C228 / GEC [TV]

• No picture. (picture attached)
• Dead. (with circuit diagram extract)
• Excessive vertical size.
• Switches on automatically from stand-by
• No picture. No sound. Only noise, station tuning is not possible or some of the baud switching voltages are released at the same time.
• The vertical deflection IC TDA 1872 A fails after a few days. (picture attached)
• Switching power supply unit TDA4600 does not switch correctly. (extract of circuit diagram attached)
• Picture is folded down at the top.
• Synchronisation disturbances.
• Sporadically there is no picture content. After switching off then on again in most cases picture content returns. (part of circuit diagram displayed)
• Small, flat picture.
• Dead no standby LED at switch on.
• Picture occasionally or always becomes wavy. (picture attached)
• No colour PB.
• No picture, no sound intermittently.
• No reception, only noise.
• No AV possible.
• No memory possible. (extract of circuit diagram attached)
• Picture has shifted, the operation indication flickers. (part of circuit diagram displayed)
• Vertical amplitude changes in AV operation, by program search or also by poor aerial signal.
• Beam limiter does not function.
• Sound modification.
• Occasionally the picture is blue, red or green. (part of circuit diagram displayed)
• Poor picture covered with green stripes.
• No start-up. when cold. (+ extract of circuit diagram) (C228 tips)
• After storage has been extended the screen display is faulty.
• Intermittently dark picture.
• After switch on picture shakes up and down. Improves after some time. (extract of circuit diagram attached)
• OIRT standard reception.
• Picture trembling. (extract of circuit diagram attached)
• No functions. Display OK .
• Automatic channel switching. (+ extract of circuit diagram)
• Varying grey scale.
• Segment generator SA5243.
• Pin occupation: Scart plugs/sockets.
• No function, starts up briefly. No display.
• No vertical synchronisation. (C228 tips)
• Dead. No display. (C228 tip from GEC)
• Teletext runs through.
• Picture rolling [ no vertical sync ].
• Intermittently no line sync and high oscillation. Line transistor fails if it remains too long in this state.
• There is a fault during station search. (picture attached)
• High HT.
• No beam limiter.
• Picture has shifted to the right. (part of circuit diagram displayed)
• No picture, only flyback lines. Sound is present.
• Cable tuner table. (service info for GEC -C228)
• Occasionally line tearing. (part of circuit diagram displayed)
• TDA1872 defective.
• Foldover at bottom. (picture attached)
• Squealing noise. (picture attached)
• No picture. No audio. (extract of circuit diagram attached)
• Interference lines.
• Picture has shifted to the left.
• Reduced vertical size.
• No functions.
• Problems using the remote control (IRtransmitter). (picture attached)
• No signal. (+ extract of circuit diagram)
• Intermittent weak contrast.
• No function. Programme display is OK.
• Differences in tuner.
• Makes a "BLUPP" noise after switch on then no function.
• Dead. Standby LED doesn't light.
• The picture is sometimes dark.
• No TXT.
• Line pulling at top of picture.
• The picture is too bright. (+ extract of circuit diagram) (service info for GEC -C228)
• Shortly after switch on the picture goes darker, the colour and contrast become weak. After a short or long time the picture is correct again.
• Picture has shifted at top of the picture.
• Does not start or only starts after several attempts.
• Picture runs through or jumps vertically.
• TXT mod. with VT-decoder II. (GEC - C228 information)
• Brightness and contrast switch off.
• Vertical collapse. (extract of circuit diagram attached)
• Dark picture. intermittently. (extract of circuit diagram attached)
• The power supply unit is in open circuit.
• Switches OFF by self after couple of mins of good function. Will function again for same period, if it is switched ON again after becoming cold. (picture attached)
• Fitting of a different tuner: The manufacturer has fitted different tuner types to chassis C8500: - NSF-tuner - Loewe-tuner (with adapter board)
• When supply voltage U110V is adjusted correctly the picture width is too big (profi M15).
• The IR receiver is blocked.
• Excessive HT. (picture attached)
• Vertical collapse. intermittently. (with circuit diagram extract)
• Hum in audio. (part of circuit diagram displayed)
• Hum bars in upper picture part.
• The sound is correct up to level 25. If you increase the volume, there is no sound. (part of circuit diagram displayed)
• No colour. at top.
• Brightness level varies (C228 GEC repair tip)
• Intermittent light/dark.
• Operation voltage adjustment "Profi M21".
• Picture is too dark. After increasing the contrast no picture content. (+ extract of circuit diagram)
• Programmes switching by themselves.
• The picture jitters and the sound hums.
• Crackling noise during switching off.
• Picture contrast is poor.
• No start up. Standby LED not lighting. (+ extract of circuit diagram) (C228 tip from GEC)
• No colour PB when the appliance is used as a monitor for the Commodore C64.
• Dark picture. (extract of circuit diagram attached)
• No E/W raster control.
• Noise in audio.
• Frame foldover at top of scan. (C228 GEC repair tip)
• Hum and jitter. (part of circuit diagram displayed)
• Height is reduced and linearity is poor. (part of circuit diagram displayed)
• The horizontal driver transistor fails. (part of circuit diagram displayed) (GEC - C228 information)
• Standby Led flashes. Switches over independently, drifts off tune etc. (part of circuit diagram displayed)
• No vertical deflection. (+ extract of circuit diagram)
• Picture jitters/hum on picture/channel numbers flicker/low sound/intermittent RC and front button functions.
• Harder and harder to start TV then won't start up at all. (extract of circuit diagram attached)
• No function. Standby display is not lit.
• Vertical line at the left hand picture edge.
• Screeching sound.
• The picture is dark and the sound hums.
• SECAM-transcoder modification.
• No BTX-operation possible (Lotus).
• Malfunction because the electrolytics have lost their capacity.
• The line amplitudes jump. (extract of circuit diagram attached)
• Dead, display shows 88.
• H-driver transformer and bias resistor R534 defective and fail again after replacement.
• Replace TDA872A with TDA1675.
• The picture is noisy. (picture attached)
• Linearity fault in upper third of picture. Several white stripes.
• Fitting a Lotus-BTX decoder.
• The storage is lost (multitel 21).
• No picture content on the screen, also analogue functions do not work (but display counts). Appliance cannot be switched to stand-by.
• The power supply unit does not start up (part of circuit diagram displayed)
• No picture. Picture remains dark even when AV signal is available.
• Dead, no U8 or U5 supplies
• Dead, standby light initially comes on then goes off. (part of circuit diagram displayed)
• Intermittent picture (beam lim).
• Changing the chassis on Profi M15.
• No frame scan. (picture attached)
• No operation (intermittently). (extract of circuit diagram attached)
• The top right corner is dark. (extract of circuit diagram attached)
• Lines in picture.
• Variable 5V supply.
• The picture is distorted.
• Poor contrast and white pictures show colour moire during CCVS operation of a Commodre C64 on TV's and monitors.
• No luminance. (part of circuit diagram displayed)
• The picture is blurred. (picture attached)
• Modification set SECAM-L converter.
• Storage extension (only for multitel and TV10).
• Very bright picture with flyback lines and E/W fault.
• No picture content. Flyback lines. RGB output signals are missing on the TDA. TDA is ok.
• Colour disappears then reappears after a short time.
• No picture, only a vertical blank. (extract of circuit diagram attached)
• Deflection noise. (C228 tip from GEC)
• Scan is non-linear. (extract of circuit diagram attached)
• No station tuning possible. Only noise. (with circuit diagram extract)
• Station tuning is not possible. (picture attached)
• No user control when switching on. Picture jitters and everything ok again after a few mins. Then crackle in the sound and it becomes considerably quieter.
• Brightness levels go up and down.
• The picture only appears 4 minutes after switching on.
• Blurred picture. Picture becomes sharp after a while and vertical picture parts jitter.
• No colour. Picture OK . (GEC - C228 information)
• Intermittent audio. (extract of circuit diagram attached)
• Fizzle in PSU.
• Narrow picture and tube looks flat. Slight whistle. (part of circuit diagram displayed)
• During VCR PB the picture amplitude jumps, especially during special function (picture search, freeze frame etc.) (part of circuit diagram displayed)
• Switch over problems.
• Distorted picture. Volume varies. (picture attached)
• The lines appear torn.
• Monitor operation (MCP114/ME) with Commodore VC64 shows onion pattern. (extract of circuit diagram attached)
• Change of audio IC TDA4190.
• TV-standards.
• Dark picture at switch on. It becomes bright very slowly (thermic dependence), sound OK.
• Reduced width and bright raster
• IR receiver reacts to external light.
• Incorrect height on picture and non linear.
• Function faults (picture sways, power supply block is open circuit, picture trembles).
• Picture is blurred and almost negative (dark).
• High brightness.
• The RGB output shows problems.
• No HV.
• Moire effect on the picture.