63KV5697 / MEDIATOR [TV]

• Does not switch to standby. No functions. at switch-off. (part of circuit diagram displayed)
• Power supply too low (70V). (part of circuit diagram displayed)
• Humming noise from transformer. Line output transistor fails repeatedly. (+ extract of circuit diagram)
• Operating voltage stabilises at 50V. (+ extract of circuit diagram)
• Occasionally standby thyristor 6670 S/C. (with circuit diagram extract)
• Occasionally picture seems to be coded on all the channels especially when cold. (picture attached) (service info for MEDIATOR -63KV5697)
• Slow start-up. Switches to standby. (part of circuit diagram displayed)
• Intermittent colour.
• Darker bar on left of screen. (picture attached)
• Insufficient picture height which can be adjusted. Poor E/W.
• Power supply is often destroyed when left in standby. (with circuit diagram extract)
• Intermittent power supply shut down, the picture goes off for a split second, the display flickering in sympathy.
• No vertical deflection. intermittently. (with circuit diagram extract)
• Distorted picture. (picture attached)
• Line tearing and picture quiver at the edges.
• BUT18 fails repeatedly. (+ extract of circuit diagram)
• 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)
• Dark screen. in TXT.
• Set can be turned off with RC, but not turned on. S.B. LED blinks. (picture attached)
• Strange noise in loudspeakers. (+ extract of circuit diagram)
• Picture becomes smaller and smaller after a certain time. No sound. Finally appliance switches off definitely. Burnt smell when trying to switch on again, then no switch on at all. Standby LED is OFF.
• Dark picture. No picture. via SCART. No audio. via SCART. No RC functions. (part of circuit diagram displayed) (MEDIATOR - 63KV5697 information)
• F4 displayed. LED flashes green then orange for slightly less than a sec. (part of circuit diagram displayed)
• No contrast control. (with circuit diagram extract)
• Intermittent black picture with TXT. Intermittent TXT in picture.
• When switching on the appliance when it's cold, it takes about 35 seconds before the picture appears. (with circuit diagram extract) (63KV5697 tip from MEDIATOR)
• At start up goes immediately into standby. 12C BUS blocks at 5V. (with circuit diagram extract)
• Line output transistor defective. (with circuit diagram extract)
• Does not stop at stations. Station search OK. (with circuit diagram extract)
• No HT output voltage of 148V. Voltage is present (approx. 158V) when disconnecting HT coils connector. (picture attached)
• No E/W correction. (with circuit diagram extract)
• No raster. (+ extract of circuit diagram)
• Intermittent picture size.
• No picture. F4 lights up in the display. (with circuit diagram extract) (63KV5697 tip from MEDIATOR)
• Tuning drifts. after a while.
• HT varies intermittently.
• Secondary voltages fall when loaded. (extract of circuit diagram attached)
• No synchronisation.
• No colour in SECAM and PAL. Colour may appear slightly in SECAM when warm. (with circuit diagram extract)
• Jagged picture. (part of circuit diagram displayed)
• Power supply BU blows after a few days. (63KV5697 MEDIATOR repair tip)
• Power supply crackles when power supply is low. (part of circuit diagram displayed)
• No audio. Picture OK . (part of circuit diagram displayed)
• Set not regulating after SOPS re-build of secondary side of PSU. (extract of circuit diagram attached)
• No picture. TXT OK . (extract of circuit diagram attached)
• Error codes. (extract of circuit diagram attached) (63KV5697 tips)
• Causes for appliance going into safety mode.
• Vertical shift incorrect, after replacing a 28" BL-CRT. (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. (+ extract of circuit diagram)
• White screen. (MEDIATOR - 63KV5697 information)
• Buzzing from PSU. in standby. (+ extract of circuit diagram)
• Poor audio. only on certain channels. Crackling audio.
• Vertical collapse. intermittently. (+ extract of circuit diagram)
• BU508 blows one min after HT transistor (BU508AF) has been replaced. Picture OK during this one min.
• Chopper transistor failure. (picture attached)
• Flyback lines. intermittently. (63KV5697 tip from MEDIATOR)
• No HV. (part of circuit diagram displayed)
• Vertical synchronisation fault when hot and presence of white line, then picture disappears (picture attached)
• Error message F7 appears in the first 2 mins. No operation possible. (extract of circuit diagram attached)
• No button operation. intermittently. (extract of circuit diagram attached)
• Transistor T7545 (BU508AF) becomes intermittently defective at program switch-over via "+" and "-" on user control.
• No switch on. Noise from loud-speakers and smell of burning. (extract of circuit diagram attached)
• No colour. (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)
• Black horizontal lines. (picture attached) (MEDIATOR - 63KV5697 information)
• Faded picture. No contrast. (+ extract of circuit diagram)
• Quick diagnosis (+ extract of circuit diagram)
• Appliance fails and later comes back unprompted. (picture attached)
• Pincushion distortion at each side. Adjustment potentiometer does not correct fault. (+ extract of circuit diagram)
• No adjustment from PSU possible. (picture attached)
• Defective SOPS. (picture attached)
• Poor linearity. (part of circuit diagram displayed)
• No colour in French standard. (+ extract of circuit diagram)
• Line output transformer failure.
• Switches off after operation time. LED goes off. Dead. Can be turned on via mains switch, then switches off again after operation time.
• Horizontal line. in the centre. (part of circuit diagram displayed)
• No brightness. No audio. Raster OK . (with circuit diagram extract)
• PSU repair. (extract of circuit diagram attached)
• Line output transistor fails repeatedly. after a while. (picture attached) (63KV5697 tip from MEDIATOR)
• Fails in standby. (extract of circuit diagram attached) (MEDIATOR - 63KV5697 information)
• No start-up. Standby LED does not light. (extract of circuit diagram attached)
• Buzzing from PSU. Motorboating noise from speakers. in standby. (+ extract of circuit diagram)
• S/C in EHT stage. (extract of circuit diagram attached)
• TS7625 (BUT 18AF) fails again. (+ extract of circuit diagram)
• Ragged picture.
• Line transformer noise. (with circuit diagram extract)
• No colour. Coloured bars in picture. OK after a few minutes. (extract of circuit diagram attached)
• Undefined Stereo Mono switchover.
• Appliance runs ok, but if remote used to switch to standby, appliance goes dead. (+ extract of circuit diagram)
• PSU chirps. (+ extract of circuit diagram)
• Dark screen. No OSD. (extract of circuit diagram attached)
• Egg-shaped picture, picture is pushed upwards. Underneath 5cm black bar. (with circuit diagram extract)
• PSU no function.
• Over oscillations below collector BUT18. (picture attached)
• With Blackline picture tubes occasional or random OSD insertion.
• Tuning does not function, drifts, raster doubles up. Vertical sychronisation fault. (+ extract of circuit diagram)
• No TXT, just lines on screen.
• Poor RC sensitivity.
• Picture shakes. (63KV5697 tip from MEDIATOR)
• +148V drops to 100V occasionally according to the tube output. (+ extract of circuit diagram)
• No start-up from standby with RC.
• Dark picture with thin vertical stripe in upper picture. (part of circuit diagram displayed)
• R3653 burns. (extract of circuit diagram attached)
• E/W fault. No E/W correction. (with circuit diagram extract) (MEDIATOR - 63KV5697 information)
• No sound or picture. Appliance appears to be in AV. (+ extract of circuit diagram)
• When switched off with RC, does not switch on again and LED remains off. (part of circuit diagram displayed)
• Horizontal size varies. (with circuit diagram extract)
• Intermittently line tearing in picture at the edges.
• 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)
• Brightness differences in picture. (extract of circuit diagram attached)
• U148V measures 20V.
• White picture and no amplitude when cold. Picture pumping. (extract of circuit diagram attached)
• Voltage too low. (extract of circuit diagram attached)
• No picture and sound. Buzz from power supply transformer.
• Repeated failure of CRT.
• Dark picture. Audio OK . (picture attached)
• Regulation does not function without a load. (extract of circuit diagram attached) (MEDIATOR - 63KV5697 information)
• Switches to safety mode at approx. 110 V mains voltage. (with circuit diagram extract)
• Sound and picture pulsating (2 times a sec) only via tuner.
• Horizontal output stage fails again after some time. (+ extract of circuit diagram)
• Poor regulation of the power supply. (+ extract of circuit diagram)
• Intermittent memory problem.
• No start-up with mains switch after switched off from standby.
• No sound. No response to commands from both RC and front panel. Error message F2 on screen. Picture ok. (with circuit diagram extract)
• Appliance starts up with the variac until it reaches 100V and then the appliance fails. (part of circuit diagram displayed)
• Intermittently blown Wickman fuse 1534.
• Picture and sound drop out. Appliance jumps to channel 1.
• Does not switch to standby. Picture remains on screen. (extract of circuit diagram attached)
• Frame shrinks horizontally when changing brightness. (part of circuit diagram displayed)
• No tuner reception. Search display functions well but appliance does not pick up any channel. (with circuit diagram extract)
• No picture. when cold. Audio OK . (with circuit diagram extract)
• R3368 and R3369 burn up at switch on. (part of circuit diagram displayed)
• Power supply falls to approx 40V AC on the variac. (extract of circuit diagram attached)
• The bottom half of the raster is missing, with the top cramped.
• BUT18AF blows in standby on the collector. (with circuit diagram extract)
• Control micro processors.
• Goes into safety mode if it is left in standby then switched on via the switch. Starts normally if speaker or HT O/C. (picture attached)
• Picture rolls. (with circuit diagram extract)
• Crackle a few seconds after Power On. (picture attached) (service info for MEDIATOR -63KV5697)
• Over-voltage circuit active. (+ extract of circuit diagram) (63KV5697 MEDIATOR repair tip)
• Shuts down. after a while. (with circuit diagram extract)
• Power supply blows when put into standby. (picture attached)
• Protection mode activated.
• Mono/stereo display error. (picture attached)
• Starts, but only raster. Display shows "F3". (with circuit diagram extract)
• Picture flickers for approx 5 mins after switch on when cold, then everything normal as soon as appliance reaches room temperature.
• Reduced horizontal size. intermittently.
• HV capacitor burns. (extract of circuit diagram attached)
• When switched to standby U1 becomes 60V. PSU goes to limiting. (with circuit diagram extract) (MEDIATOR - 63KV5697 information)
• Local dooming, especially with high contrast. (with circuit diagram extract) (63KV5697 tip from MEDIATOR)
• Blows components. after a few minutes. (part of circuit diagram displayed)
• Excessive red.
• Green spot after viewing a white object on the screen.
• Colour flickering during video editing.
• No luminance. (+ extract of circuit diagram)
• Protection of T7625 (BUT18AF). (+ extract of circuit diagram)
• Low brightness (even after turning up the preset in the U200 module).
• Horizontal white line. (+ extract of circuit diagram)
• Switch on during standby only functions when RC is very close to the appliance.
• No E/W. (63KV5697 tips)
• Vertical roll. (part of circuit diagram displayed)
• No switch on. Red LED flickers for 3 seconds.
• Crackling from FBT and black vertical bars on screen for a few secs after start up. (picture attached)
• Doesn't function with dummy load. (part of circuit diagram displayed)
• Vertical collapse. (with circuit diagram extract)
• Set does not start-up after implementing SOPS kit. (picture attached)
• Defective T7545. (extract of circuit diagram attached)
• Picture is not linear. Black bar at bottom of picture. (picture attached)
• No tuning. when cold. (extract of circuit diagram attached)
• No teletext and OSD is hardly visible. The regular picture vibrates if appliance is switched to teletext. (extract of circuit diagram attached)
• Green LED does not light up. Power supply oscillates. (with circuit diagram extract)
• Discharging noise. via speakers. (MEDIATOR - 63KV5697 information)
• Picture jitters and vertical bars distorted on cross-hatched pattern. Blue horizontal bars. (+ extract of circuit diagram) (63KV5697 tip from MEDIATOR)
• When warm, picture foldover and the line BU blows. (with circuit diagram extract)
• Ragged verticals.
• Lacks contrast. No reaction on the plus or minus key of the contrast button. Other commands are ok.
• Reduced format, flyback line slightly visible. (with circuit diagram extract)
• No picture, teletext and sound are fine. (with circuit diagram extract)
• Line transistor S/C.
• Width of picture pumps according to picture content and narrows with a strong white. (with circuit diagram extract)
• No functions. intermittently.
• Picture size varies with picture content. (picture attached)
• Power supply breaks down. (+ extract of circuit diagram)
• BUT18AF is defective and is destroyed when appliance is switched on. (picture attached)
• Blows fuse. after a few hours. (picture attached)
• 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)
• Vertical bar. on the left. (with circuit diagram extract)
• End stage transistor BU508 fails repeatedly at switch on. (+ extract of circuit diagram)
• Goes to blank screen with unlocked TXT lines when TXT selected.
• Vertical shaking. (part of circuit diagram displayed)
• Line BU blows after a moment. (picture attached)
• Picture takes some time to appear. Dark screen then TV stops. Round colour spot which slowly disappears. (with circuit diagram extract)
• Undefined STEREO mono switch over. OSD mono STEREO display present. (with circuit diagram extract)
• Colour bar at right of screen. (with circuit diagram extract)
• No quick start pulse. (part of circuit diagram displayed)
• Vertical deflection is defective. A piece is missing at the bottom and at the top the lines are pulled apart. (with circuit diagram extract)
• Flashing picture. (picture attached)
• No function. On start-up easy chirp is audible. (picture attached)
• Dark picture. intermittently. (picture attached)
• Blurry picture. (63KV5697 MEDIATOR repair tip)
• Hum in audio. (picture attached)
• Dead. Humming noise from transformer. (extract of circuit diagram attached)
• 148V at approx 30V. (part of circuit diagram displayed)
• In standby tries to operate spontaneously. (picture attached)
• Does not switch to standby. Horizontal line. LED blinks . (extract of circuit diagram attached)
• Wavy picture. at top.
• In VCR there are only chroma lines. (part of circuit diagram displayed)
• Erratic functions. (extract of circuit diagram attached)
• After start up, PSU fails. (part of circuit diagram displayed) (service info for MEDIATOR -63KV5697)
• 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)
• No chopper power supply. (+ extract of circuit diagram) (63KV5697 tip from MEDIATOR)
• Beam current dependent picture width fault. (with circuit diagram extract)
• Connection of the loop system to the TV.
• BUT18 is defective. (+ extract of circuit diagram)
• No colours at start up 50% of the time on satellite channels. OK in HF and VCR. (part of circuit diagram displayed)
• Flickering text and apparent tuning drift.
• Poor vertical linearity. Horizontal size varies. (+ extract of circuit diagram)
• Transformation in K' (only for stereo versions). (picture attached)
• Red light flashes for approximately 3 seconds then zero.
• BU508AF fails repeatedly. (with circuit diagram extract)
• Excessive vertical size. (part of circuit diagram displayed)
• No TXT. (+ extract of circuit diagram)
• Red LED blinking for 3 secs. (63KV5697 tip from MEDIATOR)
• No picture. Audio and OSD OK .
• Lines on picture and sections blanked out. No TXT. (+ extract of circuit diagram)
• Switches off intermittently. Standby LED (red-green) flashes. Picture drops out. (with circuit diagram extract)
• Picture is too wide or too small when adjusting horizontal size.
• One single line in the middle of the screen. (part of circuit diagram displayed)
• PSU transistor (BUT18A) becomes defective right after start-up.
• Blank screen. Audio OK . (63KV5697 tip from MEDIATOR)
• Sometimes the BUT18AF goes defective. (extract of circuit diagram attached)
• Picture takes a long time to appear (several mins). (with circuit diagram extract)
• PCD8582 and X2402 memory. (picture attached)
• Hum in audio. in standby. (+ extract of circuit diagram)
• Difficult to set up east/west and width controls. (picture attached)
• LED lights up for a moment. TV is dead. Light on the power supply sometimes functions. (part of circuit diagram displayed) (63KV5697 tip from MEDIATOR)
• Does not decode Canal Plus no the sound. Green LED flashes. (+ extract of circuit diagram)
• EXT1 switchover is defective, terrestrial program remains.
• Red flashing when changing channels with VCR playback in the still, search modes or edit points in own recordings. (part of circuit diagram displayed) (service info for MEDIATOR -63KV5697)
• Horizontal deflection BU fails after a few hours.
• Switches to protection mode. intermittently. (part of circuit diagram displayed)
• On channels 2 and 4 vertical lines on the left hand side of the picture.
• Channel change impossible after a moment. Channel remains displayed and front LED becomes orange. (extract of circuit diagram attached)
• Power supply problem. (+ extract of circuit diagram)
• Tripping. intermittently.
• Cannot be switched to standby. After the first attempt appliance is blocked. (part of circuit diagram displayed)
• Black screen. Audio OK . (with circuit diagram extract)
• Occasionally BUT18 blows in standby. (+ extract of circuit diagram)
• Sound only at program switch-over. (part of circuit diagram displayed)
• Trips. (+ extract of circuit diagram)
• No vertical synchronisation. (+ extract of circuit diagram)
• Sound was OK but there was no vision for the first 10 mins after switch on. (+ 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)
• BUT transistor becomes S/C either at switch on or after a certain period of time. (+ extract of circuit diagram) (service info for MEDIATOR -63KV5697)
• No colour. when cold. Poor colour. after warm-up. (extract of circuit diagram attached)
• Red picture. after a while. (picture attached)
• Dark background and a band of colour on the right. (+ extract of circuit diagram)
• Contrast adjustment inoperative, colour streaks. (extract of circuit diagram attached)
• No horizontal deflection. (+ extract of circuit diagram)
• Chopper transistor (BUT18AF) fails if appliance is switched on from standby. (picture attached)
• Interference in picture. No picture. No audio. (with circuit diagram extract)
• Ghosts and poor colours. (with circuit diagram extract)
• PSU blown.
• After approx 10 minutes startup picture randomly disappears then reappears. No TEXT, only a mass of lines.
• No picture. intermittently. (with circuit diagram extract)
• Horizontal line. Audio OK . (+ extract of circuit diagram) (service info for MEDIATOR -63KV5697)
• Colour flickering during video editing.
• Thyristor pos. 6670 fails. (part of circuit diagram displayed)
• Switches immediately to protection mode. Functions OK when protection mode is switched off. (part of circuit diagram displayed)
• EHT problems. (part of circuit diagram displayed)
• High voltage unit is smouldered. (with circuit diagram extract)
• Line output transistor fails repeatedly. (part of circuit diagram displayed)
• Picture shifted vertically.
• No functions. Red LED blinks. (part of circuit diagram displayed)
• Power supply fuse (18A) defective after 1 hr or less. (picture attached)
• Distorted TXT. at top.
• Picture stretched at top, compressed at bottom with black bar. Picture improves when warm. (part of circuit diagram displayed)
• Ballooning and incorrect picture linearity.
• Luminance takes a long time to appear. Distorted picture, focus pot does not react sufficiently. (+ extract of circuit diagram) (63KV5697 MEDIATOR repair tip)
• No TXT. Intermittent green dots or lines through picture. Black screen.
• Thyristor goes S/C when switched to standby. (picture attached)
• Horizontal shift no function.
• The output transistor of the power supply is defective. BUT11AF or 2SC3973B.
• BUT11A fails after operating for long time. (picture attached)
• Works correctly but power supply BUT11 blows after 3 weeks. (+ extract of circuit diagram) (63KV5697 tips)
• Poor width regulation with brightness. (+ extract of circuit diagram)
• POR signal too low. (extract of circuit diagram attached)
• Defective line transistor. (extract of circuit diagram attached)
• 148V measures 60V. (with circuit diagram extract)
• One colour missing.
• 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. (part of circuit diagram displayed) (MEDIATOR - 63KV5697 information)
• Low picture amplitude. Barrell-shaped picture. (with circuit diagram extract)
• 6cm black bar at bottom of picture. (63KV5697 MEDIATOR repair tip)
• No picture. Grey screen. Brightness control works normally. (part of circuit diagram displayed)
• Frizzy lines on the picture.
• Vertical foldover at top.
• Black stripe on left edge of screen. Horizontal linearity is not correct. (part of circuit diagram displayed)
• Black screen. No brightness. Audio OK . (extract of circuit diagram attached)
• Horizontal end stage BU508AF short circuits after different playing times. (with circuit diagram extract)
• Does not switch on from standby. LED blinks and goes off or changes to red and then no more functions.
• 148=68V. (+ extract of circuit diagram)
• TXT has no function. TXT is activated but only dark screen.
• Reduced horizontal size. Vertical foldover. in the centre. (with circuit diagram extract)
• Does not switch to standby, picture remains, sound mutes. (+ extract of circuit diagram)
• Vertical defective, too large line space in upper picture third. Linearity fault. (picture attached)
• Trapezoid picture. No E/W correction.
• Excessive brightness. (part of circuit diagram displayed)
• TXT problem. Some characters do not display.
• Picture collapses. Pincushion distortion. (+ extract of circuit diagram)
• 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)
• Starts without picture and audio then switches off after a few seconds. (MEDIATOR - 63KV5697 information)
• Narrowing of line and frame then flashing of the picture. Screen turns dark after 10 mins. Picture ok when cold. (extract of circuit diagram attached)
• No MONO audio. STEREO OK . (extract of circuit diagram attached)
• After about 3 to 4 weeks of regular play, the BUT18 and the main fuse automatically blow. (part of circuit diagram displayed)
• Searches for channels continuously. (part of circuit diagram displayed)
• Chopper transistor (BUT18AF), rectifier diodes and mains fuse become defective instantly. (part of circuit diagram displayed)
• No picture. Bright raster. Flyback lines. Audio OK . (part of circuit diagram displayed)
• Purity fault. (+ extract of circuit diagram)
• Shuts down. LED is green. (extract of circuit diagram attached) (63KV5697 tip from MEDIATOR)
• Unadjustable horizontal centering. (+ extract of circuit diagram)
• Faulty TXT. No TXT. intermittently.
• Set dead, power supply refuses to start. Also intermittent start and no standby (with circuit diagram extract)
• Oval picture.
• Diode D6653 installation sops kit.
• Blocked. (picture attached)
• No functions. LED lit. . (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. (part of circuit diagram displayed)
• Bright picture. Pulsating power. Incorrect picture edge on top and bottom. (with circuit diagram extract)
• The front control panel changes channels upwards but not downwards. All other functions OK.
• Set functions with the variac but BUT11AF blows when appliance is plugged in. (extract of circuit diagram attached) (service info for MEDIATOR -63KV5697)
• Line output transistor fails repeatedly. after start-up.
• East/west raster distortion: width and shaping control do not function.
• No LED lit. (picture attached)
• Intermittently screen blanks out. Random characters on screen.
• No picture. No display. Erratic functions. (with circuit diagram extract)
• With high volume the appliance switches spontaneously to standby. (picture attached)
• Blows components. at start-up. (part of circuit diagram displayed)
• No picture, only horizontal stripe on top. Picture appears only after a long while. Then picture collapses to a horizontal stripe in the centre.
• Slow start-up. (extract of circuit diagram attached)
• Slight E/W distortion. (+ extract of circuit diagram)
• On the test picture, distorted, vertical lines at top and bottom of the screen. (extract of circuit diagram attached)
• Stuck on channel 1.
• Green picture. after a while. (+ extract of circuit diagram)
• F5 displayed on a screen corner. Occasionally channels switch over to channel 1 or TV switches off.
• Poor E/W adjustment. Picture is narrow in the middle. (part of circuit diagram displayed)
• Replacing the EEPROM. (+ extract of circuit diagram)
• PSU repeatedly blows up. (with circuit diagram extract)
• Page 811 appears spontaneously. (+ extract of circuit diagram) (63KV5697 tips)
• S/C on deflection circuit. (picture attached)
• Stretched picture. at top. Reduced raster size. at bottom. (picture attached)
• Black screen. intermittently. (picture attached)
• Poor horizontal centering. (+ extract of circuit diagram)
• Local dooming. (extract of circuit diagram attached)
• BUT11 in power supply defective after few days, or when in standby. (picture attached)
• Difficult horizontal and vertical adjustment and sawtooth at the side. (extract of circuit diagram attached) (63KV5697 tip from MEDIATOR)
• No sound when input connection made via 2 S-VHS phono sockets.
• Picture green and purple in the E/W direction.
• Mains fuse O/C and BUT S/C. (part of circuit diagram displayed)
• Dead set caused by lightning damage. (part of circuit diagram displayed)
• No red. (picture attached)
• No picture or narrow streak after warm-up. (extract of circuit diagram attached)
• Starts up again then clicks after a few mins. PSU faled again. (+ extract of circuit diagram)
• After a few secs in standby, 7625 and fuse destroyed. (part of circuit diagram displayed)
• No synchronisation. when cold. (+ extract of circuit diagram)
• Horizontal-BU 508AF has a s/c. After replacing this fails again after a few seconds. (with circuit diagram extract)
• PSU blocking. (+ extract of circuit diagram)
• Snow on screen and no reception. F4 displayed on screen. Green LED lit. (+ extract of circuit diagram) (63KV5697 tip from MEDIATOR)
• Does not switch to standby. LED turns pink. Picture remains. Sound mutes. (part of circuit diagram displayed)
• Extra protection for chopper transistor TR7625 (BUT18AF). (with circuit diagram extract)
• Mono/Stereo-indication switches. (part of circuit diagram displayed)
• Vertical lines. on the left. Excessive brightness. (+ extract of circuit diagram)
• Appliance starts intermittently with no standby. (with circuit diagram extract)
• Appliance works fine for hours, but after switching off with the remote control the BUT18 and mains fuse go defective. (extract of circuit diagram attached)
• Vertical foldover at top and bottom. (picture attached)
• Volume uncontrollable. No brightness control.
• No picture, no sound. TV starts up and tube lights up. (picture attached)
• BUT18 and rectifier bridge blow every two days even after modifications.
• Does not go into standby. LED becomes orange but picture remains. (picture attached)
• With Blackline picture tubes in the EXT1-Mode a white field is visible on the right side. (MEDIATOR - 63KV5697 information)
• No picture. on lower half screen. (+ extract of circuit diagram)
• Vertical deflection is defective. Picture present, after a short time a line appears then picture disappears. (with circuit diagram extract)
• CTV functions one day. (part of circuit diagram displayed)
• Dead. Error code F1 displayed.
• Switching transistor in power supply goes short circuit (BUT18).
• No picture. after a while. White screen. (+ extract of circuit diagram)
• Tuning unstable. (extract of circuit diagram attached) (63KV5697 MEDIATOR repair tip)
• Line end stage U/syst collapses to approx. 48V. (with circuit diagram extract)
• Very low secondary voltages. (picture attached)
• Replacement of TDA8451 (IC7305). (+ extract of circuit diagram)
• S/C in 148V line. (+ extract of circuit diagram)
• BUT11 becomes defective after 3 days of use. (with circuit diagram extract)
• Reduced horizontal size. after a while. (part of circuit diagram displayed)
• No linearity. (with circuit diagram extract) (63KV5697 tip from MEDIATOR)
• Intermittently BUT18 defective after switching on. (picture attached)
• Vertical roll. when cold. (part of circuit diagram displayed) (63KV5697 tip from MEDIATOR)
• BU508 blows after 1 or 2 days. (part of circuit diagram displayed)
• Switching transistor T7625 has failed. (+ extract of circuit diagram)
• Coloured spots in picture (local dooming). (extract of circuit diagram attached)
• Fuse, bridge rectifier and BUT11 in PSU blow when in standby for 10 mins. (part of circuit diagram displayed)
• Raster signal problem.
• No horizontal synchronisation. (+ extract of circuit diagram)
• Dead. Red LED blinks. (with circuit diagram extract)
• No functions. No button operation. (part of circuit diagram displayed)
• No audio. when cold. No OSD. when cold. (+ extract of circuit diagram)
• Vertical collapse. after a few minutes. Audio OK .
• No PAL chroma.
• Shuts down. after a few minutes. (picture attached)
• Wavy picture. via AV.
• Dark streak on screen.
• Channels run through. (extract of circuit diagram attached)
• No light lit. (part of circuit diagram displayed)
• Picture leans too much to one side, Black line visible in the picture. (picture attached) (63KV5697 tip from MEDIATOR)
• Picture linearity error. Picture has shifted towards top. Picture folds over at the bottom.
• S/C in line output stage (7645). (part of circuit diagram displayed)
• Grey screen. (extract of circuit diagram attached)
• When put into standby tube remains lit. Picture cuts out normally. (extract of circuit diagram attached)
• 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.
• Primary PSU switches off. No standby LED.
• TV blocked in F3.
• Reduced vertical size. (extract of circuit diagram attached)
• Vertical foldover. (with circuit diagram extract)
• No sound or vision, display going to F1.
• PSU varies according to picture content when warm. (part of circuit diagram displayed)
• Supply transistor BUT18A becomes defective immediately after switching on the appliance. (part of circuit diagram displayed) (63KV5697 tip from MEDIATOR)
• The power supply BUT18AF shorts after operating for 5 hours. (part of circuit diagram displayed)
• Picture width changes according to its content. Linear distortion on right and left sides over 5cm (no ondulation).
• No audio. after a while. (part of circuit diagram displayed)
• No picture. in E-E. Audio OK .
• Appliance hums in Standby.
• Service mode
• 148V does not go pass 20V. (extract of circuit diagram attached)
• Slow start-up. Audio OK . (part of circuit diagram displayed)
• No sound, even with in or out scart.
• Defective BUT and fuse in the PSU. After replacing the appliance runs for several days until the fault occurs again. (picture attached)
• Intermittent failure thyristor 6670 in STANDBY mode. (picture attached)
• No horizontal synchronisation. when cold. (picture attached)
• Distorted vertical lines at top and bottom of monoscope. E/W correction is faulty. (part of circuit diagram displayed)
• Severe crossover distortion in left channel.
• Takes approx 1 minute to come on, will not switch to standby, sound mutes but pulsating picture remains. (picture attached)
• No audio. intermittently. (with circuit diagram extract)
• Destruction of the power supply BU. (picture attached)
• No picture. No brightness. No sound. Picture tube filament on.
• Intermittently dead. (picture attached)
• U system only 5V instead 148V. (extract of circuit diagram attached) (63KV5697 MEDIATOR repair tip)
• Line BU blows after operating for 3-5 mins. (extract of circuit diagram attached) (63KV5697 tip from MEDIATOR)
• PSU fails after a short time (S/C of BUT18AF). (+ extract of circuit diagram)
• Dead. intermittently.
• As the set warms up the picture flashes cyan every few seconds. (with circuit diagram extract)
• Impossible to adjust horizontal shift of picture using R3595. (picture attached)
• Horizontal, bright line.
• Picture flickers the first 5 minutes. Gradually becomes less but very visible in the dark portions of the screen.
• Picture jitters. when cold. (+ extract of circuit diagram)
• Local dooming - spots in the picture.
• Line end-stage has no function.
• Squealing from PSU. after start-up. (extract of circuit diagram attached)
• Vertical sync does not stop. (part of circuit diagram displayed)
• Loss of red, green or blue or excessive red, green or blue pictures.
• No or poor synchronisation.
• Thyristor TR7670 breaks down after two days (loose contacts). (+ extract of circuit diagram)
• No colour. intermittently. (picture attached)
• Coloured flash on channel change and VCR features. (part of circuit diagram displayed)
• BUT18, R3570 and F1534 blow. (part of circuit diagram displayed)
• Line pairing at top half of the picture (extract of circuit diagram attached)
• Blows chopper transistor when switching on with remote. (extract of circuit diagram attached)
• Power supply is low when warm. (picture attached) (service info for MEDIATOR -63KV5697)
• No tuning. intermittently. (part of circuit diagram displayed)
• White picture on the right side in EXT1 mode.
• Unstable AFC. Noisy picture. (+ extract of circuit diagram)
• Cramped at bottom with slight foldover.
• BU508, Q7593 and Q7594 are defective. (extract of circuit diagram attached) (MEDIATOR - 63KV5697 information)
• 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 functions. intermittently. LED blinks . Shuts down. (part of circuit diagram displayed)
• Defective BUT.
• Usys voltage of line output stage collapses to approx 48V. (+ extract of circuit diagram)
• Humming noise from transformer. in standby. (extract of circuit diagram attached) (63KV5697 tips)
• Hum bar. (63KV5697 MEDIATOR repair tip)
• TV locked by and keys.
• Thyristor fails in PSU in standby. Otherwise appliance OK. (part of circuit diagram displayed)
• The picture is indented (horizontally).
• Switches to protection mode. (picture attached)
• Tuning search does not stop when appliance has found a station. (part of circuit diagram displayed)
• Line output stage periodically fails. (with circuit diagram extract)
• Negative picture when cold and sometimes intermittently. (picture attached) (63KV5697 tip from MEDIATOR)
• Lower picture third is dark. Upper picture is dispersed. (with circuit diagram extract) (MEDIATOR - 63KV5697 information)
• Line output transistor fails repeatedly. intermittently. (picture attached) (63KV5697 tip from MEDIATOR)
• Appliance does not start up. Crackling. (+ extract of circuit diagram)
• Picture looks as if it were encoded (like on C+ channel). Sound is OK.
• Protective circuit starts up. (extract of circuit diagram attached) (63KV5697 tip from MEDIATOR)
• Power supply failure. (extract of circuit diagram attached)
• Chopper and line output transistors S/C. (with circuit diagram extract)
• Videotext has turbulent text content in upper section. (63KV5697 tips)
• Intermittent line and raster synchro. (part of circuit diagram displayed)
• PSU defective. (+ extract of circuit diagram)
• Functions but heat sink gets very hot after 10 mins. When put into standby, noise in the PSU. (picture attached)
• Nasal sound on channels 5 and 6. (extract of circuit diagram attached)
• Snow on screen and no tuner reception. F3 displayed on screen. Green LED on.
• 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)
• Reduced vertical size at bottom.
• No picture. when cold. (part of circuit diagram displayed)
• Poor frame linearity when cold. Picture is distorted vertically. (with circuit diagram extract)
• Excessive horizontal size. Picture size varies with picture content. (+ extract of circuit diagram) (63KV5697 tips)
• Dark screen. No picture. No RC functions. (extract of circuit diagram attached)
• Functions with an automatic transformer up to 110, 120V. (with circuit diagram extract)
• Memory loss. (picture attached)
• Retrace lines. intermittently.
• Poor picture. via tuner. (part of circuit diagram displayed)
• Dark screen and bright bar at the top. Clock is strange. Sound present. (picture attached)
• Dark screen. LED is green. (+ extract of circuit diagram)
• OSD partly disappeared from the screen in BL sets. (part of circuit diagram displayed)
• Adjustment black line matrix.
• Smoke from +12V resistor. (part of circuit diagram displayed)
• Poor field linearity.
• Chroma fault in SECAM. (extract of circuit diagram attached)
• 100V power supply is approx 35V. (+ extract of circuit diagram) (63KV5697 MEDIATOR repair tip)
• Dark picture. Picture rolls. Picture shifted to the left. Flickering picture. (extract of circuit diagram attached)
• Distorted audio. (MEDIATOR - 63KV5697 information)
• 185V instead of 148V. When taking a measurement on collector of TZ 7652, bulb goes off. (+ extract of circuit diagram) (63KV5697 MEDIATOR repair tip)
• No control signal to IC7470 (TDA) and no line scanning. (picture attached)
• T7637 blown. (with circuit diagram extract)
• Character error.
• Blows chopper transistor at switch on.
• Defective standby thyristor (SFOR5D43). (extract of circuit diagram attached)
• BUT18 blows at 100V on the variac.
• Intermittent fault all over the screen or over an irregular width band leading to line foldover, similar to coded Canal Plus picture. (with circuit diagram extract)
• Search stops with good tuning.
• Poor vertical linearity. Reduced vertical deflection. (with circuit diagram extract)
• Start with interfering voltage. (part of circuit diagram displayed)
• Displays error code F4. When you switch to standby again, F4 appears again. LED flashes. Only noise. (+ extract of circuit diagram)
• Power supply goes into safety mode and crackles. (with circuit diagram extract)
• Dark picture. at bottom. Stretched picture. at top. (extract of circuit diagram attached)
• Buzz in audio. (with circuit diagram extract)
• Replacing TDA2579. (extract of circuit diagram attached)
• Low contrast. (part of circuit diagram displayed)
• 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)
• Only pulsates once. Resistor R3661 in the 5V rail is burnt.
• Capacitor 2545 in PSU burns. (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)
• Distorted picture. at top. (with circuit diagram extract)
• Line BU keeps failing. (with circuit diagram extract)
• Shuts down. after a while. LED blinks .
• +16V flashover. (part of circuit diagram displayed)
• No output voltage.
• Picture is too big or too small during horizontal amplitude adjustment.
• No blue. (picture attached)
• Picture flickers intermittently, sound disappears. Picture reappears by itself, sound doesn't but can be activated with the RC.
• TV starts, has raster but no image and no sound. Display shows "FO". (picture attached)
• No signal on the BUT11AF collector. (+ 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. (extract of circuit diagram attached) (63KV5697 MEDIATOR repair tip)
• BUT11AF S/C. (picture attached)
• No function, only hums. (+ extract of circuit diagram)
• Line output transformer does not start up. (with circuit diagram extract)
• Vertical bars on channels 2 and 4 (extract of circuit diagram attached) (63KV5697 tip from MEDIATOR)
• Too high power supply. (with circuit diagram extract)
• Light green picture despite adjusting. Impossible to get red. (extract of circuit diagram attached)
• Snow in picture. (+ extract of circuit diagram)
• Switching transistor of the SOPS power supply is defective. (picture attached)
• Top of text is ringing. Intermittent text.
• To give improved protection to the BUT11AF chopper transistor TR7665.
• The horizontal centering cannot be adjusted correctly. It may have shifted after the appliance has warmed up.
• Low contrast. in TXT. (picture attached)
• No start-up. (with circuit diagram extract)
• 5.1V incorrect. (picture attached)
• Dead. Soft ticking sound.
• Poor OSD. Unusual colour of some characters. (+ extract of circuit diagram)
• No channels. (63KV5697 MEDIATOR repair tip)
• White screen. Flyback lines. Shuts down. after a few seconds. (+ extract of circuit diagram)
• Secondary voltage cannot be adjusted lower than 160V. PSU however can be regulated with this voltage.
• White area visible on right side of screen in EXT1 mode of BL sets. (with circuit diagram extract)
• Top of TXT waves from side to side. (extract of circuit diagram attached)
• No power supply, protection circuit triggered. (+ extract of circuit diagram)
• No picture, only audio via SCART. "Off air" picture displayed.. (picture attached)
• Noise in picture. (extract of circuit diagram attached)
• No synchronisation. intermittently. (picture attached)
• Lines in picture. on the left.
• When switching on, HV part hums. No control function is possible. (picture attached)
• Colour blobs in the picture.
• Change in picture width depending on beam current. (extract of circuit diagram attached)
• Reduced vertical deflection. intermittently. (+ extract of circuit diagram)
• Microprocessor/eprom screening plate. (extract of circuit diagram attached)
• Vertical foldover at bottom. (part of circuit diagram displayed) (63KV5697 tip from MEDIATOR)
• No functions. Power LED lit . (+ extract of circuit diagram)
• Line tearing and picture twitching at the sides of the picture.
• The sound fails: after changing over to a different channel, the sound is back. (picture attached)
• Red standby light then dead at switch on. TV starts up on the variac. (+ extract of circuit diagram)
• 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. (part of circuit diagram displayed)
• Single dark lines in picture centre. (63KV5697 MEDIATOR repair tip)
• Doesn't switch into standby. Green LED goes orange and flashes after pressing standby key .
• Fuse and PSU BU (BUT18AF) defective.
• No regulation. (part of circuit diagram displayed)
• Only grey picture after being struck by lightning. TXT also runs. (with circuit diagram extract)
• BUT18AF fails repeatedly. (extract of circuit diagram attached) (63KV5697 tip from MEDIATOR)
• Picture varies with beam current. (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. (63KV5697 MEDIATOR repair tip)
• Appliance only functions until the 120V is reached with the variac. When the mains voltage is increased the appliance fails. (part of circuit diagram displayed)
• How to check the power supply without blowing BUT18AF.
• Loud noise. (+ extract of circuit diagram)
• Local dooming / PP-settings. (part of circuit diagram displayed)
• No function. Buzzing noise. (picture attached)
• Frayed vertical lines. (extract of circuit diagram attached)
• Poor regulation. (picture attached)
• Flash over on picture tube print. (MEDIATOR - 63KV5697 information)
• If mains switched off when in standby, it does not start up again. Light off. (picture attached)
• Blue picture. after a while. (picture attached)
• Vertical size varies. Vertical jitter.
• No horizontal synchronisation. intermittently. (with circuit diagram extract)
• No OSD. intermittently. (+ extract of circuit diagram)
• No colours. After approx an hour colours appear with fluctuations. (extract of circuit diagram attached)
• In Standby BUT18AF (T7625) becomes defective.
• The appliance functions correctly in standard B,G but the sound hums in F standard. (with circuit diagram extract)
• Vertical linearity is upwards a little sharp. Picture has shifted upwards. (picture attached)
• Line output transformer overheats. (picture attached)
• No E/W correction. Pincushion distortion. (with circuit diagram extract)
• When warm, there is a raster fault on the left. (picture attached)
• Does not store settings. (part of circuit diagram displayed)
• The resistors 3661 and 3662 burn in standby, TS7625 is also defective sometimes. (picture attached)
• Switches on for a few secs with extreme brightness. No picture. Sound OK. Goes into safety mode immediately after.
• Noise in audio.
• The standby thyristor blows. (part of circuit diagram displayed)
• No operation. (+ extract of circuit diagram)
• White square in a corner of the screen. (part of circuit diagram displayed)
• PSU has no function. (63KV5697 MEDIATOR repair tip)
• BU508 defective after switching channel (when appliance is warm). (part of circuit diagram displayed)
• No reset.
• Blank raster. No tuning.
• BUT18AF (T7625) becomes defective in standby. (part of circuit diagram displayed)
• PSU becomes defective after switch on via mains switch.
• S/C from point 18 at line transformer to the ground. (part of circuit diagram displayed)
• Switches off during operation. When it is switched on again crackling is heard from HT. (with circuit diagram extract)
• Appliance works for 4 hours and then cuts out completely.
• Phase fault. (extract of circuit diagram attached)
• Picture shifted to the right. Poor synchronisation. (extract of circuit diagram attached)
• Poor picture synchronisation during station switch-over. Vertical picture jitter, runs through, poor picture via RF or EXT. (part of circuit diagram displayed)
• Horizontal stripe. (+ extract of circuit diagram)
• No start up. No front panel LED. Quiet noise from loud-speakers.
• Arcing. Picture tearing. Does not synchronise. (extract of circuit diagram attached)
• Power supply too low (20V). (extract of circuit diagram attached)
• No 9V. (+ extract of circuit diagram)
• Low sound on channel A. (+ extract of circuit diagram)
• Ticking sound. (picture attached)
• Intermittently green "F5" on screen, thereby very dark picture or TXT appears. (picture attached)
• No picture. No audio. OK via SCART . (+ extract of circuit diagram)
• Pulsating, no start up. (part of circuit diagram displayed)
• Weak contrast. No contrast control.
• Vertical stripes at left picture edge via channel 2 and 4. (picture attached) (MEDIATOR - 63KV5697 information)
• Interference in picture. when cold. (part of circuit diagram displayed)
• Fails occasionally.
• Line transistor 7545 fails after approx. 3 secs. (+ extract of circuit diagram)
• SOPS power supply repeatedly becomes defective. (+ extract of circuit diagram)
• Orange spots on the right of the screen.
• +120V instead of +148V. (extract of circuit diagram attached)
• Picture fault in tuner and scart.
• No sound or picture. Snowy screen (picture with test signal). Vertical interference bars. (part of circuit diagram displayed)
• Blows chopper transistor. (picture attached)
• Poor chroma identification in Pal/Secam. On channels 5, 6 or with VCR, blue or red bands. (part of circuit diagram displayed)
• 17V instead of 140V. (with circuit diagram extract)
• No start-up. intermittently. (with circuit diagram extract)
• Faulty TXT. (with circuit diagram extract)
• Picture pulsates on white background.
• Contrast variations with subtitling in sets with BL-CRT. (picture attached) (63KV5697 tips)
• Picture is affected by frizzy lines occasionally with crackling noise in the speakers and perhaps with a burnt smell. (extract of circuit diagram attached)
• E-W output stage fails as soon as the appliance is switched on. Fuse 1534 (315mA) also fails. (picture attached)
• No vertical deflection. Horizontal line. (+ extract of circuit diagram)
• White picture with flyback lines. (with circuit diagram extract)
• The line transistor blows after 5 minutes. (extract of circuit diagram attached)
• No picture. Audio OK . (extract of circuit diagram attached)
• Dark picture.
• Transistor 7545 (BU508AF) is blown. (with circuit diagram extract)
• Dark screen. via tuner. Audio and OSD OK . (+ extract of circuit diagram)
• Horizontal stripe. intermittently. (with circuit diagram extract)
• Poor NICAM sound from left hand speaker. (MEDIATOR - 63KV5697 information)
• Reduced raster size. (+ extract of circuit diagram)
• No switching into CCIR standard. Display ok in SECAM and PAL/SECAM. (picture attached)
• Line BU508blows after 3 days. (part of circuit diagram displayed)
• PSU fuse blown. (with circuit diagram extract)