6688 / SBR [TV 55 (51) cm picture]

• Horizontal output transistor defective. (picture attached)
• Visible black, unsynchronised TXT klok.
• Intermittent or no vertical linearity. (+ extract of circuit diagram)
• Flyback lines. in PB. (picture attached)
• After about 7 days the vertical endstage IC TDA3650 blows again. All the voltages are ok. (picture attached)
• Intermittent loss of colour and picture sways. (picture attached)
• The TXT quivers when a V6100 tuner is connected. (extract of circuit diagram attached)
• Picture becomes warped. Reacts to brightness and contrast. When there is white in the picture this runs in a line from the left to the right of the picture. (6688 tip from SBR)
• Poor horizontal fringy picture. (extract of circuit diagram attached)
• "88" on the display. No picture. No sound. (picture attached) (service info for SBR -6688)
• Inverted E-E display, no picture, no sound. (extract of circuit diagram attached)
• Hums and crackling. LED flashes. (picture attached)
• Flashing picture when using RC. OK when operated manually. Reacts ok to vol, brightness and colour. Switches off when no. entered. Display lights briefly then switches to E3. Manual operation OK after switch off. No operation of RC. (with circuit diagram extract)
• Pictures bows at edges. Width can be adjusted. (picture attached)
• After switch-on no picture and sound, 88 in display. When mains switch pressed, snow. TXT and stereo LED lights.
• Blanking valency in picture (black bar in 3/4 of picture). (with circuit diagram extract)
• No sound if transmission is "mono". There is also no sound during stereo-transmission if the mono button is pressed. Otherwise stereo transmission is fine. (+ extract of circuit diagram)
• Jitter with VCR on freeze frame. (with circuit diagram extract)
• The sound goes erratically to max. volume. (part of circuit diagram displayed)
• At switch on there is a loud trumpeting and no picture. (picture attached)
• There is an occasional beating noise.
• Poor closure of function door. (6688 SBR repair tip)
• Defective after lightning. (picture attached)
• Horizontal lines across the picture, sometimes picture content in the middle of the screen disappears (then black bars across the picture). (with circuit diagram extract)
• No synchronisation.
• Vertical lock 1/3 of the way up the screen. (extract of circuit diagram attached)
• Instable picture. Picture height and picture width change depending on the volume. Picture folds over at the top.
• No colour when the appliance is switched on (cannot be programmed through memory), picture is dark.
• Linearity fault in upper part of screen.
• PSU and HV unit switch on, but no display and standby LED lights. No linearity.
• No start-up (when cold). (picture attached)
• Voltage slightly high. (+ extract of circuit diagram) (6688 tip from SBR)
• Front display corrupt, all segments lit to a varying degree. (+ extract of circuit diagram)
• When switching channels, TV stops for 1 sec.
• Picture synchronization in the top third of the screen. (extract of circuit diagram attached) (6688 tips)
• Whistling noise from FBT. (part of circuit diagram displayed)
• Picture unstable on certain stations when cold. Also TXT horizontally unstable.
• Hum in power supply audible. (part of circuit diagram displayed)
• On cable reception, stations cannot be tuned or the stations wander off.
• No LCD on front panel. (with circuit diagram extract)
• Switches off and on spontaneously, particularly when putting on a video film and when switching over.
• No E/W correction. at bottom. (+ extract of circuit diagram)
• TV starts up but EHT is missing. Programme number disappears, then "E1" appears.
• Switches to protection mode (intermittently). (part of circuit diagram displayed)
• Burn up in E/W correction circuit (R3170, R3175). (picture attached)
• Hums and crackles. Sound comes from loudspeaker and chassis. Flashing LED.
• Picture intermittently goes to negative or is shifted laterally.
• Poor RC sensitivity. (part of circuit diagram displayed)
• The sound contains noise, no low pitched sound. (extract of circuit diagram attached)
• Line output transistor fails repeatedly.
• Picture output IC defective after 2-3 weeks. (picture attached)
• Unstable picture. (+ extract of circuit diagram)
• Flyback lines. at top. (+ extract of circuit diagram)
• Slow start-up. (picture attached)
• Cycles on/off. after a few minutes. (service info for SBR -6688)
• Flyback lines. at top (in TXT). (picture attached)
• No picture, only sound present. When appliance is switched off a white line appears.
• Normal off air picture is fine but teletext is very dim with hardly any contrast. (picture attached)
• Switches to standby (after a few minutes). (part of circuit diagram displayed)
• Bright picture. Flyback lines. (SBR - 6688 information)
• Rolling picture and warps vertically. (part of circuit diagram displayed)
• Fuse 1101 fails continuously. (+ extract of circuit diagram)
• Distorted picture. (with circuit diagram extract)
• Vertical problems. (with circuit diagram extract)
• Spontaneous flash over in focus spark gap.
• All presettings disappear after turning on the appliance.
• No tuning. (+ extract of circuit diagram)
• No picture or sound after spark flashover in the HS cable. (+ extract of circuit diagram)
• E/W adjustment.
• Unknown indication in the display, no function.
• Raster shifted upward. Picture OK.
• Focus problems. Shuts down (after a few minutes). (with circuit diagram extract)
• E/W failure,temperature sensitive. (picture attached)
• Occasionally poor frame sync (line).
• Low audio. Distorted audio. (+ extract of circuit diagram)
• Switches to standby (after start-up).
• The TXT info appears at top of picture when cold. OK after 5 mins. (part of circuit diagram displayed)
• Distorted picture at high white proportion. (picture attached)
• PSU whistles. Line output transistor BU508 fails (S/C).
• Picture shifts downwards and then comes up again after a few minutes, picture is then o.k., but is round. (with circuit diagram extract)
• Vertical fault. Picture is approx 20cm high. Bright background with flyback lines. (6688 tips)
• No sound or picture. Screen in the black level. (service info for SBR -6688)
• Focus control replacement. (with circuit diagram extract)
• Peak white bright band approx. 4" across screen. Then set dead. (with circuit diagram extract)
• Hiccups when changing channels. (picture attached)
• Poor colour (when cold). (+ extract of circuit diagram)
• The appliance cuts out and E3 in the display then everything becomes normal again and after 30 secs the appliance cuts out again. (part of circuit diagram displayed) (6688 tips)
• Blank raster. (part of circuit diagram displayed) (6688 tips)
• Power supply trips at switch on, producing a fading whistle. (part of circuit diagram displayed)
• TV picture slightly visible when in TXT mode. (extract of circuit diagram attached)
• Sometimes when switched on set gives a squealing noise and no sound or vision. (+ extract of circuit diagram)
• Squealing from PSU. (part of circuit diagram displayed)
• Picture lacks width after 5mins from start-up. Displays E3. (+ extract of circuit diagram)
• The colour shimmers or fades. (part of circuit diagram displayed)
• Field flyback lines visible for a second or so when channel changed. They then disappeared. (+ extract of circuit diagram)
• Replacing line output transistor BU508.
• Horizontal lines (TXT data) on the top part of the picture. (picture attached) (6688 SBR repair tip)
• Voltages measured on pins IC TDA3650.
• Pincushion distortion. (part of circuit diagram displayed)
• After switch on program display P1, then E1. No functions. (with circuit diagram extract)
• Tuning voltage blocked on 33V or 0V (TRD sets).
• Adjustment.
• Top of picture is non linear with teletext lines. (part of circuit diagram displayed)
• Blows components (intermittently). (+ extract of circuit diagram)
• PSU switches frequently to protection mode (also when lamp is connected). (extract of circuit diagram attached)
• Muted audio. after a while. (part of circuit diagram displayed) (service info for SBR -6688)
• Misty picture. (picture attached)
• No TXT (intermittently). (with circuit diagram extract)
• Fine horizontal lines on picture, particularly during channel switch-over. Occasionally vertical sync. does not fit in with screen.
• Repeat failure of TDA3650 & 26V supply. (extract of circuit diagram attached)
• Picture rolls. (part of circuit diagram displayed)
• Very faint raster. (with circuit diagram extract)
• No picture or teletext, RGB/status line at 2V. (part of circuit diagram displayed) (6688 tips)
• No start up. PSU goes to protection circuit. (extract of circuit diagram attached)
• Picture horizontally unstable. (picture attached)
• No start up, displays E3. No 13V. (+ extract of circuit diagram)
• Wide white bar in the picture, no reception. (+ extract of circuit diagram)
• No picture, no sound, power supply squeaks because thyristor 6171 conducts. By temporarily removing the thyrister, measure the 141V for 5 seconds until 150V. Afterwards the appliance plays fine.
• TV switches to standby after approx 30 mins. E3 in display. (part of circuit diagram displayed)
• Vertical waves on both sides of picture. Unstable picture. (part of circuit diagram displayed)
• Dead (intermittently). Squealing from PSU. (with circuit diagram extract)
• Snowy raster. (with circuit diagram extract)
• Picture takes 10 mins to appear. (with circuit diagram extract)
• Intermittently dead. (picture attached)
• Lines in picture. at top . (+ extract of circuit diagram)
• Appliance functions only when warm. It fails intermittently when cold.
• Channel drifts briefly into UHF between approx channel 30 and 37.
• The line oscillator is unstable, the picture shakes. (part of circuit diagram displayed)
• Hum in picture. Contrast dependent effect. (picture attached)
• BU508 fails continuously. (extract of circuit diagram attached)
• Memory loss.
• Every 2-3 days TR7162 (BU508V) is destroyed.
• No horizontal deflection. (+ extract of circuit diagram)
• Does not stop at S channels during station search. Appliance should be suited to do so.
• Insufficient horizontal and vertical picture aamplitude. Smoke from R3177. (extract of circuit diagram attached)
• No colour. (part of circuit diagram displayed)
• No vertical synchronisation. (part of circuit diagram displayed)
• Bottom linearity faulty. (with circuit diagram extract)
• Channels "up and down" only work on the RC.
• Dead. No line drive. (picture attached)
• Dark picture (intermittently).
• No line drive to line output transistor (extract of circuit diagram attached)
• Very bright raster in the centre of the screen. No video signal content. Top and bottom third of screen are dark. (+ extract of circuit diagram)
• Poor vertical synchronisation. (+ extract of circuit diagram)
• Occasionally noise in TV (like short attempts to start up), picture width variation and display which disappears. (with circuit diagram extract)
• Only half of picture visible. (with circuit diagram extract)
• HT transistor blows continuously (short circuit).
• The focusing pot. blows. (picture attached)
• Error codes. (extract of circuit diagram attached)
• Vertical foldover at top. (extract of circuit diagram attached)
• No picture on teletext. (picture attached)
• Distorted picture. Snow in picture. (extract of circuit diagram attached)
• No picture just loud trumpeting noise. (part of circuit diagram displayed)
• Lines in picture. on the left. (+ extract of circuit diagram)
• Dark picture, also by TXT/Scart. Colour OK. (with circuit diagram extract)
• After installing the vertical ICs there are stripes in the top part of the picture. Electrolytic 3300uF is ok. (with circuit diagram extract)
• Poor vertical synchronisation. Intermittently flyback lines in lower quarter. (extract of circuit diagram attached)
• Picture jitters on the upper picture edge. Ok after 5 mins. (extract of circuit diagram attached)
• Faint raster. (picture attached)
• The appliance may cut out occasionally and then there is no more picture or sound.
• Temporary crackling from both speakers, then picture fails for a short time. Unfortunately fault no longer occurs at the moment. (picture attached)
• PSU is defective. (extract of circuit diagram attached)
• Brightness and or contrast don't work or don't work properly.
• Reduced horizontal size. (extract of circuit diagram attached)
• Signal/sync/timebase drive problems.
• Type of line transistor 7162. (picture attached)
• Raster IC defective after some time. (+ extract of circuit diagram)
• TXT-replacement.(4822 212 21008T). (picture attached)
• Normal values for brightness, volume and colour saturation cannot be stored.
• EHT arcing.
• Red picture (intermittently). (+ extract of circuit diagram) (6688 tip from SBR)
• Small picture. Picture height and audio volume vary according to picture content. (+ extract of circuit diagram)
• Picture is off tune in PB.
• The station memory loses the station programming after about 3 weeks.
• Muted audio. Picture OK .
• Power supply in safety mode, 140V=80V. Power supply fails. No result when unsoldering line transformer and loading power supply with a 75W lamp. (+ extract of circuit diagram)
• K9/K11 band switch. (SBR - 6688 information)
• When switching on, main supply reduces to about 24V and then no function.
• Switches to standby. Motorboating. Switches on and off. (Non-SOPS, IV-B-3) (extract of circuit diagram attached)
• Line tearing in upper third of picture after longer operation. (with circuit diagram extract)
• In the middle of the picture a stripe which is approx 15cm high appears over the entire picture width.
• Non-linearity on vertical sync. (extract of circuit diagram attached) (6688 SBR repair tip)
• Teletext only shows "P100" flying all over the screen out of sync, or shows a teletext page out of sync.
• Herringone pattern and upper channels are not accepted when tuning.
• Switches to standby after a few hours. Can be switched on again but fault reoccurs. Interim period becomes shorter.
• East-west raster correction fault. (extract of circuit diagram attached)
• The picture is nearly or completely invisible if a CDI player is connected on K40 full SCART (RGB) and the screen dimmer is activated. (part of circuit diagram displayed)
• Pincushion effect on vertical straight lines. (picture attached)
• Power supply cuts out suddenly and whistles. Ok if line BU removed. (extract of circuit diagram attached)
• Coloured spots in flat square picture tubes.
• Blanking of the raster, starting at bottom of the picture. (picture attached)
• Vertical waves when switching from TXT to normal picture.
• No picture (intermittently). (part of circuit diagram displayed)
• Only starts up after pressing ON/OFF switch a few times. (+ extract of circuit diagram)
• Horizontal collapse. after warm-up. No E/W correction. intermittently.
• Whistling from PSU. (extract of circuit diagram attached)
• Brightness and colour saturation influence each other. (part of circuit diagram displayed)
• Mains switch and speech-music switch.
• Occasionally thin white lines, picture bounce at the side and top edge.
• There is an occasional banging noise, the picture shakes. (with circuit diagram extract)
• Dark screen. R3186 blows up. What is the value of R3186? (+ extract of circuit diagram) (SBR - 6688 information)
• When calling up TXT page, 2nd digit is incorrectly reproduced, yet correct page appears.
• Picture overbright on left hand side with vertical lines.
• East/West fault.
• Intermittent no signals, then will rest to CH1 with volume high.
• Channel indicators permanently display 88. Hissing from EHT capacitor. (with circuit diagram extract)
• Blanking fails, lines run through and sound is . (part of circuit diagram displayed)
• Intermittently parallel stripes on one part of the screen. Shock sensitive.
• Flyback lines. when changing channels. (+ extract of circuit diagram)
• Tuning drifts. Snowy raster. (picture attached)
• Switches off by itself. (SBR - 6688 information)
• Blank raster. Audio OK . (part of circuit diagram displayed) (6688 tips)
• Picture width twitches. Beam current dependent. (extract of circuit diagram attached)
• TDA3650 fails after one week. (extract of circuit diagram attached)
• The display reacts but the tuning does not. (6688 SBR repair tip)
• No audio. Picture OK . (+ extract of circuit diagram)
• Blank screen (intermittently). (picture attached)
• E/W fault. (part of circuit diagram displayed)
• Erratic functions. (with circuit diagram extract)
• No function. No start up. (SOPS, IV-F-3). (+ extract of circuit diagram)
• No raster. Audio OK . (extract of circuit diagram attached)
• Vertical sync remains occasionally halfway down the frame although it locks correctly. (picture attached)
• No audio. (with circuit diagram extract) (SBR - 6688 information)
• Teletext only shows a green notice "P100" running on the screen, or Teletext is displayed but out of sync.
• No TXT with the CCT decoder system. (+ extract of circuit diagram) (service info for SBR -6688)
• After operating for 12-14 days, the line-BU blows. (extract of circuit diagram attached)
• Switches on, but no EHT available. Channel number disappears and then "E1" is displayed.
• Flyback lines in TXT broadcasts. Upper vertical linearity is defective. (extract of circuit diagram attached)
• Stuck in standby. (with circuit diagram extract)
• Very loud sound, cannot be adjusted. No display. (picture attached)
• Muted audio. intermittently.
• Picture vibrates horizontally. Broken or intermittently double bar. (part of circuit diagram displayed)
• No functions. (extract of circuit diagram attached)
• Starts with E1 and intense fizzling sound. No picture or sound. (with circuit diagram extract) (SBR - 6688 information)
• Blurred screen. Shifted tuning. Unable to adjust with fine tuning. Sometimes tuning doesn't lock in on stations.
• Black stripes over the whole screen.
• TXT lines at top of picture. (part of circuit diagram displayed)
• Occasionally the channel memory or the preselector do not work.
• Vertical linearity defective. (part of circuit diagram displayed)
• No picture. after a few seconds. (with circuit diagram extract)
• No picture. intermittently. (picture attached)
• Picture OK but display only shows signs.
• No functions. at start-up. Whistling. at switch-off.
• Excessive brightness. (with circuit diagram extract) (SBR - 6688 information)
• Transistors TR7131, TR7122 and TR7123 blown. (extract of circuit diagram attached) (6688 tip from SBR)
• Rolling picture for 5 secs after switching from VHF to UHF. Poor raster synchronisation.
• No colour. Audio and picture OK . (with circuit diagram extract)
• Switches to standby (intermittently). (extract of circuit diagram attached) (SBR - 6688 information)
• No synchronisation. intermittently. Picture shakes. (with circuit diagram extract)
• No sound or vision and E3 on the display. (extract of circuit diagram attached)
• No picture. When switched on, display shows 5 (no bottom segment) and EXT4. E3 after a few secs. (with circuit diagram extract)
• Predominance of blue, faint blue flyback lines visible. (part of circuit diagram displayed)
• TXT-lines in picture for three seconds at switch over. Then perfect picture. (+ extract of circuit diagram)
• No line osc. (extract of circuit diagram attached)
• Dark picture. at bottom (after a while). (with circuit diagram extract)
• E/W-error, trapezium distortion. (extract of circuit diagram attached)
• Red picture. (part of circuit diagram displayed)
• On/off LED flickering. All front panel symbols light up but no control. (+ extract of circuit diagram)
• Vertical foldover at bottom. (+ extract of circuit diagram)
• Dark picture. Audio OK . (picture attached) (6688 tips)
• 2R2 resistor always blows. (part of circuit diagram displayed)
• Predominance of one of the three colours (red, green or blue).
• Faint white streaks above the picture. (picture attached)
• Lines at the top of the picture depending on the picture content. (part of circuit diagram displayed)
• No red. (extract of circuit diagram attached)
• Horizontal power stage squeaks.
• East/west correction is defective or the power supply gurgles. (extract of circuit diagram attached)
• The picture is much too wide, east/west does not control. (extract of circuit diagram attached)
• Poor IF gain. (extract of circuit diagram attached)
• Upper vertical linearity defective. Flyback lines on TXT broadcasts. (part of circuit diagram displayed)
• No drive at BU826. (with circuit diagram extract)
• Whines loudly at switch on and will not start up. (+ extract of circuit diagram) (6688 SBR repair tip)
• Line output stage transistor BU508 fails approx every 6 days. (picture attached)
• Herringbone pattern on raster. High channels are not accepted when tuned.
• High-voltage flash-over. (picture attached)
• The vertical lines are ribbed, especially in the test picture. (with circuit diagram extract)
• Repeated failure of BU508A line output transistor. (+ extract of circuit diagram)
• Line oscillator chip failure after an EHT flashover. (extract of circuit diagram attached)
• No picture at start up. Channel storage ok. Sound, colour, contrast and brightness balance are not stored.
• No line drive. (picture attached)
• Too much brilliance of one cathode of picture tube.
• No remote control operation on teletext version. (with circuit diagram extract)
• The picture is too small. The power supply is too weak. (with circuit diagram extract)
• Failure of field output chip TDA3650. (extract of circuit diagram attached)
• Power supply whistling and the BU508 is S/C. (part of circuit diagram displayed)
• V resistor 3186 (2R2/raster unit) burns at switch on. (with circuit diagram extract)
• No start-up. (extract of circuit diagram attached)
• C/P button on the front control does not function.
• Picture has shifted inwards in lower picture section. (extract of circuit diagram attached)
• Loses frame correction slowly. (+ extract of circuit diagram)
• Dim picture. in TXT. No contrast. in TXT. (picture attached)
• No raster. (part of circuit diagram displayed)
• Goes into standby with E3 and a few seconds later goes to function. (picture attached)
• The appliance often becomes intermittent when switched on. (part of circuit diagram displayed)
• Frame foldover & text interference at top of screen. (picture attached)
• BU826 and main fuse are defective. When starting after replacement, the power supply hiccups once and is defective again. (picture attached)
• All LCD segments are lit. LED flashes abnormally. (part of circuit diagram displayed)
• No tuning. only on certain channels.
• No picture. Loud fizzling noise from line deflection. (extract of circuit diagram attached)
• Destroys line output transistors. (with circuit diagram extract)
• No picture. intermittently. HV OK. . (+ extract of circuit diagram)
• Line output transistor (BU508) defective. (part of circuit diagram displayed)
• Picture darkens (after disappearance of green bar) after tuning and storing channel in memory. No adjustment possible.
• Line transformer installation.
• Horizontal jitter. (part of circuit diagram displayed)
• Appliance fails. BU508A will become defective and displays E-3. Power supply squeaks. (extract of circuit diagram attached) (service info for SBR -6688)
• Muted audio. (extract of circuit diagram attached)
• Starts up gradually. (extract of circuit diagram attached) (6688 tips)
• Cycles on/off. (6688 tip from SBR)
• Deflection BU fails after approx. 1-2 weeks.
• No tuning, channel no etc. with the standby LED permanently on (sets with 1021 VST module).
• No picture. Sound available. Intermittently picture appears for 1 sec.
• Volume too high. Excessive colour and incorrect brightness at switch on.
• Code numbers for picture tube prints.
• Visible flyback lines and colour tints problems. (part of circuit diagram displayed)
• No STEREO.
• No start-up. intermittently. Squealing noise. (with circuit diagram extract)
• Picture bounces in upper picture third if a poor signal is present at aerial input. Vertical lines twist. (extract of circuit diagram attached)
• No TXT. (extract of circuit diagram attached)
• Black streaky lines after a few mins. Completely dark picture after approx 5 mins. (part of circuit diagram displayed)
• Hum in picture. Error disappears after approx10 mins operation.
• PSU hiccups.
• Power supply BU blows. (part of circuit diagram displayed) (6688 tips)
• Poor picture. (picture attached)
• Rope effect on the right hand side of the picture. (picture attached)
• Line deflection BU508V blows.
• No adjustment of sound. (picture attached)
• Repeated power supply failure. (part of circuit diagram displayed)
• Stereo problems; switching from mono/stereo. Crackling sounds. (+ extract of circuit diagram)
• Sparks on the yoke plug. High voltage is 1500Vpp instead of 1200Vpp. Working voltage 130V is ok. (picture attached)
• Trapezium ininformation. (with circuit diagram extract)
• No brightness. No colour. intermittently.
• Safety test after repair.
• Conversion from TRD to TRD-ECO. (6688 SBR repair tip)
• 300V from power supply.
• Doesn't switch to standby. Standby LED OK, no display, but picture and sound remains.
• LED display goes off after a few minutes. If the channel is changed however, either using the remote control or the buttons on the set, display return for a few minutes.
• Poor E/W. Centre of picture is pulled inwards. (extract of circuit diagram attached) (6688 tip from SBR)
• Black screen. Audio OK . (with circuit diagram extract) (6688 SBR repair tip)
• Goes into standby each time channel is changed manually or by the RCU.
• Changing channel. (with circuit diagram extract) (6688 SBR repair tip)
• No power supply regulation. (with circuit diagram extract)
• Too little brightness after DIM command (CDI use). (+ extract of circuit diagram)
• Frequency divider 4822 212 21226.
• Switches to standby. (part of circuit diagram displayed)
• No picture. Green and pink raster at the top. (with circuit diagram extract) (6688 tips)
• Processor for TRD4 control panel.
• E/W fault. Trips. (+ extract of circuit diagram)
• Non linear picture. (+ extract of circuit diagram)
• Doesn't lock in on channels or stops but tuned off. (picture attached)
• No colour. IC-TDA3562 has been changed with no result. There must be 2-4V on pin 6 but there is only 0.4V. (with circuit diagram extract)
• White lines, no focus, too much brightness. 15cm in the middle of the picture. (+ extract of circuit diagram)
• Line tearing. at top. (extract of circuit diagram attached)
• Poor focus. (picture attached) (6688 SBR repair tip)
• Low contrast. in TXT. (picture attached)
• Intermittent loss of sound and vision, with just snow and no channel display. (picture attached)
• Beam limiter problem. (picture attached)
• Noise in picture. (picture attached)
• No channel storing.
• Whistling. No error display.
• Noise line on one side of screen. (extract of circuit diagram attached)
• In display all segments lit.
• Memory values for picture, sound and channels are lost. (picture attached)
• Vertical line. (+ extract of circuit diagram)
• No function or display when first switched on. Starts up OK at second attempt. (+ extract of circuit diagram)
• Picture-sound-display is intermittent. (extract of circuit diagram attached)
• Coloured lines and sloping picture. (part of circuit diagram displayed)
• Line pulling/frame jitter. (+ extract of circuit diagram)
• Flashover then weak contrast. (with circuit diagram extract)
• No function, the 141V power supply voltage is only approx 80V. (part of circuit diagram displayed) (6688 SBR repair tip)
• Blank raster, turning up A1 control shows frame collapse. (part of circuit diagram displayed)
• One colour missing (intermittently). (picture attached)
• No MONO audio. STEREO OK . (6688 tip from SBR)
• Picture shakes. at top (intermittently). (part of circuit diagram displayed)
• Output signal is occasionally O/C when shown on oscilloscope. (service info for SBR -6688)
• Display shows functions which were not chosen. (+ extract of circuit diagram)
• No E/W correction. (picture attached)
• How to store personal preferences (PP).
• Difficulties in tuning on channel. (extract of circuit diagram attached)
• No picture just very bright raster at centre of screen. (part of circuit diagram displayed) (SBR - 6688 information)
• Occasionally picture darkens and at the same time raster disappears. (extract of circuit diagram attached)
• Picture bends at top and vibrates. (with circuit diagram extract)
• Poor audio. only on one channel. (part of circuit diagram displayed)
• Switches to protection mode (after a few minutes). (+ extract of circuit diagram)
• Rectification of IM 84VK049. (+ extract of circuit diagram)
• Video and bottom half of scan are missing with extremely bright raster. (part of circuit diagram displayed)
• Start up from standby after 2 secs. (with circuit diagram extract)
• No function, 142V is present but R3292 (680R) blows continuously.
• East/west code. The sound disappears, the picture is vague and the appliance constantly arches stations.
• The power supply goes to protection circuit. (picture attached)
• No start-up. Audible noise.
• Reduced vertical size. (extract of circuit diagram attached)
• No display. No channel search. Picture OK . (part of circuit diagram displayed)
• Total loss of memory immediately after CTV is switched off (brightness, colour, contrast, sound and channels). (part of circuit diagram displayed)
• All memory-cells on 56.
• No picture. Display OK .
• Dark picture. (picture attached) (6688 tip from SBR)
• Picture is erased at 8-10 sec intervals. (+ extract of circuit diagram)
• The appliance gurgles occasionally. (extract of circuit diagram attached)
• Only noise the display does not light up.
• No image or sound after start up. Does not lock channels. After 1-2 minutes it comes back to normal. (picture attached)
• Test picture visible in the background in TXT mode. (part of circuit diagram displayed) (service info for SBR -6688)
• Bright white line in picture, no sound. (part of circuit diagram displayed)
• No vertical deflection. (part of circuit diagram displayed)
• No TXT the indication light lights up. (with circuit diagram extract)
• Top of picture has non linear scan, ok when appliance has warmed up. (picture attached)
• The sound cuts out occasionally. Only FM noise is heard through the loud speakers. (part of circuit diagram displayed)
• Green lines. (+ extract of circuit diagram)
• Low audio. (part of circuit diagram displayed)
• No picture. (with circuit diagram extract) (6688 tips)
• Picture collapses in RF every 2 seconds. Picture OK via scart.
• BU504 blows after 30 mins. (with circuit diagram extract)
• Poor E/W adjustment with changes in contrast.
• No startup. Banging noise audible.
• Picture runs from left to right, especially on bright pictures. (SBR - 6688 information)
• Lightning flash; K40 and KT4 are very sensitive to induction voltage. (part of circuit diagram displayed)
• No picture, no sound. Appliance squeaks when switching on then stops. BU508 of the line end stage is ok. Yellow capacitor has also already been changed. (with circuit diagram extract)
• Critical adjustment with user controls. Sometimes it works properly when tapping on cabinet.
• Arcing. (picture attached)
• The line end stage transistor 7162 heats up. The base and collector pulses are ok, the transistor blows. (extract of circuit diagram attached)
• Line BU goes S/C every fortnight. (extract of circuit diagram attached)
• Tripping. (part of circuit diagram displayed) (6688 tip from SBR)
• Set intermittent dead, when faulty E1 displayed. (extract of circuit diagram attached)
• Excessive horizontal size. at top. (part of circuit diagram displayed)
• Channel loss at switch on after memorising channels. (+ extract of circuit diagram) (6688 tips)
• Picture is distorted on top. Flyback lines. Picture changes according to picture content. (extract of circuit diagram attached)
• Intermittently picture blanks for approx 1 sec. (extract of circuit diagram attached)
• Only half of picture and there is a lot of light. (part of circuit diagram displayed)
• Squealing noise. (with circuit diagram extract)
• Switches to program 1, but no function. Whistles.
• Set does not go to standby although the LED is lit up. (+ extract of circuit diagram)
• PSU and line transformer chirp. (part of circuit diagram displayed)
• Screen compressed at the bottom and very quick vertical drift of picture. (with circuit diagram extract)
• Sometimes no vertical deflection; random cramping at top of picture. (picture attached) (SBR - 6688 information)
• No horizontal synchronisation. (picture attached) (6688 SBR repair tip)
• The power supply unit shuts off after some time and squeaks. (picture attached)
• No function, stand-by connection has voltage.
• Searches for channels continuously. (+ extract of circuit diagram)
• No picture. Audio OK . (with circuit diagram extract)
• E/W convex. (6688 tip from SBR)
• After it has been replaced line BU blows every 2 to 3 days. (part of circuit diagram displayed)
• Picture shifts and jitters depending on picture content.
• Incorrect TXT, ie. instead of a 6, an 8 will appear, or the appliance goes back to regular picture position. (part of circuit diagram displayed)
• Intermittently loses vertical sync. Black line slowly moving up and down picture. Picture and sound OK. (part of circuit diagram displayed)
• Vertical collapse. (part of circuit diagram displayed) (6688 tip from SBR)
• Switches to protection mode (after a while). (+ extract of circuit diagram)
• The picture appears then disappears. T26 after D6106, varies from 25 to 10Vcc. (part of circuit diagram displayed)
• Horizontal sychronisation is distorted. (part of circuit diagram displayed)
• Poor VCR line synchronisation . (with circuit diagram extract)
• Horizontal deflection is poor. (with circuit diagram extract)
• No REC and PB. PSU hiccups. (extract of circuit diagram attached)
• No RC functions. (+ extract of circuit diagram)
• Problems with the vertical deflection, picture folds at the top edge. (with circuit diagram extract)
• Very loud sound, not adjustable. No display.
• UPD8049PC SAA063 has been changed. The display shows 80.
• Shakey picture. No sound on some channels. Appliance starts. (with circuit diagram extract)
• After switching on occasional crackling from the speakers. Picture content therefore fails for a short time. Somehow there is still something to recognise on the screen. Line deflection must be present. (part of circuit diagram displayed)
• Interference on channel 2 with TRD 4 system. (extract of circuit diagram attached)
• Approx 5cm distortion on top of picture with any station, in cold conditions. (extract of circuit diagram attached)
• Picture too large, E/W indented. (6688 SBR repair tip)
• No start up and humming.
• Power supply BU S/C. (part of circuit diagram displayed)
• No function, no sound, no display and no HT. Only a faint switch-on thud in speakers.
• Sound becomes lower after switch on. (extract of circuit diagram attached)
• No picture. in UHF. (with circuit diagram extract)
• Vertical IC defective after mounting. (picture attached) (6688 SBR repair tip)
• No audio. OK via SCART . (picture attached)
• Vertical blanking interval still visible in picture after program switch over. (part of circuit diagram displayed) (6688 SBR repair tip)
• Occasionally picture runs through (line).