6689 / SBR [TV 55 (51) cm picture]

• Dark picture, also by TXT/Scart. Colour OK. (part of circuit diagram displayed)
• Picture bends at top and vibrates. (+ extract of circuit diagram)
• Vertical waves when switching from TXT to normal picture.
• No picture at start up. Channel storage ok. Sound, colour, contrast and brightness balance are not stored.
• Replacing line output transistor BU508.
• Coloured lines and sloping picture. (extract of circuit diagram attached)
• Horizontal sychronisation is distorted. (part of circuit diagram displayed)
• Vertical line. (with circuit diagram extract)
• Snowy raster. (extract of circuit diagram attached)
• Picture rolls. (picture attached)
• Picture collapses in RF every 2 seconds. Picture OK via scart.
• No image or sound after start up. Does not lock channels. After 1-2 minutes it comes back to normal. (part of circuit diagram displayed)
• Rectification of IM 84VK049. (+ extract of circuit diagram)
• Video and bottom half of scan are missing with extremely bright raster. (extract of circuit diagram attached)
• Whines loudly at switch on and will not start up. (part of circuit diagram displayed)
• Appliance functions only when warm. It fails intermittently when cold.
• No start-up. Audible noise.
• Stuck in standby. (+ extract of circuit diagram)
• White lines, no focus, too much brightness. 15cm in the middle of the picture. (part of circuit diagram displayed)
• Too much brilliance of one cathode of picture tube.
• The picture appears then disappears. T26 after D6106, varies from 25 to 10Vcc. (with circuit diagram extract) (6689 tip from SBR)
• Poor vertical synchronisation. Intermittently flyback lines in lower quarter. (with circuit diagram extract)
• Dark picture (intermittently).
• Stereo problems; switching from mono/stereo. Crackling sounds. (picture attached)
• No picture. Green and pink raster at the top. (extract of circuit diagram attached)
• Vertical foldover at bottom. (part of circuit diagram displayed)
• Flyback lines in TXT broadcasts. Upper vertical linearity is defective. (+ extract of circuit diagram)
• Searches for channels continuously. (picture attached)
• Burn up in E/W correction circuit (R3170, R3175). (with circuit diagram extract)
• No vertical deflection. (with circuit diagram extract)
• The sound cuts out occasionally. Only FM noise is heard through the loud speakers. (part of circuit diagram displayed)
• Faint raster. (+ extract of circuit diagram) (SBR - 6689 information)
• Whistling from PSU. (with circuit diagram extract)
• Doesn't lock in on channels or stops but tuned off. (picture attached)
• Pictures bows at edges. Width can be adjusted. (extract of circuit diagram attached)
• Picture darkens (after disappearance of green bar) after tuning and storing channel in memory. No adjustment possible. (6689 tip from SBR)
• Horizontal lines across the picture, sometimes picture content in the middle of the screen disappears (then black bars across the picture). (part of circuit diagram displayed)
• Occasionally the channel memory or the preselector do not work.
• Channel drifts briefly into UHF between approx channel 30 and 37.
• No raster. (extract of circuit diagram attached)
• C/P button on the front control does not function.
• No function. No start up. (SOPS, IV-F-3). (extract of circuit diagram attached)
• Sound becomes lower after switch on. (+ extract of circuit diagram)
• Black streaky lines after a few mins. Completely dark picture after approx 5 mins. (part of circuit diagram displayed)
• No colour. IC-TDA3562 has been changed with no result. There must be 2-4V on pin 6 but there is only 0.4V. (extract of circuit diagram attached)
• Approx 5cm distortion on top of picture with any station, in cold conditions. (part of circuit diagram displayed)
• Power supply in safety mode, 140V=80V. Power supply fails. No result when unsoldering line transformer and loading power supply with a 75W lamp. (with circuit diagram extract)
• Safety test after repair.
• Low contrast. in TXT. (with circuit diagram extract)
• Black screen. Audio OK . (+ extract of circuit diagram)
• When switching on, main supply reduces to about 24V and then no function.
• 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. (with circuit diagram extract)
• TXT-replacement.(4822 212 21008T). (extract of circuit diagram attached)
• After operating for 12-14 days, the line-BU blows. (+ extract of circuit diagram)
• Flyback lines. in PB. (with circuit diagram extract)
• Occasionally picture runs through (line).
• No raster. Audio OK . (picture attached)
• Hum in power supply audible. (extract of circuit diagram attached)
• No line osc. (picture attached)
• No picture (intermittently). (part of circuit diagram displayed)
• Jitter with VCR on freeze frame. (part of circuit diagram displayed)
• Starts up gradually. (part of circuit diagram displayed)
• Type of line transistor 7162. (+ extract of circuit diagram)
• Picture shifts downwards and then comes up again after a few minutes, picture is then o.k., but is round. (picture attached)
• Hum in picture. Contrast dependent effect. (+ extract of circuit diagram)
• Poor horizontal fringy picture. (part of circuit diagram displayed)
• No picture just very bright raster at centre of screen. (with circuit diagram extract)
• When calling up TXT page, 2nd digit is incorrectly reproduced, yet correct page appears.
• Vertical problems. (picture attached)
• Vertical foldover at top. (extract of circuit diagram attached)
• E/W-error, trapezium distortion. (with circuit diagram extract)
• Noise in picture. (part of circuit diagram displayed)
• Vertical linearity defective. (picture attached)
• Spontaneous flash over in focus spark gap.
• Goes into standby with E3 and a few seconds later goes to function. (+ extract of circuit diagram)
• Goes into standby each time channel is changed manually or by the RCU.
• Picture width twitches. Beam current dependent. (picture attached)
• Peak white bright band approx. 4" across screen. Then set dead. (part of circuit diagram displayed)
• No start up and humming. (service info for SBR -6689)
• Picture shifts and jitters depending on picture content.
• Switches to standby (intermittently). (part of circuit diagram displayed)
• Front display corrupt, all segments lit to a varying degree. (part of circuit diagram displayed)
• No picture. in UHF. (part of circuit diagram displayed)
• Display shows functions which were not chosen. (picture attached)
• No STEREO.
• No TXT. (extract of circuit diagram attached)
• Vertical waves on both sides of picture. Unstable picture. (picture attached)
• BU504 blows after 30 mins. (extract of circuit diagram attached)
• No TXT (intermittently). (extract of circuit diagram attached)
• Changing channel. (+ extract of circuit diagram)
• Very faint raster. (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. (part of circuit diagram displayed)
• Whistling noise from FBT. (part of circuit diagram displayed)
• Line output transistor (BU508) defective. (+ extract of circuit diagram)
• Hiccups when changing channels. (picture attached)
• V resistor 3186 (2R2/raster unit) burns at switch on. (picture attached)
• Poor colour (when cold). (with circuit diagram extract) (6689 SBR repair tip)
• Transistors TR7131, TR7122 and TR7123 blown. (part of circuit diagram displayed)
• No TXT with the CCT decoder system. (+ extract of circuit diagram)
• PSU and line transformer chirp. (extract of circuit diagram attached)
• 300V from power supply.
• Poor audio. only on one channel. (extract of circuit diagram attached)
• No tuning. only on certain channels.
• The TXT quivers when a V6100 tuner is connected. (extract of circuit diagram attached)
• "88" on the display. No picture. No sound. (extract of circuit diagram attached)
• In display all segments lit.
• Picture jitters on the upper picture edge. Ok after 5 mins. (picture attached) (SBR - 6689 information)
• Sometimes when switched on set gives a squealing noise and no sound or vision. (picture attached)
• After it has been replaced line BU blows every 2 to 3 days. (picture attached) (6689 tips)
• Appliance fails. BU508A will become defective and displays E-3. Power supply squeaks. (+ extract of circuit diagram)
• No horizontal deflection. (extract of circuit diagram attached)
• East/west correction is defective or the power supply gurgles. (with circuit diagram extract)
• Occasionally poor frame sync (line).
• The TXT info appears at top of picture when cold. OK after 5 mins. (part of circuit diagram displayed)
• Focus problems. Shuts down (after a few minutes). (with circuit diagram extract)
• No picture. When switched on, display shows 5 (no bottom segment) and EXT4. E3 after a few secs. (+ extract of circuit diagram)
• Poor closure of function door.
• Muted audio. (+ extract of circuit diagram)
• No tuning, channel no etc. with the standby LED permanently on (sets with 1021 VST module).
• Screen compressed at the bottom and very quick vertical drift of picture. (picture attached)
• Dark picture. (extract of circuit diagram attached)
• Inverted E-E display, no picture, no sound. (picture attached)
• No picture or teletext, RGB/status line at 2V. (picture attached)
• Switches to standby (after a few minutes). (part of circuit diagram displayed) (6689 tips)
• Defective after lightning. (part of circuit diagram displayed) (SBR - 6689 information)
• No functions. at start-up. Whistling. at switch-off.
• Repeated power supply failure. (part of circuit diagram displayed)
• Top of picture has non linear scan, ok when appliance has warmed up. (part of circuit diagram displayed) (6689 SBR repair tip)
• 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)
• Occasionally noise in TV (like short attempts to start up), picture width variation and display which disappears. (extract of circuit diagram attached)
• Start up from standby after 2 secs. (extract of circuit diagram attached)
• Picture is distorted on top. Flyback lines. Picture changes according to picture content. (with circuit diagram extract)
• Test picture visible in the background in TXT mode. (+ extract of circuit diagram)
• No colour. (extract of circuit diagram attached)
• 2R2 resistor always blows. (part of circuit diagram displayed)
• Picture overbright on left hand side with vertical lines.
• Bottom linearity faulty. (extract of circuit diagram attached)
• Excessive horizontal size. at top. (extract of circuit diagram attached)
• Vertical lock 1/3 of the way up the screen. (picture attached)
• The appliance often becomes intermittent when switched on. (picture attached)
• K9/K11 band switch.
• No RC functions. (part of circuit diagram displayed)
• Processor for TRD4 control panel.
• 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. (picture attached)
• Hum in picture. Error disappears after approx10 mins operation.
• E/W convex.
• When switching channels, TV stops for 1 sec.
• The station memory loses the station programming after about 3 weeks.
• Misty picture. (part of circuit diagram displayed)
• Brightness and colour saturation influence each other. (picture attached)
• Picture has shifted inwards in lower picture section. (part of circuit diagram displayed)
• E/W failure,temperature sensitive. (picture attached)
• Teletext only shows a green notice "P100" running on the screen, or Teletext is displayed but out of sync.
• Problems with the vertical deflection, picture folds at the top edge. (picture attached)
• Power supply whistling and the BU508 is S/C. (+ extract of circuit diagram)
• No line drive. (with circuit diagram extract)
• No vertical synchronisation. (with circuit diagram extract)
• Rope effect on the right hand side of the picture. (part of circuit diagram displayed)
• Insufficient horizontal and vertical picture aamplitude. Smoke from R3177. (extract of circuit diagram attached)
• Channel indicators permanently display 88. Hissing from EHT capacitor. (picture attached)
• Noise line on one side of screen. (picture attached)
• Temporary crackling from both speakers, then picture fails for a short time. Unfortunately fault no longer occurs at the moment. (extract of circuit diagram attached)
• High-voltage flash-over. (extract of circuit diagram attached)
• Picture intermittently goes to negative or is shifted laterally. (SBR - 6689 information)
• Tripping. (picture attached)
• No audio. Picture OK . (picture attached)
• No picture just loud trumpeting noise. (+ extract of circuit diagram)
• Only half of picture visible. (+ extract of circuit diagram)
• Poor IF gain. (part of circuit diagram displayed)
• Line tearing. at top. (+ extract of circuit diagram)
• Starts with E1 and intense fizzling sound. No picture or sound. (part of circuit diagram displayed)
• Line pulling/frame jitter. (picture attached)
• No channel storing.
• Rolling picture and warps vertically. (part of circuit diagram displayed) (6689 tips)
• Switches to standby. Motorboating. Switches on and off. (Non-SOPS, IV-B-3) (with circuit diagram extract) (service info for SBR -6689)
• Vertical sync remains occasionally halfway down the frame although it locks correctly. (extract of circuit diagram attached)
• E/W fault. Trips. (extract of circuit diagram attached)
• Critical adjustment with user controls. Sometimes it works properly when tapping on cabinet.
• Slow start-up. (extract of circuit diagram attached)
• 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.
• TXT-lines in picture for three seconds at switch over. Then perfect picture. (picture attached)
• The focusing pot. blows. (+ extract of circuit diagram)
• No MONO audio. STEREO OK .
• PSU whistles. Line output transistor BU508 fails (S/C).
• TDA3650 fails after one week. (with circuit diagram extract)
• Poor E/W adjustment with changes in contrast.
• Line oscillator chip failure after an EHT flashover. (extract of circuit diagram attached)
• Power supply trips at switch on, producing a fading whistle. (+ extract of circuit diagram)
• No function or display when first switched on. Starts up OK at second attempt. (picture attached)
• No E/W correction. at bottom. (extract of circuit diagram attached)
• No picture on teletext. (picture attached)
• Lines in picture. at top . (with circuit diagram extract)
• Switches to protection mode (intermittently). (with circuit diagram extract)
• East/West fault.
• Flyback lines. at top. (part of circuit diagram displayed)
• One colour missing (intermittently). (picture attached)
• Distorted picture at high white proportion. (+ extract of circuit diagram)
• The vertical lines are ribbed, especially in the test picture. (extract of circuit diagram attached)
• Picture is erased at 8-10 sec intervals. (extract of circuit diagram attached)
• Black stripes over the whole screen.
• Set intermittent dead, when faulty E1 displayed. (extract of circuit diagram attached)
• No colour. Audio and picture OK . (picture attached)
• TV switches to standby after approx 30 mins. E3 in display. (picture attached)
• Visible flyback lines and colour tints problems. (picture attached)
• Excessive brightness. (picture attached)
• Picture is off tune in PB.
• Unstable picture. (+ extract of circuit diagram)
• Total loss of memory immediately after CTV is switched off (brightness, colour, contrast, sound and channels). (extract of circuit diagram attached)
• No REC and PB. PSU hiccups. (with circuit diagram extract)
• Vertical collapse. (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)
• No audio. (part of circuit diagram displayed)
• The line oscillator is unstable, the picture shakes. (picture attached)
• Memory loss.
• Red picture. (picture attached)
• East-west raster correction fault. (with circuit diagram extract)
• Horizontal jitter. (+ extract of circuit diagram)
• Coloured spots in flat square picture tubes.
• No start-up. (extract of circuit diagram attached)
• Flyback lines. when changing channels. (part of circuit diagram displayed)
• No startup. Banging noise audible.
• Pincushion distortion. (+ extract of circuit diagram)
• In the middle of the picture a stripe which is approx 15cm high appears over the entire picture width.
• No function, no sound, no display and no HT. Only a faint switch-on thud in speakers.
• Horizontal output transistor defective. (picture attached)
• Raster IC defective after some time. (extract of circuit diagram attached)
• Distorted picture. Snow in picture. (extract of circuit diagram attached)
• Muted audio. Picture OK .
• The appliance may cut out occasionally and then there is no more picture or sound.
• Dark screen. R3186 blows up. What is the value of R3186? (part of circuit diagram displayed) (6689 SBR repair tip)
• PSU and HV unit switch on, but no display and standby LED lights. No linearity.
• Repeat failure of TDA3650 & 26V supply. (with circuit diagram extract)
• How to store personal preferences (PP). (SBR - 6689 information)
• Vertical fault. Picture is approx 20cm high. Bright background with flyback lines.
• Faint white streaks above the picture. (extract of circuit diagram attached)
• No picture. Display OK .
• Wide white bar in the picture, no reception. (picture attached)
• Normal values for brightness, volume and colour saturation cannot be stored.
• Squealing from PSU. (extract of circuit diagram attached)
• E/W fault. (extract of circuit diagram attached)
• Adjustment.
• No synchronisation. intermittently. Picture shakes. (part of circuit diagram displayed)
• No picture. (+ extract of circuit diagram) (6689 tip from SBR)
• Frequency divider 4822 212 21226. (6689 tips)
• BU826 and main fuse are defective. When starting after replacement, the power supply hiccups once and is defective again. (part of circuit diagram displayed)
• East/west code. The sound disappears, the picture is vague and the appliance constantly arches stations.
• Intermittent or no vertical linearity. (part of circuit diagram displayed)
• No picture. Audio OK . (part of circuit diagram displayed)
• No start up. PSU goes to protection circuit. (+ extract of circuit diagram)
• Horizontal power stage squeaks.
• Picture synchronization in the top third of the screen. (with circuit diagram extract)
• No drive at BU826. (picture attached)
• Red picture (intermittently). (picture attached)
• Shakey picture. No sound on some channels. Appliance starts. (with circuit diagram extract)
• No picture, only sound present. When appliance is switched off a white line appears.
• Brightness and or contrast don't work or don't work properly.
• All memory-cells on 56. (6689 SBR repair tip)
• No sound or vision and E3 on the display. (+ extract of circuit diagram)
• Picture too large, E/W indented.
• Switches to program 1, but no function. Whistles.
• Switches to standby after a few hours. Can be switched on again but fault reoccurs. Interim period becomes shorter.
• Volume too high. Excessive colour and incorrect brightness at switch on.
• Picture shakes. at top (intermittently). (+ extract of circuit diagram)
• Switches off and on spontaneously, particularly when putting on a video film and when switching over. (6689 tip from SBR)
• Occasionally picture darkens and at the same time raster disappears. (extract of circuit diagram attached)
• Picture horizontally unstable. (part of circuit diagram displayed)
• There is an occasional beating noise.
• BU508 fails continuously. (+ extract of circuit diagram)
• Lines at the top of the picture depending on the picture content. (with circuit diagram extract) (6689 tips)
• Loses frame correction slowly. (with circuit diagram extract)
• Line transformer installation.
• After about 7 days the vertical endstage IC TDA3650 blows again. All the voltages are ok. (with circuit diagram extract)
• Normal off air picture is fine but teletext is very dim with hardly any contrast. (part of circuit diagram displayed)
• Picture unstable on certain stations when cold. Also TXT horizontally unstable.
• Very loud sound, cannot be adjusted. No display. (with circuit diagram extract)
• Low audio. (with circuit diagram extract)
• Sometimes no vertical deflection; random cramping at top of picture. (+ extract of circuit diagram)
• No LCD on front panel. (picture attached) (SBR - 6689 information)
• Poor focus. (+ extract of circuit diagram)
• Pincushion effect on vertical straight lines. (picture attached)
• Only half of picture and there is a lot of light. (extract of circuit diagram attached)
• TV starts up but EHT is missing. Programme number disappears, then "E1" appears.
• Tuning drifts. Snowy raster. (picture attached)
• Line output stage transistor BU508 fails approx every 6 days. (+ extract of circuit diagram)
• Error codes. (with circuit diagram extract)
• No function, 142V is present but R3292 (680R) blows continuously.
• Flyback lines. at top (in TXT). (+ extract of circuit diagram)
• Blank raster. Audio OK . (with circuit diagram extract)
• No start-up (when cold). (+ extract of circuit diagram)
• No picture. intermittently. HV OK. . (+ extract of circuit diagram)
• E/W adjustment.
• Picture runs from left to right, especially on bright pictures.
• Cycles on/off. after a few minutes. (6689 tip from SBR)
• Switches to standby. (with circuit diagram extract)
• Interference on channel 2 with TRD 4 system. (+ extract of circuit diagram)
• Fine horizontal lines on picture, particularly during channel switch-over. Occasionally vertical sync. does not fit in with screen.
• Poor VCR line synchronisation . (part of circuit diagram displayed)
• Output signal is occasionally O/C when shown on oscilloscope.
• Does not stop at S channels during station search. Appliance should be suited to do so.
• Blows components (intermittently). (+ extract of circuit diagram)
• The sound contains noise, no low pitched sound. (part of circuit diagram displayed) (6689 tip from SBR)
• Vertical blanking interval still visible in picture after program switch over. (part of circuit diagram displayed)
• No picture. Sound available. Intermittently picture appears for 1 sec.
• Memory values for picture, sound and channels are lost. (part of circuit diagram displayed)
• The appliance cuts out and E3 in the display then everything becomes normal again and after 30 secs the appliance cuts out again. (extract of circuit diagram attached)
• Destroys line output transistors. (+ extract of circuit diagram)
• Bright white line in picture, no sound. (with circuit diagram extract)
• Hums and crackles. Sound comes from loudspeaker and chassis. Flashing LED.
• Fuse 1101 fails continuously. (with circuit diagram extract) (6689 tip from SBR)
• HT transistor blows continuously (short circuit).
• Picture vibrates horizontally. Broken or intermittently double bar. (+ extract of circuit diagram)
• Poor E/W. Centre of picture is pulled inwards. (picture attached)
• Hums and crackling. LED flashes. (part of circuit diagram displayed)
• Field flyback lines visible for a second or so when channel changed. They then disappeared. (extract of circuit diagram attached)
• Difficulties in tuning on channel. (picture attached)
• Signal/sync/timebase drive problems.
• No line drive to line output transistor (+ extract of circuit diagram)
• Teletext only shows "P100" flying all over the screen out of sync, or shows a teletext page out of sync.
• At switch on there is a loud trumpeting and no picture. (picture attached)
• Small picture. Picture height and audio volume vary according to picture content. (extract of circuit diagram attached)
• Poor picture. (with circuit diagram extract)
• Blanking fails, lines run through and sound is . (picture attached)
• Horizontal collapse. after warm-up. No E/W correction. intermittently.
• Intermittently parallel stripes on one part of the screen. Shock sensitive.
• Beam limiter problem. (extract of circuit diagram attached)
• Herringone pattern and upper channels are not accepted when tuning.
• No power supply regulation. (+ extract of circuit diagram)
• Intermittently loses vertical sync. Black line slowly moving up and down picture. Picture and sound OK. (extract of circuit diagram attached)
• Reduced vertical size. (with circuit diagram extract) (service info for SBR -6689)
• Voltages measured on pins IC TDA3650.
• Incorrect TXT, ie. instead of a 6, an 8 will appear, or the appliance goes back to regular picture position. (picture attached) (6689 tip from SBR)
• Picture OK but display only shows signs.
• Tuning voltage blocked on 33V or 0V (TRD sets).
• No function, stand-by connection has voltage.
• Intermittent no signals, then will rest to CH1 with volume high.
• 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. (6689 tips)
• After switch on program display P1, then E1. No functions. (with circuit diagram extract)
• Squealing noise. (part of circuit diagram displayed)
• Top of picture is non linear with teletext lines. (picture attached) (service info for SBR -6689)
• Visible black, unsynchronised TXT klok.
• Power supply cuts out suddenly and whistles. Ok if line BU removed. (extract of circuit diagram attached) (service info for SBR -6689)
• Poor vertical synchronisation. (+ extract of circuit diagram)
• No horizontal synchronisation. (part of circuit diagram displayed)
• No start-up. intermittently. Squealing noise. (with circuit diagram extract)
• Failure of field output chip TDA3650. (picture attached)
• Intermittent loss of colour and picture sways. (with circuit diagram extract)
• Intermittently picture blanks for approx 1 sec. (extract of circuit diagram attached)
• Dead (intermittently). Squealing from PSU. (with circuit diagram extract)
• The colour shimmers or fades. (extract of circuit diagram attached)
• After switch-on no picture and sound, 88 in display. When mains switch pressed, snow. TXT and stereo LED lights.
• Linearity fault in upper part of screen.
• No tuning. (+ extract of circuit diagram)
• Upper vertical linearity defective. Flyback lines on TXT broadcasts. (with circuit diagram extract)
• Blank screen (intermittently). (part of circuit diagram displayed)
• The picture is too small. The power supply is too weak. (picture attached) (service info for SBR -6689)
• Switches to protection mode (after a few minutes). (extract of circuit diagram attached)
• No display. No channel search. Picture OK . (part of circuit diagram displayed)
• Dead. No line drive. (with circuit diagram extract)
• The appliance gurgles occasionally. (part of circuit diagram displayed)
• Horizontal deflection is poor. (with circuit diagram extract)
• Line deflection BU508V blows.
• Vertical IC defective after mounting. (extract of circuit diagram attached)
• No start up, displays E3. No 13V. (with circuit diagram extract)
• Picture lacks width after 5mins from start-up. Displays E3. (+ extract of circuit diagram)
• UPD8049PC SAA063 has been changed. The display shows 80. (service info for SBR -6689)
• Only noise the display does not light up.
• Power supply BU blows. (+ extract of circuit diagram)
• Trapezium ininformation. (+ extract of circuit diagram)
• Blanking valency in picture (black bar in 3/4 of picture). (with circuit diagram extract) (6689 tips)
• PSU hiccups.
• No sound or picture. Screen in the black level.
• Bright picture. Flyback lines.
• Intermittently dead. (extract of circuit diagram attached)
• Voltage slightly high. (+ extract of circuit diagram)
• No colour when the appliance is switched on (cannot be programmed through memory), picture is dark.
• Whistling. No error display.
• Poor RC sensitivity. (extract of circuit diagram attached)
• Non linear picture. (part of circuit diagram displayed)
• On/off LED flickering. All front panel symbols light up but no control. (part of circuit diagram displayed) (6689 tip from SBR)
• Every 2-3 days TR7162 (BU508V) is destroyed.
• Blank raster. (+ extract of circuit diagram)
• No red. (part of circuit diagram displayed)
• No TXT the indication light lights up. (extract of circuit diagram attached)
• Predominance of blue, faint blue flyback lines visible. (+ extract of circuit diagram)
• No picture. Loud fizzling noise from line deflection. (with circuit diagram extract) (6689 tips)
• Blurred screen. Shifted tuning. Unable to adjust with fine tuning. Sometimes tuning doesn't lock in on stations.
• The display reacts but the tuning does not.
• PSU switches frequently to protection mode (also when lamp is connected). (part of circuit diagram displayed)
• 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.
• All LCD segments are lit. LED flashes abnormally. (picture attached)
• There is an occasional banging noise, the picture shakes. (+ extract of circuit diagram)
• After installing the vertical ICs there are stripes in the top part of the picture. Electrolytic 3300uF is ok. (part of circuit diagram displayed)
• 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. (picture attached)
• Only starts up after pressing ON/OFF switch a few times. (extract of circuit diagram attached)
• TXT lines at top of picture. (+ extract of circuit diagram)
• No E/W correction. (extract of circuit diagram attached)
• Rolling picture for 5 secs after switching from VHF to UHF. Poor raster synchronisation.
• Lightning flash; K40 and KT4 are very sensitive to induction voltage. (with circuit diagram extract)
• Mains switch and speech-music switch.
• Sparks on the yoke plug. High voltage is 1500Vpp instead of 1200Vpp. Working voltage 130V is ok. (part of circuit diagram displayed)
• The power supply goes to protection circuit. (with circuit diagram extract)
• No picture. intermittently. (picture attached)
• Occasionally thin white lines, picture bounce at the side and top edge.
• Code numbers for picture tube prints.
• Flashover then weak contrast. (+ extract of circuit diagram)
• Focus control replacement. (part of circuit diagram displayed)
• Non-linearity on vertical sync. (+ extract of circuit diagram)
• Deflection BU fails after approx. 1-2 weeks.
• No picture or sound after spark flashover in the HS cable. (+ extract of circuit diagram)
• Cycles on/off.
• Dim picture. in TXT. No contrast. in TXT. (+ extract of circuit diagram)
• 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. (picture attached)
• Repeated failure of BU508A line output transistor. (part of circuit diagram displayed)
• No picture. after a few seconds. (part of circuit diagram displayed)
• Muted audio. after a while. (+ extract of circuit diagram)
• Set does not go to standby although the LED is lit up. (with circuit diagram extract)
• Instable picture. Picture height and picture width change depending on the volume. Picture folds over at the top.
• Horizontal lines (TXT data) on the top part of the picture. (with circuit diagram extract)
• No functions. (with circuit diagram extract)
• Green lines. (part of circuit diagram displayed)
• Predominance of one of the three colours (red, green or blue).
• On cable reception, stations cannot be tuned or the stations wander off. (6689 SBR repair tip)
• Switches on, but no EHT available. Channel number disappears and then "E1" is displayed.
• EHT arcing.
• Line tearing in upper third of picture after longer operation. (+ extract of circuit diagram) (service info for SBR -6689)
• Dark picture. at bottom (after a while). (part of circuit diagram displayed)
• Herringbone pattern on raster. High channels are not accepted when tuned. (6689 tip from SBR)
• All presettings disappear after turning on the appliance.
• Frame foldover & text interference at top of screen. (extract of circuit diagram attached)
• Dark picture. Audio OK . (part of circuit diagram displayed)
• Channel loss at switch on after memorising channels. (+ extract of circuit diagram)
• Channels "up and down" only work on the RC.
• PSU is defective. (+ extract of circuit diagram)
• No audio. OK via SCART . (+ extract of circuit diagram)
• No synchronisation.
• Too little brightness after DIM command (CDI use). (+ extract of circuit diagram)
• Switches to standby (after start-up).
• The picture is much too wide, east/west does not control. (part of circuit diagram displayed)
• Doesn't switch to standby. Standby LED OK, no display, but picture and sound remains.
• Intermittent loss of sound and vision, with just snow and no channel display. (part of circuit diagram displayed)
• Raster shifted upward. Picture OK.
• Blank raster, turning up A1 control shows frame collapse. (+ extract of circuit diagram)
• Blanking of the raster, starting at bottom of the picture. (extract of circuit diagram attached)
• No brightness. No colour. intermittently.
• Conversion from TRD to TRD-ECO. (6689 tip from SBR)
• Erratic functions. (part of circuit diagram displayed)
• Distorted picture. (picture attached)
• Power supply BU S/C. (+ extract of circuit diagram)
• No remote control operation on teletext version. (extract of circuit diagram attached)
• Arcing. (picture attached)
• Picture takes 10 mins to appear. (extract of circuit diagram attached)
• Unknown indication in the display, no function.
• Muted audio. intermittently. (6689 tips)
• Line output transistor fails repeatedly.
• The power supply unit shuts off after some time and squeaks. (with circuit diagram extract)
• Picture output IC defective after 2-3 weeks. (+ extract of circuit diagram)
• Very loud sound, not adjustable. No display.
• Low audio. Distorted audio. (part of circuit diagram displayed)
• Lines in picture. on the left. (part of circuit diagram displayed)
• Switches to protection mode (after a while). (picture attached)
• No adjustment of sound. (extract of circuit diagram attached)
• Line BU goes S/C every fortnight. (with circuit diagram extract)
• TV picture slightly visible when in TXT mode. (picture attached)
• Picture-sound-display is intermittent. (+ extract of circuit diagram)
• No function, the 141V power supply voltage is only approx 80V. (+ extract of circuit diagram)
• Switches off by itself.
• The sound goes erratically to max. volume. (+ extract of circuit diagram)
• Picture bounces in upper picture third if a poor signal is present at aerial input. Vertical lines twist. (+ extract of circuit diagram)
• Reduced horizontal size. (+ extract of circuit diagram)