774260 / OTTOVERSAND [TV]

• Black line matrix adjustment.
• Reduced horizontal size. (extract of circuit diagram attached)
• Changes to CRT base panel (1003).
• No +5V. (extract of circuit diagram attached)
• Line output transistor 7455 (BU508F; 4822 130 61265) burnt. (with circuit diagram extract)
• Blank screen (intermittently). (picture attached)
• No function. TXT, RGB, standby LEDs flashing. (774260 OTTOVERSAND repair tip)
• Black screen. when cold. Low brightness. No synchronisation. after a few minutes.
• Black screen.
• Replacement of the line stage transformer.
• LEDs blinking from time to time.
• E/W fault (intermittently). (with circuit diagram extract)
• Colour fault. Horizontal jitter.
• Mains diode blinks at start-up, whirr from PSU.
• No power supply or signal on the collector of the power supply BU. (part of circuit diagram displayed)
• First few minutes picture black/white, then colour OK. No sync.
• Poor variac control. Poor secondary power supply. Noisy power supply. (service info for OTTOVERSAND -774260)
• PIP is displaced.
• Chirping audio; +141 about 25 V. (extract of circuit diagram attached) (774260 tip from OTTOVERSAND)
• Sawtooth vertical lines. (with circuit diagram extract) (OTTOVERSAND - 774260 information)
• Dealer remote-control AV1375.
• White D settings.
• Low U1 value.
• TV appears to be in SAFETY mode. At start up standby LED flashes on and off. (picture attached)
• Irritating sound. (+ extract of circuit diagram)
• No audio. (part of circuit diagram displayed)
• Colour is next to picture content. Also picture jumps to the right.
• Power supply switch-transistor defective.
• At switch on starts up for 2 secs and the 4 LEDs flash after going into safety mode. (with circuit diagram extract)
• Excessive brightness. Strong colours.
• No or difficult operation of mains switch.
• No audio. Picture OK . (part of circuit diagram displayed)
• No start-up (intermittently). (774260 tip from OTTOVERSAND)
• Blown chopper.
• Hum in standby. (extract of circuit diagram attached)
• Trembling horizontally. After a few secs losing synchronisation.
• Error 2 on D2B VCR after switching on from standby. (with circuit diagram extract)
• Blue picture.
• Protection mode activated.
• Slow hiccup.
• No audio. intermittently. Crackling audio. intermittently.
• Dark picture. (+ extract of circuit diagram) (OTTOVERSAND - 774260 information)
• Only whistling. BU508 becomes hot.
• No synchronisation (when cold).
• Low audio. Whistling. (extract of circuit diagram attached)
• The +140V power supply is too high.
• Dead. Standby LED lit, teletext and RGB lights flashing. (part of circuit diagram displayed)
• Enter service mode.
• New audio processor units.
• Connection of a loop system to the TV.
• Set has new or repaired digi panel and gives error code ERROR 13.
• Poor vertical linearity. Noise bars. at bottom.
• All LEDs flash after brief start.
• Does not switch on. Safety mode is activated. "RGB" and "TXT" signs are lit. High-pitched buzz on sound.
• R3498 burnt.
• Squealing in raster scanning, sensitive to the torsion of the chassis.
• With the MENU key the function is carried out, but there is no OSD on the screen. Also no TT. Otherwise picture is normal.
• Picture has shifted upwards. When centered, top folds over. (extract of circuit diagram attached)
• No colour. No synchronisation. Intermittent audio. OK after a while .
• Phosphorous blocks the centre of the screen.
• Retail specialist RC 1375.
• No picture. Does not find the first station.
• +141 not present. (extract of circuit diagram attached)
• Irregular switching to protection mode (LED on in standby). (extract of circuit diagram attached)
• No bi-phonic sound from the loudspeaker.
• Picture trembles, beams in horizontal lines.
• Tuning drifts.
• The set shuts down or picture blanks and the OSD is displayed.
• Supplement PIP D16-2/D16-3.
• How to store middle value.
• Moire in picture.
• Only standby display flashes after start up. No picture. (774260 OTTOVERSAND repair tip)
• Squealing from PSU. (+ extract of circuit diagram)
• Only snow. Search only starts from 470 Mhz.
• Vertical collapse. (with circuit diagram extract)
• Oversaturated luminance and chroma. (774260 tip from OTTOVERSAND)
• Black and white picture. Snow increases.
• White screen. Switches to protection mode.
• TV cuts out after 2 minutes and the 4 front lights flash. Works in standby.
• Clock on BBC is blacked out.
• Error codes. (+ extract of circuit diagram)
• Sometime 10 cm wide stripes in picture. (774260 OTTOVERSAND repair tip)
• Goes into safety mode. At 180Vac. When voltage increased, scanning fault of black bars appear then goes into safety mode.
• Whistling from PSU. (part of circuit diagram displayed)
• Crackling audio. (part of circuit diagram displayed)
• The on-screen display (OSD) intermittently appears of its own accord and in addition the picture goes off intermittently.
• No E/W correction.
• Power supply BU blocks and shorts. If you test it the power supply capacitor loads then nothing.
• No OSD (intermittently). Blank screen (intermittently).
• Patterns in picture. via SCART.
• Disturbance. (+ extract of circuit diagram)
• Line output transistor fails repeatedly.
• No sync or colour at switch on from cold. May correct itself when warm.
• Snow in picture.
• Blows mains fuse after 1-2 hrs.
• No colour in PAL on PIP.
• No synchronisation.
• BUT12 in PSU blows again after a few days.
• Synchronisation instability in transmission. Correct on PIP. (+ extract of circuit diagram)
• Over-voltage circuit active. (with circuit diagram extract)
• Picture flickers in cold condition, after which picture geometry is incorrect and unadjustable.
• Quick hiccup. (extract of circuit diagram attached)
• Erratic functions.
• Banging sound when switching off. (extract of circuit diagram attached)
• Surround sound. (service info for OTTOVERSAND -774260)
• +5V power supply is sometimes incorrect when switching on. 15V voltage from the sops transformer pin 16 also too low then. (+ extract of circuit diagram)
• Starts up after three attempts.
• Red is dominant at start up. Picture becomes normal after about 10 secs. (part of circuit diagram displayed)
• Connection of a loop system to the TV.
• Black screen (intermittently). (picture attached)
• When starting, R3498 burns.
• Defective switching transistor in SOPS supply.
• Crackling noise in left loudspeaker. (picture attached)
• Goes into safety mode. When TV started up again at 180Vac, it has a narrowed picture and if picture is bright or if ac is increased then TV goes into safety mode.
• Searches for channels continuously. (part of circuit diagram displayed)
• No functions. Standby LED flashes .
• Purity spot.
• No colour. Poor synchronisation. (extract of circuit diagram attached)
• Power supply hiccups, because the power supply voltage is greater than 141V.
• No colour (after a few seconds).
• Blank raster. Pincushion distortion. Audio OK .
• The output transistor of the power supply is defective. BUT11AF of BUT18AF of 2SC3973B.
• No PIP.
• No picture but there is sound. Picture is fine (intermittently) via scart. (+ extract of circuit diagram)
• No colour or sync at switch on from cold. It may correct itself when warm.
• Blue picture (intermittently).
• Picture, colour, synchro or OSD fault.
• EHT works at start up then cuts off. (774260 OTTOVERSAND repair tip)
• No colour with VCR.
• Excessive horizontal size. (with circuit diagram extract) (OTTOVERSAND - 774260 information)
• No picture and no sound. Goes into protective switching. All front LEDs are flashing.
• Stuck in standby. (picture attached)
• No vertical synchronization with NV-J35EV.
• Standby LED flashes. (extract of circuit diagram attached)
• Low contrast. (picture attached) (774260 OTTOVERSAND repair tip)
• Dead.
• Wow in audio.
• No colour. when cold. OK after a while .
• Coloured spot.
• No functions. (extract of circuit diagram attached)
• Colour lines. White adjustment cannot be made correctly. Picture geometry is incorrect and cannot be adjusted. Picture twitches in cold condition on the left and right.
• LED flashes and blocks when switching on.
• Standby, On and RGB LEDs flash after one sec. Usual checks carried out yield no results.
• No picture (intermittently).
• E/W fault. (extract of circuit diagram attached)
• Negative picture.
• Vertical line on the right of the picture in ext. 2 mode. (extract of circuit diagram attached)
• Distorted audio. (part of circuit diagram displayed)
• Error 9. RGB and STD-BY LED flash. Scanning present, blocked functions, no video.
• Switches to standby after a while. Error 05 on display. RGB LED is lit.
• Power supply hums.
• Excessive brightness. Flyback lines. (part of circuit diagram displayed)
• Value of R3270, on the power supply primary on pin 5 of the CNX83A.
• Changing the audio processing unit circuit.
• Incorrect vertical linearity.
• Frizzy lines on the verticals when picture is quite white.
• Moire on channel 5 (175 MHz).
• Picture loss with flash but picture immediately returns. ERROR 9 on display. Fault reoccurs after a few mins, ERROR 5 on display. RGB is flashing in display.
• Picture too big. at bottom.
• Pincushion distortion.
• Switches to standby.