TV2903 / COMET [TV 36/37 (34-36) cm picture]

• Shuts down. intermittently. PSU pulsates.
• Installation menu.
• Motorboating noise in audio. (TV2903 tip from COMET)
• No picture. after a few minutes. Audio OK .
• Horizontal line. in the centre.
• Starts up twice then dead.
• Noise in picture.
• PSU chirps every second after switch on, LED blinks. No other function.
• Excessive horizontal size. after a few hours.
• No function, only standby LED is red.
• Tripping.
• Torn picture. Vertical foldover. depending on picture content.
• Stuck in standby.
• Switches off by itself.
• No switch on. Ticking from loudspeaker.
• Reduced horizontal size. No E/W correction.
• Poor synchronisation.
• Switches to standby. after a while.
• No colour and ragged verticals.
• Picture increases gradually. Linearity error and stripes in upper picture area. (TV2903 tips)
• At switch on LEDs flash. Set dead when current is switched on. Stays in standby mode.
• Beep after start-up.
• Disable child lock. (TV2903 tips)
• Shuts down.
• Reduced vertical size.
• Fuse FP01 has blown (COMET - TV2903 information)
• Switches to standby. intermittently.
• No picture , only lines, via AV socket.
• No start-up.
• No synchronisation. OSD and TXT OK .
• Horizontal linearity fault.
• Power supply hiccups.
• Brightness and contrast vary about 10mins, then picture flashing then goes out. Remains green raster and intermittently retrace lines.
• No power up. PSU whistles every second.
• Dark picture. Audio OK .
• Dead with a slight squealing sound, which gets louder.
• No colour.
• Switches to protection mode. LED flashes repeatedly twice.
• No functions. after lightning strike.
• Interference in picture.
• Squealing about once a second.
• Excessive horizontal size. No E/W correction.
• FBT flashover.
• Lines across screen then set displays a bright white raster and turned itself OFF. When switching ON again it just trips.
• Cycles on/off.
• Bright white picture.
• No function, red LED is on, sometimes only faint noise from PSU.
• No function. PSU ticks.
• No picture. Bright raster. Flyback lines.
• Enable child lock.
• Drops out.
• No start-up. LED is red .
• Focus cannot be set well. It takes a long time before picture appears.
• No raster.
• Comes on for a short time. Burning smell.
• Smoking.
• Flyback lines.
• Low voltages.
• Black band on picture with tearing effect. Intermittently picture flutters on bright scenes. Arcing noise.
• Reduced vertical deflection.
• Reduced vertical and horizontal size.
• No picture. intermittently. Audio OK .
• After 10mins. picture flashes and cuts out.
• Horizontal line.
• No start-up (intermittently).
• No horizontal deflection.
• PSU pulsates. LED flickers .
• Trips (after start-up). (TV2903 COMET repair tip)
• Picture shifted horizontally. Horizontal foldover.
• Starts up three times then switches off.
• Switches on. Raster appears and switches to standby after 2-3 secs.
• No channel storing. only on certain channels.
• Dead. LED is red .
• No picture. via SCART.
• Frame has shifted downwards approx 1".
• Peeping sound.
• First no colours/interference, then no function.
• Power supply hiccups, LED flashing.
• Dead. Power LED is red.
• Stuck in standby. Green LED fades out when switched on.
• Image white and with flyback lines and then horizontal pulsating.
• Blows fuse. at start-up.
• Protective circuit starts up, if appliance is switched on again when warm. Red LED blinks. (service info for COMET -TV2903)
• Sawtooth pattern when cold. Best visible in 4:3 mode. OK after a few minutes.
• Ragged picture.
• Flickering picture. intermittently.
• Squealing from PSU.
• RV38 value.
• Shuts down. after start-up. No vertical deflection.
• Mains switch does not lock.
• E/W fault.
• No function. Standby LED does not light up. Power supply squeaks once a second.
• Line output transistor fails repeatedly.
• No E/W correction.
• Changing sound to UK standard (6MHz).
• Cannot be switched on from standby. Switches by itself to standby or sound mutes.
• Attempts to start up twice and switches off.
• Protection mode activated. LED blinks .
• Blank raster.
• Tries to start 2 times then switches to standby.
• No start-up from standby.
• Dead. Standby LED does not light.
• Flickering picture. Audio OK .
• All channels up to CH51 are tuned, otherwise no function.
• Bright picture.
• No picture. Audio OK .
• Flashing picture. after a few minutes.
• Switches to standby (after start-up).
• White line in the bottom half of the picture.
• Enter service mode.
• Switches to protection mode.
• Switches off by itself. after start-up.
• Reduced horizontal size. E/W distortion.
• Resistors RD06 and RD17 burnt. (TV2903 tip from COMET)
• E/W fault. intermittently.
• Line tearing.
• Bright raster. Retrace lines.
• Bright white raster with flyback lines after start up, then goes to standby.
• No start-up after switched off from RC. Noise from PSU in standby.
• No start-up. Green LED flashes .
• Continuously blinking red LED.
• No operation.
• Blows fuse.
• Line output transistor S/C. (service info for COMET -TV2903)
• Dead.
• White screen. Flyback lines.
• No E/W correction. Cannot be adjusted in the service menu.
• Stuck in standby. when cold.
• Dead. Standby LED flashes .
• Fails after start-up.
• Smearing in picture.
• Picture fails intermittently, line tearing in part and sound disturbs.
• No audio. via SCART.
• Reduced horizontal size. Foldover in centre of picture.
• No horizontal or SDA/SCL pulses after 10 seconds.
• No picture. after a while.
• Horizontal collapse.
• Shuts down. after start-up.
• No picture. No audio.
• No tuning. (TV2903 tips)
• No functions.
• No line drive.
• Switches to protection mode (after start-up).
• Switches off by itself. intermittently.
• Trips. (service info for COMET -TV2903)
• Noise and whistle from the SOPS trafo.
• Blue display.
• Excessive brightness. Flyback lines. Audio OK .
• Doesn't read DVD's.
• Blank raster. Retrace lines. Audio OK .
• Vertical collapse.
• Picture is only red or green or blue with flyback lines.