63KV5616 GOYA / SIERRA [TV 63 (59) cm picture]

• BUT18 is defective. (+ extract of circuit diagram)
• No colour. Coloured bars in picture. OK after a few minutes. (part of circuit diagram displayed)
• No sound or vision, display going to F1.
• F4 displayed. LED flashes green then orange for slightly less than a sec. (+ extract of circuit diagram)
• The power supply BUT18AF shorts after operating for 5 hours. (+ extract of circuit diagram)
• R3368 and R3369 burn up at switch on. (+ extract of circuit diagram)
• Colour flickering during video editing.
• Difficult to set up east/west and width controls. (+ extract of circuit diagram)
• Intermittently screen blanks out. Random characters on screen. (SIERRA - 63KV5616 information)
• Sometimes the BUT18AF goes defective. (part of circuit diagram displayed)
• Dark picture. Audio OK . (+ extract of circuit diagram)
• Vertical bars on channels 2 and 4 (+ extract of circuit diagram)
• Cramped at bottom with slight foldover.
• In VCR there are only chroma lines. (part of circuit diagram displayed)
• Dark screen. No picture. No RC functions. (+ extract of circuit diagram) (63KV5616 SIERRA repair tip)
• PSU varies according to picture content when warm. (extract of circuit diagram attached)
• Vertical lines. on the left. Excessive brightness. (with circuit diagram extract)
• Line BU keeps failing. (with circuit diagram extract)
• Contrast adjustment inoperative, colour streaks. (+ extract of circuit diagram)
• Reduced vertical size at bottom.
• Distorted picture. at top. (+ extract of circuit diagram)
• Switches off intermittently. Standby LED (red-green) flashes. Picture drops out. (+ extract of circuit diagram)
• HT varies intermittently. (service info for SIERRA -63KV5616)
• No picture, only audio via SCART. "Off air" picture displayed.. (extract of circuit diagram attached)
• Smoke from +12V resistor. (with circuit diagram extract)
• Poor field linearity.
• Green LED does not light up. Power supply oscillates. (+ extract of circuit diagram)
• Darker bar on left of screen. (+ extract of circuit diagram)
• Horizontal-BU 508AF has a s/c. After replacing this fails again after a few seconds. (+ extract of circuit diagram)
• Distorted audio. (63KV5616 tip from SIERRA)
• Line end stage U/syst collapses to approx. 48V. (part of circuit diagram displayed)
• Negative picture when cold and sometimes intermittently. (extract of circuit diagram attached)
• Excessive red.
• Quick diagnosis (extract of circuit diagram attached)
• Defective T7545. (extract of circuit diagram attached)
• Dark screen. in TXT.
• Red light flashes for approximately 3 seconds then zero. (SIERRA - 63KV5616 information)
• U148V measures 20V.
• Erratic functions. (extract of circuit diagram attached)
• Chopper transistor (BUT18AF) fails if appliance is switched on from standby. (with circuit diagram extract)
• One colour missing.
• Tuning does not function, drifts, raster doubles up. Vertical sychronisation fault. (part of circuit diagram displayed)
• Distorted vertical lines at top and bottom of monoscope. E/W correction is faulty. (picture attached)
• Poor chroma identification in Pal/Secam. On channels 5, 6 or with VCR, blue or red bands. (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)
• Regulation does not function without a load. (extract of circuit diagram attached) (63KV5616 tips)
• Line output transistor fails repeatedly. intermittently. (part of circuit diagram displayed)
• Strange noise in loudspeakers. (picture attached)
• No colour in French standard. (+ extract of circuit diagram)
• The appliance functions correctly in standard B,G but the sound hums in F standard. (part of circuit diagram displayed)
• Blows components. at start-up. (+ extract of circuit diagram) (service info for SIERRA -63KV5616)
• The horizontal centering cannot be adjusted correctly. It may have shifted after the appliance has warmed up. (63KV5616 SIERRA repair tip)
• Line BU blows after operating for 3-5 mins. (with circuit diagram extract)
• After a few secs in standby, 7625 and fuse destroyed. (with circuit diagram extract)
• Red LED blinking for 3 secs.
• Line output transistor fails repeatedly. after a while. (+ extract of circuit diagram)
• Black screen. No brightness. Audio OK . (with circuit diagram extract)
• Appliance fails and later comes back unprompted. (+ extract of circuit diagram)
• Phase fault. (with circuit diagram extract)
• Picture shifted vertically. (63KV5616 SIERRA repair tip)
• Protection of T7625 (BUT18AF). (picture attached)
• Bright picture. Pulsating power. Incorrect picture edge on top and bottom. (part of circuit diagram displayed)
• PSU repair. (picture attached)
• F5 displayed on a screen corner. Occasionally channels switch over to channel 1 or TV switches off.
• No LED lit. (with circuit diagram extract)
• After start up, PSU fails. (+ extract of circuit diagram)
• Poor linearity. (picture attached)
• Diode D6653 installation sops kit.
• Poor picture. via tuner. (with circuit diagram extract) (63KV5616 tips)
• 148V does not go pass 20V. (picture attached) (63KV5616 SIERRA repair tip)
• 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)
• Power supply goes into safety mode and crackles. (part of circuit diagram displayed) (63KV5616 tips)
• Sound was OK but there was no vision for the first 10 mins after switch on. (with circuit diagram extract)
• Retrace lines. intermittently. (63KV5616 tip from SIERRA)
• No vertical deflection. intermittently. (with circuit diagram extract)
• Takes approx 1 minute to come on, will not switch to standby, sound mutes but pulsating picture remains. (part of circuit diagram displayed)
• Flyback lines. intermittently.
• Trapezoid picture. No E/W correction. (63KV5616 tip from SIERRA)
• When switching on, HV part hums. No control function is possible. (picture attached)
• Functions with an automatic transformer up to 110, 120V. (picture attached)
• No contrast control. (picture attached)
• Vertical sync does not stop. (part of circuit diagram displayed)
• Low sound on channel A. (picture attached)
• Destruction of the power supply BU. (picture attached)
• No sound when input connection made via 2 S-VHS phono sockets.
• Humming noise from transformer. Line output transistor fails repeatedly. (+ extract of circuit diagram)
• Poor regulation. (picture attached)
• Error message F7 appears in the first 2 mins. No operation possible. (with circuit diagram extract)
• Tuning drifts. after a while.
• TV blocks on 600MHZ. If you do a frequency search, it goes through all frequencies but does not find any channels. (part of circuit diagram displayed)
• Unadjustable horizontal centering. (part of circuit diagram displayed)
• BUT11 in power supply defective after few days, or when in standby. (picture attached)
• Purity fault. (picture attached)
• PSU has no function.
• Fuse and PSU BU (BUT18AF) defective.
• Snow in picture. (with circuit diagram extract)
• No tuning. when cold. (with circuit diagram extract)
• No power supply, protection circuit triggered. (part of circuit diagram displayed)
• No operation. (with circuit diagram extract)
• No E/W correction. Pincushion distortion. (extract of circuit diagram attached)
• Search stops with good tuning. (63KV5616 tip from SIERRA)
• Very low secondary voltages. (+ extract of circuit diagram)
• T7637 blown. (with circuit diagram extract)
• HV capacitor burns. (with circuit diagram extract)
• BUT transistor becomes S/C either at switch on or after a certain period of time. (part of circuit diagram displayed)
• The standby thyristor blows. (with circuit diagram extract)
• No E/W correction. (picture attached)
• Picture fault in tuner and scart.
• Local dooming - spots in the picture.
• Change in picture width depending on beam current. (extract of circuit diagram attached) (service info for SIERRA -63KV5616)
• BUT18AF is defective and is destroyed when appliance is switched on. (picture attached)
• Grey screen. (with circuit diagram extract)
• No functions. intermittently.
• Slow start-up. Switches to standby. (extract of circuit diagram attached)
• S/C in line output stage (7645). (part of circuit diagram displayed)
• No vertical deflection. Horizontal line. (+ extract of circuit diagram)
• Appliance hums in Standby.
• No reset.
• Defective standby thyristor (SFOR5D43). (+ extract of circuit diagram) (63KV5616 tip from SIERRA)
• No picture, no sound. TV starts up and tube lights up. (part of circuit diagram displayed)
• 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)
• Does not switch to standby. LED turns pink. Picture remains. Sound mutes. (picture attached) (63KV5616 SIERRA repair tip)
• Volume uncontrollable. No brightness control. (service info for SIERRA -63KV5616)
• No picture. when cold. Audio OK . (with circuit diagram extract)
• 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. (with circuit diagram extract)
• The line transistor blows after 5 minutes. (extract of circuit diagram attached)
• Does not decode Canal Plus no the sound. Green LED flashes. (picture attached)
• Does not switch to standby. No functions. at switch-off. (picture attached)
• Functions but heat sink gets very hot after 10 mins. When put into standby, noise in the PSU. (extract of circuit diagram attached)
• Top of text is ringing. Intermittent text.
• BUT18 fails repeatedly. (extract of circuit diagram attached)
• The front control panel changes channels upwards but not downwards. All other functions OK.
• Vertical collapse. after a few minutes. Audio OK .
• No picture. Grey screen. Brightness control works normally. (picture attached)
• No MONO audio. STEREO OK . (with circuit diagram extract)
• Set does not start-up after implementing SOPS kit. (with circuit diagram extract) (63KV5616 SIERRA repair tip)
• No horizontal deflection. (extract of circuit diagram attached)
• Picture pulsates on white background.
• Blows chopper transistor at switch on.
• Weak contrast. No contrast control.
• Power supply falls to approx 40V AC on the variac. (+ extract of circuit diagram)
• Squealing from PSU. after start-up. (extract of circuit diagram attached)
• No start-up. Standby LED does not light. (with circuit diagram extract)
• Power supply blows when put into standby. (with circuit diagram extract) (service info for SIERRA -63KV5616)
• Green spot after viewing a white object on the screen.
• On channels 2 and 4 vertical lines on the left hand side of the picture.
• No colour. intermittently. (with circuit diagram extract)
• After approx 10 minutes startup picture randomly disappears then reappears. No TEXT, only a mass of lines.
• Faulty TXT. No TXT. intermittently.
• Dark screen. No OSD. (part of circuit diagram displayed)
• Luminance takes a long time to appear. Distorted picture, focus pot does not react sufficiently. (extract of circuit diagram attached)
• Picture is not linear. Black bar at bottom of picture. (+ extract of circuit diagram)
• Appliance runs ok, but if remote used to switch to standby, appliance goes dead. (extract of circuit diagram attached)
• Over-voltage circuit active. (with circuit diagram extract)
• Vertical foldover. (extract of circuit diagram attached)
• Transistor T7545 (BU508AF) becomes intermittently defective at program switch-over via "+" and "-" on user control.
• Vertical synchronisation fault when hot and presence of white line, then picture disappears (extract of circuit diagram attached)
• Distorted picture. (with circuit diagram extract)
• No PAL chroma.
• TXT problem. Some characters do not display. (63KV5616 tips)
• Line output stage periodically fails. (with circuit diagram extract)
• Power supply too low (70V). (extract of circuit diagram attached)
• No synchronisation.
• Hum in audio. in standby. (+ extract of circuit diagram)
• Causes for appliance going into safety mode.
• No channels.
• Set can be turned off with RC, but not turned on. S.B. LED blinks. (with circuit diagram extract)
• No regulation. (picture attached)
• Dark picture. No picture. via SCART. No audio. via SCART. No RC functions. (+ extract of circuit diagram)
• Line output transistor fails repeatedly. after start-up.
• 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. (+ extract of circuit diagram)
• No horizontal synchronisation. (extract of circuit diagram attached)
• Unstable AFC. Noisy picture. (picture attached)
• Start with interfering voltage. (part of circuit diagram displayed)
• One single line in the middle of the screen. (+ extract of circuit diagram) (63KV5616 tip from SIERRA)
• Single dark lines in picture centre.
• Buzz in audio. (picture attached)
• Impossible to adjust horizontal shift of picture using R3595. (with circuit diagram extract) (63KV5616 SIERRA repair tip)
• No TXT. Intermittent green dots or lines through picture. Black screen.
• Replacement of TDA8451 (IC7305). (extract of circuit diagram attached)
• Capacitor 2545 in PSU burns. (part of circuit diagram displayed)
• Stretched picture. at top. Reduced raster size. at bottom. (+ extract of circuit diagram)
• PSU repeatedly blows up. (extract of circuit diagram attached)
• Vertical shift incorrect, after replacing a 28" BL-CRT. (with circuit diagram extract)
• Difficult horizontal and vertical adjustment and sawtooth at the side. (picture attached)
• Set not regulating after SOPS re-build of secondary side of PSU. (part of circuit diagram displayed) (63KV5616 SIERRA repair tip)
• Doesn't switch into standby. Green LED goes orange and flashes after pressing standby key .
• No picture and sound. Buzz from power supply transformer. (SIERRA - 63KV5616 information)
• Intermittent line and raster synchro. (extract of circuit diagram attached)
• No chopper power supply. (+ extract of circuit diagram)
• Vertical linearity is upwards a little sharp. Picture has shifted upwards. (+ extract of circuit diagram)
• No start-up with mains switch after switched off from standby.
• Green picture. after a while. (extract of circuit diagram attached)
• No picture. Bright raster. Flyback lines. Audio OK . (part of circuit diagram displayed)
• Blows chopper transistor. (+ extract of circuit diagram)
• EXT1 switchover is defective, terrestrial program remains.
• Intermittently line tearing in picture at the edges.
• Intermittent memory problem.
• TV starts, has raster but no image and no sound. Display shows "FO". (part of circuit diagram displayed)
• When switched to standby U1 becomes 60V. PSU goes to limiting. (part of circuit diagram displayed) (63KV5616 tip from SIERRA)
• Picture takes a long time to appear (several mins). (extract of circuit diagram attached)
• Mono/Stereo-indication switches. (extract of circuit diagram attached)
• Hum bar.
• Vertical foldover at top.
• When put into standby tube remains lit. Picture cuts out normally. (with circuit diagram extract)
• No button operation. intermittently. (with circuit diagram extract)
• Memory loss. (part of circuit diagram displayed) (63KV5616 tips)
• Poor audio. only on certain channels. Crackling audio.
• Frame shrinks horizontally when changing brightness. (extract of circuit diagram attached)
• BUT18 and rectifier bridge blow every two days even after modifications.
• No switching into CCIR standard. Display ok in SECAM and PAL/SECAM. (with circuit diagram extract)
• Intermittent picture size.
• Replacing the EEPROM. (+ extract of circuit diagram)
• No red. (extract of circuit diagram attached)
• Power supply crackles when power supply is low. (picture attached)
• Horizontal deflection BU fails after a few hours.
• Trips. (part of circuit diagram displayed)
• 148=68V. (picture attached)
• White screen. Flyback lines. Shuts down. after a few seconds. (with circuit diagram extract)
• Nasal sound on channels 5 and 6. (picture attached) (63KV5616 tip from SIERRA)
• No switch on. Noise from loud-speakers and smell of burning. (+ extract of circuit diagram)
• Power supply problem. (+ extract of circuit diagram)
• Set functions with the variac but BUT11AF blows when appliance is plugged in. (+ extract of circuit diagram)
• Appliance starts intermittently with no standby. (extract of circuit diagram attached)
• Red flashing when changing channels with VCR playback in the still, search modes or edit points in own recordings. (+ extract of circuit diagram)
• S/C on deflection circuit. (picture attached)
• Brightness differences in picture. (+ extract of circuit diagram)
• Vertical roll. when cold. (picture attached)
• Thyristor pos. 6670 fails. (+ extract of circuit diagram)
• Poor picture synchronisation during station switch-over. Vertical picture jitter, runs through, poor picture via RF or EXT. (+ extract of circuit diagram)
• Control micro processors.
• Poor vertical linearity. Horizontal size varies. (with circuit diagram extract)
• Mains fuse O/C and BUT S/C. (+ extract of circuit diagram)
• No or poor synchronisation.
• Line BU blows after a moment. (with circuit diagram extract)
• EHT problems. (picture attached)
• Switches off during operation. When it is switched on again crackling is heard from HT. (picture attached)
• Flickering text and apparent tuning drift. (63KV5616 SIERRA repair tip)
• No E/W.
• Pulsating, no start up. (+ extract of circuit diagram)
• Does not switch to standby. Picture remains on screen. (extract of circuit diagram attached)
• No picture. on lower half screen. (+ extract of circuit diagram)
• Line transformer noise. (with circuit diagram extract)
• No colours at start up 50% of the time on satellite channels. OK in HF and VCR. (picture attached)
• Line transistor 7545 fails after approx. 3 secs. (+ extract of circuit diagram)
• The resistors 3661 and 3662 burn in standby, TS7625 is also defective sometimes. (extract of circuit diagram attached)
• No function. On start-up easy chirp is audible. (picture attached)
• Blows chopper transistor when switching on with remote. (extract of circuit diagram attached) (63KV5616 tips)
• TXT has no function. TXT is activated but only dark screen.
• Error codes. (part of circuit diagram displayed) (SIERRA - 63KV5616 information)
• Vertical foldover at top and bottom. (picture attached) (63KV5616 SIERRA repair tip)
• Excessive brightness. (with circuit diagram extract)
• No adjustment from PSU possible. (part of circuit diagram displayed)
• No colour in SECAM and PAL. Colour may appear slightly in SECAM when warm. (with circuit diagram extract)
• Vertical deflection is defective. Picture present, after a short time a line appears then picture disappears. (picture attached)
• Intermittent black picture with TXT. Intermittent TXT in picture.
• Switching transistor in power supply goes short circuit (BUT18).
• After about 3 to 4 weeks of regular play, the BUT18 and the main fuse automatically blow. (picture attached)
• White area visible on right side of screen in EXT1 mode of BL sets. (part of circuit diagram displayed)
• Shuts down. after a while. LED blinks .
• Discharging noise. via speakers.
• PSU blown. (SIERRA - 63KV5616 information)
• PSU chirps. (part of circuit diagram displayed)
• Poor width regulation with brightness. (+ extract of circuit diagram)
• No quick start pulse. (part of circuit diagram displayed)
• Switching transistor T7625 has failed. (extract of circuit diagram attached)
• BUT18AF fails repeatedly. (extract of circuit diagram attached)
• Picture and sound drop out. Appliance jumps to channel 1.
• Cannot be switched to standby. After the first attempt appliance is blocked. (extract of circuit diagram attached)
• Dark picture with thin vertical stripe in upper picture. (+ extract of circuit diagram)
• Colour bar at right of screen. (with circuit diagram extract)
• Power supply fuse (18A) defective after 1 hr or less. (+ extract of circuit diagram)
• Replacing TDA2579. (extract of circuit diagram attached)
• No start-up from standby with RC.
• Line output transformer failure.
• Chroma fault in SECAM. (extract of circuit diagram attached)
• Thyristor fails in PSU in standby. Otherwise appliance OK. (part of circuit diagram displayed)
• With Blackline picture tubes in the EXT1-Mode a white field is visible on the right side. (service info for SIERRA -63KV5616)
• 6cm black bar at bottom of picture.
• No switch on. Red LED flickers for 3 seconds.
• Channel change impossible after a moment. Channel remains displayed and front LED becomes orange. (picture attached)
• Faulty TXT. (+ extract of circuit diagram)
• No OSD. intermittently. (extract of circuit diagram attached)
• Shuts down. after a while. (+ extract of circuit diagram)
• Intermittently BUT18 defective after switching on. (part of circuit diagram displayed)
• Horizontal line. Audio OK . (part of circuit diagram displayed)
• Dead. Soft ticking sound.
• No picture. in E-E. Audio OK .
• Top of TXT waves from side to side. (extract of circuit diagram attached)
• TV blocked in F3.
• No picture. No display. Erratic functions. (part of circuit diagram displayed)
• Horizontal, bright line.
• Line tearing and picture twitching at the sides of the picture.
• S/C in EHT stage. (+ extract of circuit diagram) (SIERRA - 63KV5616 information)
• No picture. after a while. White screen. (extract of circuit diagram attached)
• BUT18AF (T7625) becomes defective in standby. (with circuit diagram extract)
• Appliance works for 4 hours and then cuts out completely.
• Line tearing and picture quiver at the edges.
• 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)
• Ghosts and poor colours. (extract of circuit diagram attached)
• Dark screen and bright bar at the top. Clock is strange. Sound present. (part of circuit diagram displayed)
• Red picture. after a while. (picture attached)
• White picture with flyback lines. (extract of circuit diagram attached)
• Low contrast. (picture attached)
• Coloured flash on channel change and VCR features. (extract of circuit diagram attached)
• R3653 burns. (extract of circuit diagram attached) (service info for SIERRA -63KV5616)
• East/west raster distortion: width and shaping control do not function.
• Red standby light then dead at switch on. TV starts up on the variac. (+ extract of circuit diagram)
• The sound fails: after changing over to a different channel, the sound is back. (+ extract of circuit diagram)
• No synchronisation. when cold. (picture attached)
• U system only 5V instead 148V. (part of circuit diagram displayed)
• When cold, picture takes approx 2.5 mins to appear instead of 15 secs. When warm it takes 20 secs. (part of circuit diagram displayed)
• Dark picture. at bottom. Stretched picture. at top. (picture attached)
• Noise in picture. (picture attached)
• 185V instead of 148V. When taking a measurement on collector of TZ 7652, bulb goes off. (+ extract of circuit diagram)
• E/W fault. No E/W correction. (part of circuit diagram displayed)
• Occasionally picture seems to be coded on all the channels especially when cold. (+ extract of circuit diagram)
• No picture. No audio. OK via SCART . (picture attached)
• Poor RC sensitivity.
• Picture stretched at top, compressed at bottom with black bar. Picture improves when warm. (extract of circuit diagram attached)
• Starts up again then clicks after a few mins. PSU faled again. (part of circuit diagram displayed)
• No sound, even with in or out scart.
• Reduced horizontal size. after a while. (with circuit diagram extract)
• Low picture amplitude. Barrell-shaped picture. (part of circuit diagram displayed)
• Vertical roll. (+ extract of circuit diagram)
• Oval picture.
• No sound or picture. Snowy screen (picture with test signal). Vertical interference bars. (extract of circuit diagram attached)
• Blows components. after a few minutes. (with circuit diagram extract)
• Horizontal line. in the centre. (extract of circuit diagram attached)
• Character error.
• LED lights up for a moment. TV is dead. Light on the power supply sometimes functions. (extract of circuit diagram attached)
• PSU transistor (BUT18A) becomes defective right after start-up.
• Sound and picture pulsating (2 times a sec) only via tuner. (63KV5616 tips)
• Light green picture despite adjusting. Impossible to get red. (picture attached)
• BU508AF fails repeatedly. (picture attached)
• Power supply is low when warm. (extract of circuit diagram attached)
• When warm, picture foldover and the line BU blows. (+ extract of circuit diagram)
• BUT11 becomes defective after 3 days of use. (+ extract of circuit diagram)
• Operating voltage stabilises at 50V. (+ extract of circuit diagram)
• No picture. Audio and OSD OK .
• Snow on screen and no tuner reception. F3 displayed on screen. Green LED on.
• Intermittently blown Wickman fuse 1534.
• Picture jitters and vertical bars distorted on cross-hatched pattern. Blue horizontal bars. (picture attached)
• Slow start-up. Audio OK . (+ extract of circuit diagram)
• Poor regulation of the power supply. (+ extract of circuit diagram)
• White picture and no amplitude when cold. Picture pumping. (with circuit diagram extract)
• Fuse, bridge rectifier and BUT11 in PSU blow when in standby for 10 mins. (extract of circuit diagram attached)
• Horizontal output stage fails again after some time. (picture attached)
• TV locked by and keys.
• Dark screen. LED is green. (+ extract of circuit diagram)
• Repeated failure of CRT.
• Picture takes some time to appear. Dark screen then TV stops. Round colour spot which slowly disappears. (part of circuit diagram displayed)
• Switches to protection mode. (picture attached)
• Power supply too low (20V). (extract of circuit diagram attached)
• Picture size varies with picture content. (picture attached)
• Picture varies with beam current. (+ extract of circuit diagram)
• Power supply breaks down. (part of circuit diagram displayed)
• Ragged verticals.
• Intermittent colour.
• Jagged picture. (part of circuit diagram displayed)
• Interference in picture. when cold. (part of circuit diagram displayed)
• Microprocessor/eprom screening plate. (+ extract of circuit diagram)
• Blank raster. No tuning.
• Dark picture. Picture rolls. Picture shifted to the left. Flickering picture. (with circuit diagram extract)
• Defective SOPS. (part of circuit diagram displayed)
• White square in a corner of the screen. (with circuit diagram extract)
• No start-up. intermittently. (with circuit diagram extract)
• Doesn't function with dummy load. (picture attached)
• Dead set caused by lightning damage. (with circuit diagram extract)
• No picture. TXT OK . (extract of circuit diagram attached)
• BUT11A fails after operating for long time. (extract of circuit diagram attached)
• Local dooming. (part of circuit diagram displayed)
• Horizontal stripe. (+ extract of circuit diagram) (service info for SIERRA -63KV5616)
• TS7625 (BUT 18AF) fails again. (part of circuit diagram displayed)
• Switches immediately to protection mode. Functions OK when protection mode is switched off. (+ extract of circuit diagram)
• When switching on the appliance when it's cold, it takes about 35 seconds before the picture appears. (+ extract of circuit diagram)
• No functions. Power LED lit . (picture attached)
• 5.1V incorrect. (extract of circuit diagram attached)
• End stage transistor BU508 fails repeatedly at switch on. (part of circuit diagram displayed)
• Poor vertical linearity. Reduced vertical deflection. (with circuit diagram extract)
• Egg-shaped picture, picture is pushed upwards. Underneath 5cm black bar. (part of circuit diagram displayed)
• Vertical collapse. intermittently. (+ extract of circuit diagram)
• Frizzy lines on the picture.
• Power supply failure. (+ extract of circuit diagram)
• Switch on during standby only functions when RC is very close to the appliance.
• +120V instead of +148V. (+ extract of circuit diagram)
• PSU becomes defective after switch on via mains switch.
• Hum in audio. (with circuit diagram extract)
• No function. Buzzing noise. (extract of circuit diagram attached)
• Primary PSU switches off. No standby LED.
• Line transistor S/C.
• When switched off with RC, does not switch on again and LED remains off. (part of circuit diagram displayed)
• Service mode
• Vertical defective, too large line space in upper picture third. Linearity fault. (part of circuit diagram displayed)
• Voltage too low. (extract of circuit diagram attached)
• When warm, there is a raster fault on the left. (with circuit diagram extract)
• Intermittently green "F5" on screen, thereby very dark picture or TXT appears. (part of circuit diagram displayed)
• Local dooming / PP-settings. (picture attached)
• POR signal too low. (extract of circuit diagram attached)
• Works correctly but power supply BUT11 blows after 3 weeks. (+ extract of circuit diagram)
• Flash over on picture tube print.
• Poor NICAM sound from left hand speaker.
• Reduced horizontal size. Vertical foldover. in the centre. (with circuit diagram extract) (service info for SIERRA -63KV5616)
• Goes into safety mode if it is left in standby then switched on via the switch. Starts normally if speaker or HT O/C. (with circuit diagram extract)
• Raster signal problem.
• Does not store settings. (+ extract of circuit diagram)
• Goes to blank screen with unlocked TXT lines when TXT selected. (service info for SIERRA -63KV5616)
• High voltage unit is smouldered. (picture attached) (63KV5616 tip from SIERRA)
• In Standby BUT18AF (T7625) becomes defective.
• Black screen. Audio OK . (picture attached)
• Narrowing of line and frame then flashing of the picture. Screen turns dark after 10 mins. Picture ok when cold. (with circuit diagram extract)
• Line pairing at top half of the picture (extract of circuit diagram attached)
• In standby tries to operate spontaneously. (picture attached)
• Blurry picture.
• Black horizontal lines. (part of circuit diagram displayed)
• Dead. Error code F1 displayed.
• Picture is stretched - begins 5cms from bottom of the screen and is missing approx 1cm East/West. Appliance functions. (with circuit diagram extract)
• No colours. After approx an hour colours appear with fluctuations. (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.
• No horizontal synchronisation. when cold. (picture attached)
• BUT18 blows at 100V on the variac.
• Fails occasionally.
• Searches for channels continuously. (with circuit diagram extract)
• No function, only hums. (part of circuit diagram displayed)
• Appliance only functions until the 120V is reached with the variac. When the mains voltage is increased the appliance fails. (+ extract of circuit diagram)
• No picture. Audio OK . (with circuit diagram extract)
• Reduced raster size. (part of circuit diagram displayed)
• No synchronisation. intermittently. (+ extract of circuit diagram)
• No functions. LED lit. . (picture attached)
• Loss of red, green or blue or excessive red, green or blue pictures.
• No picture. intermittently. (part of circuit diagram displayed)
• Protection mode activated. (service info for SIERRA -63KV5616)
• Vertical bar. on the left. (part of circuit diagram displayed)
• No luminance. (with circuit diagram extract)
• Line output transformer overheats. (+ extract of circuit diagram)
• 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. (63KV5616 tips)
• Intermittently dead. (+ extract of circuit diagram)
• No picture. when cold. (with circuit diagram extract)
• BU508, Q7593 and Q7594 are defective. (part of circuit diagram displayed)
• Excessive vertical size. (extract of circuit diagram attached)
• Humming noise from transformer. in standby. (picture attached)
• 148V at approx 30V. (with circuit diagram extract)
• Over oscillations below collector BUT18. (+ extract of circuit diagram)
• Blank screen. Audio OK .
• Picture collapses. Pincushion distortion. (+ extract of circuit diagram)
• Vertical collapse. (extract of circuit diagram attached)
• Slow start-up. (part of circuit diagram displayed)
• 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)
• No audio. after a while. (with circuit diagram extract) (service info for SIERRA -63KV5616)
• No vertical synchronisation. (+ extract of circuit diagram)
• Defective line transistor. (+ extract of circuit diagram)
• Videotext has turbulent text content in upper section.
• Vertical deflection is defective. A piece is missing at the bottom and at the top the lines are pulled apart. (picture attached)
• Protective circuit starts up. (picture attached) (service info for SIERRA -63KV5616)
• Picture rolls. (extract of circuit diagram attached)
• Line end-stage has no function.
• Distorted TXT. at top.
• Picture looks as if it were encoded (like on C+ channel). Sound is OK.
• After switch on the picture is sometimes shifted and a black horizontal bar appears in the centre of the picture. (with circuit diagram extract)
• Undefined STEREO mono switch over. OSD mono STEREO display present. (+ extract of circuit diagram)
• Picture shakes.
• Picture shifted to the right. Poor synchronisation. (picture attached)
• Thyristor TR7670 breaks down after two days (loose contacts). (with circuit diagram extract)
• Picture width changes according to its content. Linear distortion on right and left sides over 5cm (no ondulation).
• 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)
• No HV. (+ extract of circuit diagram)
• BU508 defective after switching channel (when appliance is warm). (+ extract of circuit diagram)
• As the set warms up the picture flashes cyan every few seconds. (extract of circuit diagram attached)
• BUT18, R3570 and F1534 blow. (+ extract of circuit diagram)
• Ticking sound. (picture attached)
• Fails in standby. (part of circuit diagram displayed)
• No tuner reception. Search display functions well but appliance does not pick up any channel. (with circuit diagram extract)
• Starts, but only raster. Display shows "F3". (extract of circuit diagram attached) (63KV5616 tip from SIERRA)
• Picture linearity error. Picture has shifted towards top. Picture folds over at the bottom.
• Thyristor goes S/C when switched to standby. (part of circuit diagram displayed)
• Goes dead when switched to standby by RC. No standby LED. Switching on and off at mains, restores normal functions (picture attached)
• No audio. Picture OK . (+ extract of circuit diagram)
• SOPS power supply repeatedly becomes defective. (+ extract of circuit diagram)
• Lines on picture and sections blanked out. No TXT. (+ extract of circuit diagram)
• Horizontal white line. (extract of circuit diagram attached)
• Problems with flof TXT. Cannot find p.811 in spite of it being sent out. TXT header remains with subtitling. (+ extract of circuit diagram)
• No functions. intermittently. LED blinks . Shuts down. (+ extract of circuit diagram)
• Channels run through. (picture attached)
• Blue picture. after a while. (picture 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.
• Chopper and line output transistors S/C. (with circuit diagram extract) (63KV5616 tip from SIERRA)
• White picture on the right side in EXT1 mode.
• Dark background and a band of colour on the right. (with circuit diagram extract) (63KV5616 tip from SIERRA)
• S/C from point 18 at line transformer to the ground. (extract of circuit diagram attached)
• Switching transistor of the SOPS power supply is defective. (extract of circuit diagram attached)
• Horizontal size varies. (with circuit diagram extract)
• Buzzing from PSU. Motorboating noise from speakers. in standby. (+ extract of circuit diagram)
• Contrast variations with subtitling in sets with BL-CRT. (with circuit diagram extract) (63KV5616 tip from SIERRA)
• Dark picture. intermittently. (+ extract of circuit diagram) (SIERRA - 63KV5616 information)
• Lines in picture. on the left.
• Tuning unstable. (part of circuit diagram displayed)
• 100V power supply is approx 35V. (part of circuit diagram displayed)
• No control signal to IC7470 (TDA) and no line scanning. (+ extract of circuit diagram)
• Loud noise. (with circuit diagram extract)
• On the test picture, distorted, vertical lines at top and bottom of the screen. (with circuit diagram extract)
• Blocked. (part of circuit diagram displayed)
• Does not switch on from standby. LED blinks and goes off or changes to red and then no more functions.
• Flashing picture. (extract of circuit diagram attached) (63KV5616 tips)
• Occasionally BUT18 blows in standby. (+ extract of circuit diagram)
• Noise in audio.
• No 9V. (part of circuit diagram displayed)
• With Blackline picture tubes occasional or random OSD insertion.
• BUT11AF S/C. (+ extract of circuit diagram) (service info for SIERRA -63KV5616)
• CTV functions one day. (with circuit diagram extract) (63KV5616 tip from SIERRA)
• Shuts down. after a few minutes. (picture attached)
• Black screen. intermittently. (picture attached)
• Switches off after operation time. LED goes off. Dead. Can be turned on via mains switch, then switches off again after operation time. (63KV5616 SIERRA repair tip)
• Beam current dependent picture width fault. (part of circuit diagram displayed)
• No functions. Red LED blinks. (part of circuit diagram displayed)
• The output transistor of the power supply is defective. BUT11AF or 2SC3973B.
• No brightness. No audio. Raster OK . (with circuit diagram extract)
• Undefined Stereo Mono switchover.
• Chopper transistor (BUT18AF), rectifier diodes and mains fuse become defective instantly. (part of circuit diagram displayed)
• Reduced vertical size. (with circuit diagram extract)
• Too high power supply. (extract of circuit diagram attached)
• Vertical size varies. Vertical jitter.
• +16V flashover. (part of circuit diagram displayed)
• Sound only at program switch-over. (picture attached)
• Dark picture.
• PSU fuse blown. (part of circuit diagram displayed)
• No audio. intermittently. (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.
• No start-up. (part of circuit diagram displayed)
• S/C in 148V line. (with circuit diagram extract) (SIERRA - 63KV5616 information)
• Picture green and purple in the E/W direction. (63KV5616 tip from SIERRA)
• No TXT. (picture attached)
• PSU blocking. (+ extract of circuit diagram)
• Buzzing from PSU. in standby. (picture attached)
• Switches on for a few secs with extreme brightness. No picture. Sound OK. Goes into safety mode immediately after.
• Severe crossover distortion in left channel.
• Extra protection for chopper transistor TR7625 (BUT18AF). (with circuit diagram extract)
• No picture. F4 lights up in the display. (extract of circuit diagram attached)
• BU508 blows one min after HT transistor (BU508AF) has been replaced. Picture OK during this one min.
• Starts without picture and audio then switches off after a few seconds.
• To give improved protection to the BUT11AF chopper transistor TR7665.
• Picture flickers the first 5 minutes. Gradually becomes less but very visible in the dark portions of the screen.
• Picture flickers intermittently, sound disappears. Picture reappears by itself, sound doesn't but can be activated with the RC.
• Does not go into standby. LED becomes orange but picture remains. (picture attached)
• The bottom half of the raster is missing, with the top cramped.
• Power supply is often destroyed when left in standby. (extract of circuit diagram attached)
• Intermittent power supply shut down, the picture goes off for a split second, the display flickering in sympathy.
• No signal on the BUT11AF collector. (extract of circuit diagram attached)
• Coloured spots in picture (local dooming). (part of circuit diagram displayed)
• No picture or narrow streak after warm-up. (part of circuit diagram displayed)
• Blows fuse. after a few hours. (part of circuit diagram displayed)
• 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.
• Interference in picture. No picture. No audio. (with circuit diagram extract)
• Does not switch to standby, picture remains, sound mutes. (+ extract of circuit diagram)
• No raster. (picture attached)
• No teletext and OSD is hardly visible. The regular picture vibrates if appliance is switched to teletext. (with circuit diagram extract)
• Pincushion distortion at each side. Adjustment potentiometer does not correct fault. (picture attached)
• Wavy picture. via AV.
• BU508 blows after 1 or 2 days. (part of circuit diagram displayed)
• Power supply BU and fuse are defective when TV started up from standby. Occurs every week or fortnight and is very variable. (+ extract of circuit diagram)
• PSU no function.
• E-W output stage fails as soon as the appliance is switched on. Fuse 1534 (315mA) also fails. (with circuit diagram extract)
• Switches to protection mode. intermittently. (part of circuit diagram displayed)
• 17V instead of 140V. (with circuit diagram extract)
• Faded picture. No contrast. (picture attached) (63KV5616 tips)
• No picture. No brightness. No sound. Picture tube filament on.
• No colour. (with circuit diagram extract)
• Low contrast. in TXT. (extract of circuit diagram attached) (service info for SIERRA -63KV5616)
• Dead. intermittently.
• Defective BUT and fuse in the PSU. After replacing the appliance runs for several days until the fault occurs again. (extract of circuit diagram attached)
• Poor horizontal centering. (with circuit diagram extract)
• Can not be switched off in Standby position. When starting, LED becomes orange and blows. (picture attached)
• OSD partly disappeared from the screen in BL sets. (extract of circuit diagram attached)
• No TXT, just lines on screen.
• Picture leans too much to one side, Black line visible in the picture. (extract of circuit diagram attached)
• No horizontal synchronisation. intermittently. (extract of circuit diagram attached)
• Poor E/W adjustment. Picture is narrow in the middle. (picture attached)
• Arcing. Picture tearing. Does not synchronise. (+ extract of circuit diagram)
• Vertical stripes at left picture edge via channel 2 and 4. (part of circuit diagram displayed)
• No audio. when cold. No OSD. when cold. (part of circuit diagram displayed)
• At start up goes immediately into standby. 12C BUS blocks at 5V. (with circuit diagram extract)
• Horizontal stripe. intermittently. (with circuit diagram extract)
• Transistor 7545 (BU508AF) is blown. (part of circuit diagram displayed)
• Colour flickering during video editing.
• The picture is indented (horizontally).
• Poor frame linearity when cold. Picture is distorted vertically. (with circuit diagram extract)
• Does not switch to standby. Horizontal line. LED blinks . (part of circuit diagram displayed)
• No light lit. (part of circuit diagram displayed)
• Line output transformer does not start up. (with circuit diagram extract)
• Lacks contrast. No reaction on the plus or minus key of the contrast button. Other commands are ok.
• Black stripe on left edge of screen. Horizontal linearity is not correct. (part of circuit diagram displayed)
• Picture is too big or too small during horizontal amplitude adjustment.
• Power supply BU blows after a few days.
• No picture, teletext and sound are fine. (extract of circuit diagram attached)
• Dead. Red LED blinks. (part of circuit diagram displayed)
• +148V drops to 100V occasionally according to the tube output. (part of circuit diagram displayed)
• No sound or picture. Appliance appears to be in AV. (part of circuit diagram displayed)
• No output voltage.
• Picture is too wide or too small when adjusting horizontal size. (63KV5616 tip from SIERRA)
• Wavy picture. at top.
• Frayed vertical lines. (+ extract of circuit diagram)
• Snow on screen and no reception. F4 displayed on screen. Green LED lit. (extract of circuit diagram attached)
• Picture is affected by frizzy lines occasionally with crackling noise in the speakers and perhaps with a burnt smell. (+ extract of circuit diagram)
• Poor OSD. Unusual colour of some characters. (+ extract of circuit diagram)
• Picture jitters. when cold. (extract of circuit diagram attached)
• No tuning. intermittently. (part of circuit diagram displayed)
• Page 811 appears spontaneously. (+ extract of circuit diagram)
• Line output transistor defective. (part of circuit diagram displayed)
• Adjustment black line matrix.
• No blue. (extract of circuit diagram attached)
• Chopper transistor failure. (picture attached)
• No HT output voltage of 148V. Voltage is present (approx. 158V) when disconnecting HT coils connector. (+ extract of circuit diagram)
• PSU fails after a short time (S/C of BUT18AF). (extract of circuit diagram attached)
• Usys voltage of line output stage collapses to approx 48V. (picture attached)
• Secondary voltage cannot be adjusted lower than 160V. PSU however can be regulated with this voltage.
• Lower picture third is dark. Upper picture is dispersed. (with circuit diagram extract)
• Vertical shaking. (part of circuit diagram displayed)
• Horizontal shift no function.
• Reduced horizontal size. intermittently.
• Orange spots on the right of the screen.
• 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)
• 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)
• White screen.
• Line BU508blows after 3 days. (picture attached)
• Reduced vertical deflection. intermittently. (picture attached)
• Secondary voltages fall when loaded. (+ extract of circuit diagram)
• Appliance does not start up. Crackling. (picture attached)
• 148V measures 60V. (with circuit diagram extract) (63KV5616 tips)
• Transformation in K' (only for stereo versions). (with circuit diagram extract) (SIERRA - 63KV5616 information)
• BUT18AF blows in standby on the collector. (picture attached)
• PCD8582 and X2402 memory. (with circuit diagram extract)
• Reduced format, flyback line slightly visible. (+ extract of circuit diagram)
• Stuck on channel 1.
• Mono/stereo display error. (+ extract of circuit diagram) (service info for SIERRA -63KV5616)
• Defective BUT.
• Width of picture pumps according to picture content and narrows with a strong white. (part of circuit diagram displayed) (service info for SIERRA -63KV5616)
• No sound. No response to commands from both RC and front panel. Error message F2 on screen. Picture ok. (picture attached)
• Only grey picture after being struck by lightning. TXT also runs. (extract of circuit diagram attached)
• Connection of the loop system to the TV.
• Line output transistor fails repeatedly. (picture attached)
• No linearity. (extract of circuit diagram attached)
• Ragged picture.
• Tuning search does not stop when appliance has found a station. (with circuit diagram extract)
• Excessive horizontal size. Picture size varies with picture content. (with circuit diagram extract)
• Only pulsates once. Resistor R3661 in the 5V rail is burnt.
• Insufficient picture height which can be adjusted. Poor E/W.
• No start up. No front panel LED. Quiet noise from loud-speakers.
• Dark streak on screen.
• Vertical foldover at bottom. (+ extract of circuit diagram)
• No colour. when cold. Poor colour. after warm-up. (+ extract of circuit diagram)
• Local dooming, especially with high contrast. (with circuit diagram extract)
• Supply transistor BUT18A becomes defective immediately after switching on the appliance. (picture attached) (63KV5616 SIERRA repair tip)
• Crackle a few seconds after Power On. (extract of circuit diagram attached)
• Dark screen. via tuner. Audio and OSD OK . (+ extract of circuit diagram)
• Appliance starts up with the variac until it reaches 100V and then the appliance fails. (+ extract of circuit diagram)
• How to check the power supply without blowing BUT18AF.
• Occasionally standby thyristor 6670 S/C. (+ extract of circuit diagram) (63KV5616 tips)
• Shuts down. LED is green. (part of circuit diagram displayed)
• With high volume the appliance switches spontaneously to standby. (+ extract of circuit diagram)
• Horizontal end stage BU508AF short circuits after different playing times. (part of circuit diagram displayed)
• No functions. No button operation. (extract of circuit diagram attached)
• Tripping. intermittently.
• Dead. Humming noise from transformer. (with circuit diagram extract)
• Crackling from FBT and black vertical bars on screen for a few secs after start up. (extract of circuit diagram attached)
• Does not stop at stations. Station search OK. (extract of circuit diagram attached)
• Low brightness (even after turning up the preset in the U200 module).
• 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)
• Colour blobs in the picture. (63KV5616 tip from SIERRA)
• Slight E/W distortion. (part of circuit diagram displayed)
• PSU defective. (part of circuit diagram displayed)
• Set dead, power supply refuses to start. Also intermittent start and no standby (+ extract of circuit diagram)
• If mains switched off when in standby, it does not start up again. Light off. (with circuit diagram extract)
• Ballooning and incorrect picture linearity. (63KV5616 tip from SIERRA)
• Intermittent failure thyristor 6670 in STANDBY mode. (extract of circuit diagram attached)
• Switches to safety mode at approx. 110 V mains voltage. (with circuit diagram extract)