supply problem. (+ extract of circuit diagram)
• Vertical bars on channels 2 and 4 (+ 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)
• Does not switch on from standby. LED blinks and goes off or changes to red and then no more functions.
• Vertical deflection is defective. Picture present, after a short time a line appears then picture disappears. (picture attached)
• Sound and picture pulsating (2 times a sec) only via tuner. (704028 tips)
• No power supply, protection circuit triggered. (picture attached)
• No quick start pulse. (with circuit diagram extract)
• Horizontal line in the middle of screen.
• No functions. No button operation. (part of circuit diagram displayed)
• Intermittently screen blanks out. Random characters on screen.
• Connection of a loop system to the TV.
• No red. (extract of circuit diagram attached)
• Tripping. intermittently.
• Blows components. at start-up. (picture attached)
• Picture fault in tuner and scart.
• Capacitor 2545 in PSU burns. (+ extract of circuit diagram) (OTTOVERSAND - 704028 information)
• Picture looks as if it were encoded (like on C+ channel). Sound is OK.
• Power supply crackles when power supply is low. (extract of circuit diagram attached)
• Defective SOPS. (+ extract of circuit diagram)
• No picture and sound. Buzz from power supply transformer.
• No vertical deflection. intermittently. (picture attached)
• Picture jitters. when cold. (with circuit diagram extract)
• Intermittent line and raster synchro. (with circuit diagram extract)
• Switch on during standby only functions when RC is very close to the appliance.
• East/west raster distortion: width and shaping control do not function.
• Black screen. intermittently. (extract of circuit diagram attached)
• No picture. Bright raster. Flyback lines. Audio OK . (picture attached)
• No synchronisation. intermittently. (with circuit diagram extract)
• No sound, even with in or out scart.
• Doesn't function with dummy load. (picture attached) (704028 tips)
• EHT problems. (+ extract of circuit diagram)
• Dark picture. intermittently. (picture attached) (704028 OTTOVERSAND repair tip)
• Horizontal size varies. (part of circuit diagram displayed)
• Line output transistor fails repeatedly. (part of circuit diagram displayed)
• TS7625 (BUT 18AF) fails again. (+ extract of circuit diagram)
• The output transistor of the power supply is defective. BUT11AF or 2SC3973B.
• Picture jitters and vertical bars distorted on cross-hatched pattern. Blue horizontal bars. (part of circuit diagram displayed)
• TV starts, has raster but no image and no sound. Display shows "FO". (with circuit diagram extract)
• Dark screen. LED is green. (+ extract of circuit diagram)
• Picture pulsates on white background.
• Picture shifted to the right. Poor synchronisation. (picture attached)
• References for transistors 7615 and 7612.
• Transformation in K' (only for stereo versions). (extract of circuit diagram attached)
• No start-up from standby with RC.
• Set functions with the variac but BUT11AF blows when appliance is plugged in. (+ extract of circuit diagram) (service info for OTTOVERSAND -704028)
• Local dooming - spots in the picture.
• 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. (extract of circuit diagram attached)
• Dark picture. No picture. via SCART. No audio. via SCART. No RC functions. (+ extract of circuit diagram)
• No E/W correction. (with circuit diagram extract)
• Blank raster. No tuning.
• Line output transistor defective. (with circuit diagram extract)
• Low contrast. (picture attached)
• Contrast variations with subtitling in sets with BL-CRT. (with circuit diagram extract)
• Narrowing of line and frame then flashing of the picture. Screen turns dark after 10 mins. Picture ok when cold. (with circuit diagram extract)
• Vertical roll. when cold. (part of circuit diagram displayed)
• No picture. when cold. Audio OK . (part of circuit diagram displayed)
• In standby tries to operate spontaneously. (with circuit diagram extract)
• Blue picture. after a while. (picture attached)
• No switch on. Noise from loud-speakers and smell of burning. (+ extract of circuit diagram)
• Goes to blank screen with unlocked TXT lines when TXT selected.
• Distorted picture. at top. (part of circuit diagram displayed)
• White picture with flyback lines. (+ extract of circuit diagram)
• Picture linearity error. Picture has shifted towards top. Picture folds over at the bottom.
• No picture or narrow streak after warm-up. (picture attached)
• BUT11AF S/C. (part of circuit diagram displayed)
• No signal on the BUT11AF collector. (+ extract of circuit diagram)
• Picture is stretched - begins 5cms from bottom of the screen and is missing approx 1cm East/West. Appliance functions. (extract of circuit diagram attached) (OTTOVERSAND - 704028 information)
• Line transistor 7545 fails after approx. 3 secs. (with circuit diagram extract)
• Intermittent memory problem.
• Protective circuit starts up. (with circuit diagram extract)
• Power supply BU blows after a few days.
• Causes for appliance going into safety mode.
• Hum in audio. in standby. (with circuit diagram extract) (service info for OTTOVERSAND -704028)
• Black horizontal lines. (extract of circuit diagram attached)
• SOPS power supply repeatedly becomes defective. (part of circuit diagram displayed)
• Very low secondary voltages. (+ extract of circuit diagram)
• Red LED blinking for 3 secs.
• No start-up. intermittently. (extract of circuit diagram attached) (704028 OTTOVERSAND repair tip)
• Discharging noise. via speakers.
• Black screen. Audio OK . (picture attached) (704028 tip from OTTOVERSAND)
• Stretched picture. at top. Reduced raster size. at bottom. (extract of circuit diagram attached)
• Width of picture pumps according to picture content and narrows with a strong white. (part of circuit diagram displayed)
• POR signal too low. (picture attached) (704028 tips)
• Switches to protection mode. intermittently. (picture attached)
• White picture and no amplitude when cold. Picture pumping. (part of circuit diagram displayed)
• No synchronisation. when cold. (part of circuit diagram displayed)
• Buzz in audio. (picture attached)
• Intermittent picture size.
• Dead. Humming noise from transformer. (+ extract of circuit diagram)
• As the set warms up the picture flashes cyan every few seconds. (picture attached)
• White area visible on right side of screen in EXT1 mode of BL sets. (part of circuit diagram displayed)
• BU508 blows one min after HT transistor (BU508AF) has been replaced. Picture OK during this one min.
• Excessive brightness. (extract of circuit diagram attached)
• Loud noise. (+ extract of circuit diagram)
• Unadjustable horizontal centering. (extract of circuit diagram attached)
• Intermittent failure thyristor 6670 in STANDBY mode. (extract of circuit diagram attached) (704028 tips)
• Picture takes some time to appear. Dark screen then TV stops. Round colour spot which slowly disappears. (+ extract of circuit diagram) (OTTOVERSAND - 704028 information)
• Low sound on channel A. (with circuit diagram extract)
• Trapezoid picture. No E/W correction.
• Switching transistor in power supply goes short circuit (BUT18).
• Doesn't switch into standby. Green LED goes orange and flashes after pressing standby key .
• Vertical lines. on the left. Excessive brightness. (picture attached)
• No regulation. (part of circuit diagram displayed)
• Vertical shift incorrect, after replacing a 28" BL-CRT. (part of circuit diagram displayed)
• Horizontal stripe. (with circuit diagram extract)
• Incorrect reception. 33V ok. Picture ok in scart.
• No picture. No display. Erratic functions. (part of circuit diagram displayed)
• BUT11 becomes defective after 3 days of use. (part of circuit diagram displayed)
• PSU chirps. (picture attached)
• Blows components. after a few minutes. (with circuit diagram extract)
• Jagged picture. (with circuit diagram extract)
• No E/W correction. Pincushion distortion. (part of circuit diagram displayed)
• Transistor T7545 (BU508AF) becomes intermittently defective at program switch-over via "+" and "-" on user control.
• Difficult to set up east/west and width controls. (with circuit diagram extract)
• No colours at start up 50% of the time on satellite channels. OK in HF and VCR. (+ extract of circuit diagram)
• No audio. (extract of circuit diagram attached)
• Frizzy lines on the picture. (704028 OTTOVERSAND repair tip)
• Power supply BU and fuse are defective when TV started up from standby. Occurs every week or fortnight and is very variable. (with circuit diagram extract)
• No audio. F2 error.
• Intermittently blown Wickman fuse 1534.
• Difficult horizontal and vertical adjustment and sawtooth at the side. (with circuit diagram extract)
• After a few secs in standby, 7625 and fuse destroyed. (with circuit diagram extract)
• When switched off with RC, does not switch on again and LED remains off. (extract of circuit diagram attached)
• Appliance fails and later comes back unprompted. (picture attached)
• 148V does not go pass 20V. (picture attached)
• No deflection. Horizontal line.
• Line BU blows after a moment. (+ extract of circuit diagram) (704028 tip from OTTOVERSAND)
• Line output stage periodically fails. (extract of circuit diagram attached)
• The horizontal centering cannot be adjusted correctly. It may have shifted after the appliance has warmed up.
• Blocked. (picture attached)
• No red, green and blue go through correctly. TEA5101A and TDA8390 have been changed. (+ extract of circuit diagram)
• Raster signal problem.
• Cannot be switched to standby. After the first attempt appliance is blocked. (+ extract of circuit diagram)
• No colour in SECAM and PAL. Colour may appear slightly in SECAM when warm. (with circuit diagram extract)
• Poor NICAM sound from left hand speaker.
• Blows chopper transistor when switching on with remote. (picture attached)
• Replacement of TDA8451 (IC7305). (part of circuit diagram displayed)
• PSU voltage low at 20V. (extract of circuit diagram attached)
• Vertical synchronisation fault when hot and presence of white line, then picture disappears (picture attached)
• Power supply falls to approx 40V AC on the variac. (part of circuit diagram displayed)
• White picture on the right side in EXT1 mode.
• Blows chopper transistor. (picture attached)
• Line output transistor fails repeatedly. after a while. (part of circuit diagram displayed)
• BUT11A fails after operating for long time. (extract of circuit diagram attached)
• CTV functions one day. (extract of circuit diagram attached)
• Top of text is ringing. Intermittent text.
• Too high power supply. (part of circuit diagram displayed)
• Poor regulation. (with circuit diagram extract)
• No contrast control. (part of circuit diagram displayed)
• Reduced horizontal size. Vertical foldover. in the centre. (+ extract of circuit diagram)
• No functions. intermittently. LED blinks . Shuts down. (extract of circuit diagram attached)
• Power supply is low when warm. (with circuit diagram extract) (OTTOVERSAND - 704028 information)
• Coloured spots in picture (local dooming). (+ extract of circuit diagram)
• One single line in the middle of the screen. (part of circuit diagram displayed)
• Fuse and PSU BU (BUT18AF) defective.
• No colour. (extract of circuit diagram attached)
• Negative picture when cold and sometimes intermittently. (with circuit diagram extract)
• Switches to protection mode. (part of circuit diagram displayed)
• No or poor synchronisation.
• No picture. after a while. White screen. (+ extract of circuit diagram)
• Picture is not linear. Black bar at bottom of picture. (+ extract of circuit diagram) (OTTOVERSAND - 704028 information)
• Tuning drifts. after a while.
• Intermittently dead. (part of circuit diagram displayed)
• No horizontal synchronisation. intermittently. (extract of circuit diagram attached)
• No picture. F4 lights up in the display. (part of circuit diagram displayed)
• Does not decode Canal Plus no the sound. Green LED flashes. (picture attached)
• Appliance works for 4 hours and then cuts out completely.
• Noise in audio. (OTTOVERSAND - 704028 information)
• Purity fault. (part of circuit diagram displayed)
• Power supply failure. (picture attached)
• Audio drop out or mute.
• No sound or picture. Appliance appears to be in AV. (+ extract of circuit diagram)
• Search stops with good tuning.
• Mains fuse O/C and BUT S/C. (extract of circuit diagram attached)
• Picture flickers for approx 5 mins after switch on when cold, then everything normal as soon as appliance reaches room temperature.
• PCD8582 and X2402 memory. (part of circuit diagram displayed)
• Appliance does not start up. Crackling. (picture attached)
• Thyristor goes S/C when switched to standby. (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. (with circuit diagram extract) (service info for OTTOVERSAND -704028)
• Poor linearity. (picture attached)
• Poor picture synchronisation during station switch-over. Vertical picture jitter, runs through, poor picture via RF or EXT. (extract of circuit diagram attached)
• Power supply too low (70V). (part of circuit diagram displayed)
• Vertical collapse. (+ extract of circuit diagram)
• Diode D6653 installation sops kit.
• Colour bar at right of screen. (picture attached)
• TXT problem. Some characters do not display.
• No picture. in E-E. Audio OK .
• PSU defective. (picture attached)
• Horizontal shift no function.
• HV capacitor burns. (part of circuit diagram displayed)
• Hum in audio. (+ extract of circuit diagram)
• PSU no function.
• Intermittent colour.
• Horizontal end stage BU508AF short circuits after different playing times. (part of circuit diagram displayed)
• No picture. when cold. (picture attached) (service info for OTTOVERSAND -704028)
• Slow start-up. Audio OK . (picture attached)
• No colour. when cold. Poor colour. after warm-up. (part of circuit diagram displayed) (704028 tips)
• BUT18, R3570 and F1534 blow. (with circuit diagram extract)
• No button operation. intermittently. (part of circuit diagram displayed)
• Poor RC sensitivity.
• Does not switch to standby. Picture remains on screen. (picture attached)
• Reduced raster size. (+ extract of circuit diagram)
• The power supply BUT18AF shorts after operating for 5 hours. (picture attached)
• Excessive horizontal size. Picture size varies with picture content. (extract of circuit diagram attached)
• In VCR there are only chroma lines. (with circuit diagram extract)
• Vertical deflection is defective. A piece is missing at the bottom and at the top the lines are pulled apart. (+ extract of circuit diagram)
• After start up, PSU fails. (extract of circuit diagram attached)
• Repeated failure of CRT.
• Reduced horizontal size. after a while. (extract of circuit diagram attached)
• Dead set caused by lightning damage. (part of circuit diagram displayed)
• 100V power supply is approx 35V. (extract of circuit diagram attached)
• Dark picture. Audio OK . (picture attached)
• Dark screen. in TXT.
• Loud noises from speaker. Picture OK .
• No sound or vision, display going to F1.
• Chopper transistor (BUT18AF), rectifier diodes and mains fuse become defective instantly. (part of circuit diagram displayed)
• Beam current dependent picture width fault. (extract of circuit diagram attached)
• Picture shifted vertically. (704028 tip from OTTOVERSAND)
• R3653 burns. (with circuit diagram extract)
• Severe crossover distortion in left channel. (704028 tip from OTTOVERSAND)
• Snow in picture. (picture attached)
• With Blackline picture tubes in the EXT1-Mode a white field is visible on the right side.
• No picture, no sound, no display, 148V is reduced to approx 50V.
• Lines on picture and sections blanked out. No TXT. (extract of circuit diagram attached)
• No sound or picture. Snowy screen (picture with test signal). Vertical interference bars. (+ extract of circuit diagram)
• Intermittently green "F5" on screen, thereby very dark picture or TXT appears. (extract of circuit diagram attached)
• Defective BUT.
• Connection of a loop system to the TV.
• When put into standby tube remains lit. Picture cuts out normally. (picture attached)
• S/C in EHT stage. (with circuit diagram extract)
• Picture green and purple in the E/W direction.
• BUT18 and rectifier bridge blow every two days even after modifications.
• No blue. (part of circuit diagram displayed)
• Vertical sync does not stop. (extract of circuit diagram attached)
• Does not switch to standby. LED turns pink. Picture remains. Sound mutes. (picture attached)
• Intermittently line tearing in picture at the edges.
• Blows fuse. after a few hours. (with circuit diagram extract)
• No colour. intermittently. (part of circuit diagram displayed) (service info for OTTOVERSAND -704028)
• S/C on deflection circuit. (picture attached)
• Excessive blue.
• White screen.
• Replacing the EEPROM. (+ extract of circuit diagram) (OTTOVERSAND - 704028 information)
• Appliance starts intermittently with no standby. (picture attached)
• Line transistor S/C.
• Snow on screen and no tuner reception. F3 displayed on screen. Green LED on.
• Faulty TXT. (with circuit diagram extract)
• Reduced vertical size. (with circuit diagram extract)
• Horizontal line. in the centre. (with circuit diagram extract)
• No function. Buzzing noise. (with circuit diagram extract)
• PSU fuse blown. (+ extract of circuit diagram)
• 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. (part of circuit diagram displayed)
• Insufficient picture height which can be adjusted. Poor E/W.
• Works correctly but power supply BUT11 blows after 3 weeks. (picture attached)
• No TXT, just lines on screen.
• 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. (picture attached)
• TV blocks on 600MHZ. If you do a frequency search, it goes through all frequencies but does not find any channels. (picture attached)
• How to check the power supply without blowing BUT18AF.
• Vertical foldover at top.
• Channel change impossible after a moment. Channel remains displayed and front LED becomes orange. (extract of circuit diagram attached)
• Red light flashes for approximately 3 seconds then zero.
• Switches on for a few secs with extreme brightness. No picture. Sound OK. Goes into safety mode immediately after.
• Mono/Stereo-indication switches. (extract of circuit diagram attached)
• Line tearing and picture quiver at the edges.
• Horizontal line. Audio OK . (with circuit diagram extract)
• Power supply blows when put into standby. (extract of circuit diagram attached)
• Protection mode activated.
• High voltage unit is smouldered. (extract of circuit diagram attached)
• No audio. after a while. (with circuit diagram extract)
• Dead. Soft ticking sound.
• Pincushion distortion at each side. Adjustment potentiometer does not correct fault. (extract of circuit diagram attached)
• No switch on. Red LED flickers for 3 seconds.
• White screen. Flyback lines. Shuts down. after a few seconds. (part of circuit diagram displayed)
• No linearity. (extract of circuit diagram attached)
• S/C in line output stage (7645). (extract of circuit diagram attached)
• Picture collapses. Pincushion distortion. (part of circuit diagram displayed)
• No HT output voltage of 148V. Voltage is present (approx. 158V) when disconnecting HT coils connector. (+ extract of circuit diagram)
• Loss of red, green or blue or excessive red, green or blue pictures.
• White square in a corner of the screen. (extract of circuit diagram attached)
• Line BU blows after operating for 3-5 mins. (picture attached)
• Poor E/W adjustment. Picture is narrow in the middle. (extract of circuit diagram attached)
• BUT18 fails repeatedly. (part of circuit diagram displayed)
• Line tearing and picture twitching at the sides of the picture.
• Red picture. after a while. (+ extract of circuit diagram)
• 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)
• Egg-shaped picture, picture is pushed upwards. Underneath 5cm black bar. (with circuit diagram extract)
• After about 3 to 4 weeks of regular play, the BUT18 and the main fuse automatically blow. (+ extract of circuit diagram)
• Distorted audio.
• Retrace lines. intermittently.
• Tuning does not function, drifts, raster doubles up. Vertical sychronisation fault. (with circuit diagram extract)
• Shuts down. after a while. LED blinks .
• Unstable AFC. Noisy picture. (extract of circuit diagram attached)
• Vertical collapse. intermittently. (+ extract of circuit diagram)
• The bottom half of the raster is missing, with the top cramped.
• Tuning search does not stop when appliance has found a station. (part of circuit diagram displayed)
• Channels run through. (+ extract of circuit diagram) (service info for OTTOVERSAND -704028)
• Occasionally BUT18 blows in standby. (extract of circuit diagram attached)
• Dark screen. via tuner. Audio and OSD OK . (with circuit diagram extract)
• Defective standby thyristor (SFOR5D43). (with circuit diagram extract)
• Red flashing when changing channels with VCR playback in the still, search modes or edit points in own recordings. (picture attached)
• No start-up. (picture attached)
• Sound drops out.
• No functions. Power LED lit . (picture attached)
• On channels 2 and 4 vertical lines on the left hand side of the picture.
• No light lit. (extract of circuit diagram attached)
• Functions with an automatic transformer up to 110, 120V. (picture attached)
• 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 attached) (704028 OTTOVERSAND repair tip)
• No picture. on lower half screen. (part of circuit diagram displayed)
• No picture, teletext and sound are fine. (picture attached)
• Picture stretched at top, compressed at bottom with black bar. Picture improves when warm. (part of circuit diagram displayed)
• BU508 blows after 1 or 2 days. (picture attached)
• 17V instead of 140V. (extract of circuit diagram attached)
• Undefined STEREO mono switch over. OSD mono STEREO display present. (with circuit diagram extract)
• Excessive red. (704028 tip from OTTOVERSAND)
• S/C from point 18 at line transformer to the ground. (picture attached)
• Line end-stage has no function.
• 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. (with circuit diagram extract)
• Poor OSD. Unusual colour of some characters. (with circuit diagram extract)
• Poor width regulation with brightness. (picture attached)
• Fails in standby. (extract of circuit diagram attached)
• Can not be switched off in Standby position. When starting, LED becomes orange and blows. (with circuit diagram extract) (704028 tips)
• Picture flickers intermittently, sound disappears. Picture reappears by itself, sound doesn't but can be activated with the RC. (704028 tips)
• Picture width changes according to its content. Linear distortion on right and left sides over 5cm (no ondulation). (704028 tip from OTTOVERSAND)
• Reduced horizontal size. intermittently.
• Poor vertical linearity. Horizontal size varies. (with circuit diagram extract)
• Oval picture.
• Poor vertical linearity. Reduced vertical deflection. (part of circuit diagram displayed) (OTTOVERSAND - 704028 information)
• Protection for BUT18AF in PSU.
• The picture is indented (horizontally).
• Regulation does not function without a load. (picture attached)
• Lower picture third is dark. Upper picture is dispersed. (with circuit diagram extract)
• TV blocked in F3.
• No TXT. (with circuit diagram extract)
• No audio. Picture OK . (with circuit diagram extract)
• Power supply goes into safety mode and crackles. (extract of circuit diagram attached)
• Dark picture.
• Sound was OK but there was no vision for the first 10 mins after switch on. (+ extract of circuit diagram)
• U148V measures 20V.
• Voltage too low. (extract of circuit diagram attached) (OTTOVERSAND - 704028 information)
• Low contrast. in TXT. (+ extract of circuit diagram)
• No tuning.
• No start-up with mains switch after switched off from standby.
• Vertical collapse. after a few minutes. Audio OK .
• TV locked by and keys.
• Poor regulation of the power supply. (with circuit diagram extract) (704028 OTTOVERSAND repair tip)
• No operation. (part of circuit diagram displayed)
• Vertical linearity is upwards a little sharp. Picture has shifted upwards. (part of circuit diagram displayed)
• Picture rolls. (extract of circuit diagram attached)
• End stage transistor BU508 fails repeatedly at switch on. (with circuit diagram extract)