6679 / SBR [TV]

• Processor for TRD4 control panel. (6679 tips)
• Intermittent loss of colour and picture sways. (picture attached)
• The appliance often becomes intermittent when switched on. (with circuit diagram extract)
• Horizontal deflection is poor. (part of circuit diagram displayed)
• All LCD segments are lit. LED flashes abnormally. (+ extract of circuit diagram)
• Switches to standby (after start-up).
• Error codes. (picture attached)
• Test picture visible in the background in TXT mode. (part of circuit diagram displayed)
• No remote control operation on teletext version. (picture attached)
• Line tearing in upper third of picture after longer operation. (with circuit diagram extract)
• After switch on program display P1, then E1. No functions. (picture attached)
• The vertical lines are ribbed, especially in the test picture. (extract of circuit diagram attached)
• No raster. (picture attached)
• Appliance functions only when warm. It fails intermittently when cold.
• One colour missing (intermittently). (extract of circuit diagram attached)
• Sparks on the yoke plug. High voltage is 1500Vpp instead of 1200Vpp. Working voltage 130V is ok. (picture attached)
• Picture unstable on certain stations when cold. Also TXT horizontally unstable.
• Conversion from TRD to TRD-ECO.
• Hums and crackles. Sound comes from loudspeaker and chassis. Flashing LED.
• Dark picture. Audio OK . (part of circuit diagram displayed)
• Mains switch and speech-music switch.
• Brightness and or contrast don't work or don't work properly.
• Tripping. (extract of circuit diagram attached) (6679 tips)
• After about 7 days the vertical endstage IC TDA3650 blows again. All the voltages are ok. (part of circuit diagram displayed)
• TXT-replacement.(4822 212 21008T). (extract of circuit diagram attached)
• Vertical IC defective after mounting. (picture attached)
• No colour. (with circuit diagram extract)
• Poor picture. (with circuit diagram extract)
• No E/W correction. (part of circuit diagram displayed)
• Intermittent loss of sound and vision, with just snow and no channel display. (extract of circuit diagram attached)
• Horizontal collapse. after warm-up. No E/W correction. intermittently.
• Channel indicators permanently display 88. Hissing from EHT capacitor. (part of circuit diagram displayed)
• Insufficient horizontal and vertical picture aamplitude. Smoke from R3177. (extract of circuit diagram attached)
• Switches to program 1, but no function. Whistles.
• Volume too high. Excessive colour and incorrect brightness at switch on.
• Screen compressed at the bottom and very quick vertical drift of picture. (with circuit diagram extract)
• 2R2 resistor always blows. (part of circuit diagram displayed) (6679 tip from SBR)
• Signal/sync/timebase drive problems.
• Switches to protection mode (intermittently). (with circuit diagram extract)
• Arcing. (part of circuit diagram displayed)
• Flyback lines. in PB. (picture attached)
• Picture bounces in upper picture third if a poor signal is present at aerial input. Vertical lines twist. (part of circuit diagram displayed)
• No picture at start up. Channel storage ok. Sound, colour, contrast and brightness balance are not stored.
• All presettings disappear after turning on the appliance.
• Intermittent no signals, then will rest to CH1 with volume high.
• Only noise the display does not light up.
• No REC and PB. PSU hiccups. (part of circuit diagram displayed)
• Approx 5cm distortion on top of picture with any station, in cold conditions. (with circuit diagram extract)
• How to store personal preferences (PP).
• Picture is off tune in PB. (6679 SBR repair tip)
• Repeat failure of TDA3650 & 26V supply. (with circuit diagram extract) (6679 SBR repair tip)
• Picture rolls. (picture attached)
• Intermittent or no vertical linearity. (with circuit diagram extract)
• Dark picture, also by TXT/Scart. Colour OK. (with circuit diagram extract)
• Picture synchronization in the top third of the screen. (picture attached)
• Sometimes when switched on set gives a squealing noise and no sound or vision. (with circuit diagram extract)
• The TXT info appears at top of picture when cold. OK after 5 mins. (part of circuit diagram displayed) (6679 tip from SBR)
• Doesn't switch to standby. Standby LED OK, no display, but picture and sound remains.
• All memory-cells on 56.
• "88" on the display. No picture. No sound. (picture attached) (6679 tips)
• Slow start-up. (part of circuit diagram displayed)
• When switching channels, TV stops for 1 sec.
• No audio. OK via SCART . (part of circuit diagram displayed)
• East/West fault.
• No audio. Picture OK . (extract of circuit diagram attached)
• The power supply unit shuts off after some time and squeaks. (extract of circuit diagram attached)
• No LCD on front panel. (extract of circuit diagram attached)
• Memory values for picture, sound and channels are lost. (+ extract of circuit diagram)
• BU504 blows after 30 mins. (extract of circuit diagram attached)
• Black streaky lines after a few mins. Completely dark picture after approx 5 mins. (+ extract of circuit diagram)
• The line oscillator is unstable, the picture shakes. (extract of circuit diagram attached)
• No display. No channel search. Picture OK . (with circuit diagram extract) (6679 tips)
• No picture or teletext, RGB/status line at 2V. (picture attached)
• Line pulling/frame jitter. (+ extract of circuit diagram)
• TXT-lines in picture for three seconds at switch over. Then perfect picture. (extract of circuit diagram attached) (6679 tip from SBR)
• Shakey picture. No sound on some channels. Appliance starts. (part of circuit diagram displayed)
• When calling up TXT page, 2nd digit is incorrectly reproduced, yet correct page appears.
• 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)
• No horizontal synchronisation. (part of circuit diagram displayed)
• Noise in picture. (extract of circuit diagram attached)
• 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. (part of circuit diagram displayed)
• TDA3650 fails after one week. (extract of circuit diagram attached)
• Rolling picture and warps vertically. (part of circuit diagram displayed)
• No picture. When switched on, display shows 5 (no bottom segment) and EXT4. E3 after a few secs. (+ extract of circuit diagram)
• Blanking of the raster, starting at bottom of the picture. (part of circuit diagram displayed)
• Picture shifts and jitters depending on picture content.
• The appliance cuts out and E3 in the display then everything becomes normal again and after 30 secs the appliance cuts out again. (picture attached)
• No functions. (with circuit diagram extract)
• Distorted picture. Snow in picture. (part of circuit diagram displayed)
• Black stripes over the whole screen.
• The focusing pot. blows. (extract of circuit diagram attached)
• Muted audio. intermittently. (6679 tips)
• Occasionally poor frame sync (line).
• Lightning flash; K40 and KT4 are very sensitive to induction voltage. (+ extract of circuit diagram)
• Field flyback lines visible for a second or so when channel changed. They then disappeared. (+ extract of circuit diagram) (SBR - 6679 information)
• Flyback lines. when changing channels. (+ extract of circuit diagram)
• Reduced horizontal size. (part of circuit diagram displayed)
• Poor VCR line synchronisation . (part of circuit diagram displayed)
• Incorrect TXT, ie. instead of a 6, an 8 will appear, or the appliance goes back to regular picture position. (extract of circuit diagram attached)
• PSU is defective. (picture attached) (6679 SBR repair tip)
• No TXT (intermittently). (+ extract of circuit diagram)
• There is an occasional beating noise.
• Blurred screen. Shifted tuning. Unable to adjust with fine tuning. Sometimes tuning doesn't lock in on stations.
• Loses frame correction slowly. (picture attached)
• No horizontal deflection. (picture attached)
• Too much brilliance of one cathode of picture tube.
• Dark screen. R3186 blows up. What is the value of R3186? (picture attached)
• The picture appears then disappears. T26 after D6106, varies from 25 to 10Vcc. (extract of circuit diagram attached)
• Does not stop at S channels during station search. Appliance should be suited to do so.
• Trapezium ininformation. (extract of circuit diagram attached)
• Stuck in standby. (part of circuit diagram displayed) (6679 tip from SBR)
• Predominance of one of the three colours (red, green or blue).
• Whistling from PSU. (part of circuit diagram displayed)
• Herringone pattern and upper channels are not accepted when tuning. (6679 SBR repair tip)
• No start up. PSU goes to protection circuit. (extract of circuit diagram attached)
• Poor vertical synchronisation. (picture attached) (service info for SBR -6679)
• Picture horizontally unstable. (with circuit diagram extract)
• Memory loss.
• Power supply trips at switch on, producing a fading whistle. (with circuit diagram extract) (6679 tip from SBR)
• No start-up. Audible noise.
• Unknown indication in the display, no function.
• No image or sound after start up. Does not lock channels. After 1-2 minutes it comes back to normal. (with circuit diagram extract)
• Changing channel. (+ extract of circuit diagram)
• Switches to standby (after a few minutes). (with circuit diagram extract)
• Muted audio. (with circuit diagram extract)
• Lines in picture. on the left. (part of circuit diagram displayed)
• No power supply regulation. (picture attached)
• Picture output IC defective after 2-3 weeks. (+ extract of circuit diagram) (6679 tip from SBR)
• Coloured lines and sloping picture. (part of circuit diagram displayed)
• Visible flyback lines and colour tints problems. (with circuit diagram extract)
• Vertical line. (with circuit diagram extract)
• Intermittently loses vertical sync. Black line slowly moving up and down picture. Picture and sound OK. (picture attached)
• The appliance gurgles occasionally. (with circuit diagram extract)
• No picture. after a few seconds. (with circuit diagram extract)
• High-voltage flash-over. (+ extract of circuit diagram)
• Line output transistor fails repeatedly.
• Black screen. Audio OK . (with circuit diagram extract)
• Raster IC defective after some time. (picture attached) (6679 SBR repair tip)
• No picture or sound after spark flashover in the HS cable. (with circuit diagram extract)
• Set does not go to standby although the LED is lit up. (+ extract of circuit diagram)
• Doesn't lock in on channels or stops but tuned off. (part of circuit diagram displayed) (service info for SBR -6679)
• Spontaneous flash over in focus spark gap.
• Destroys line output transistors. (extract of circuit diagram attached)
• 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)
• The picture is too small. The power supply is too weak. (part of circuit diagram displayed) (6679 tip from SBR)
• Flyback lines. at top (in TXT). (with circuit diagram extract)
• Normal values for brightness, volume and colour saturation cannot be stored.
• Blanking valency in picture (black bar in 3/4 of picture). (+ extract of circuit diagram)
• Raster shifted upward. Picture OK.
• Picture darkens (after disappearance of green bar) after tuning and storing channel in memory. No adjustment possible.
• Hum in picture. Contrast dependent effect. (+ extract of circuit diagram)
• TV picture slightly visible when in TXT mode. (extract of circuit diagram attached)
• Repeated failure of BU508A line output transistor. (picture attached)
• PSU and line transformer chirp. (with circuit diagram extract)
• Video and bottom half of scan are missing with extremely bright raster. (+ extract of circuit diagram)
• No raster. Audio OK . (part of circuit diagram displayed)
• Vertical lock 1/3 of the way up the screen. (picture attached)
• Code numbers for picture tube prints.
• Dead. No line drive. (+ extract of circuit diagram)
• Picture shakes. at top (intermittently). (+ extract of circuit diagram) (6679 tip from SBR)
• Starts with E1 and intense fizzling sound. No picture or sound. (part of circuit diagram displayed)
• Snowy raster. (part of circuit diagram displayed)
• Flyback lines in TXT broadcasts. Upper vertical linearity is defective. (with circuit diagram extract)
• No function, 142V is present but R3292 (680R) blows continuously.
• Whistling. No error display.
• Squealing from PSU. (part of circuit diagram displayed)
• Red picture. (part of circuit diagram displayed) (SBR - 6679 information)
• Red picture (intermittently). (part of circuit diagram displayed)
• No picture. intermittently. HV OK. . (with circuit diagram extract)
• Vertical waves when switching from TXT to normal picture.
• Frame foldover & text interference at top of screen. (with circuit diagram extract)
• E/W fault. (extract of circuit diagram attached)
• The power supply goes to protection circuit. (+ extract of circuit diagram)
• Picture vibrates horizontally. Broken or intermittently double bar. (with circuit diagram extract) (6679 SBR repair tip)
• At switch on there is a loud trumpeting and no picture. (with circuit diagram extract)
• Line BU goes S/C every fortnight. (with circuit diagram extract)
• Very faint raster. (picture attached)
• Muted audio. after a while. (+ extract of circuit diagram)
• Unstable picture. (part of circuit diagram displayed)
• No TXT. (picture attached)
• Upper vertical linearity defective. Flyback lines on TXT broadcasts. (+ extract of circuit diagram)
• No functions. at start-up. Whistling. at switch-off.
• On cable reception, stations cannot be tuned or the stations wander off.
• Switches to standby. Motorboating. Switches on and off. (Non-SOPS, IV-B-3) (+ extract of circuit diagram)
• Occasionally thin white lines, picture bounce at the side and top edge.
• 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)
• No MONO audio. STEREO OK .
• Sometimes no vertical deflection; random cramping at top of picture. (extract of circuit diagram attached)
• Fine horizontal lines on picture, particularly during channel switch-over. Occasionally vertical sync. does not fit in with screen.
• Dark picture. at bottom (after a while). (picture attached)
• PSU and HV unit switch on, but no display and standby LED lights. No linearity.
• No colour. Audio and picture OK . (+ extract of circuit diagram) (6679 SBR repair tip)
• Pictures bows at edges. Width can be adjusted. (extract of circuit diagram attached)
• Lines in picture. at top . (with circuit diagram extract)
• No function or display when first switched on. Starts up OK at second attempt. (picture attached)
• Horizontal output transistor defective. (picture attached)
• Distorted picture. (+ extract of circuit diagram)
• Muted audio. Picture OK .
• Voltages measured on pins IC TDA3650.
• Every 2-3 days TR7162 (BU508V) is destroyed.
• Poor closure of function door.
• Flyback lines. at top. (with circuit diagram extract)
• Adjustment.
• Occasionally noise in TV (like short attempts to start up), picture width variation and display which disappears. (picture attached)
• Transistors TR7131, TR7122 and TR7123 blown. (extract of circuit diagram attached) (service info for SBR -6679)
• The TXT quivers when a V6100 tuner is connected. (with circuit diagram extract)
• Hum in picture. Error disappears after approx10 mins operation.
• No colour when the appliance is switched on (cannot be programmed through memory), picture is dark.
• 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) (6679 tip from SBR)
• Hums and crackling. LED flashes. (with circuit diagram extract)
• Defective after lightning. (picture attached)
• Sound becomes lower after switch on. (part of circuit diagram displayed)
• Power supply cuts out suddenly and whistles. Ok if line BU removed. (part of circuit diagram displayed) (SBR - 6679 information)
• No function, the 141V power supply voltage is only approx 80V. (part of circuit diagram displayed) (6679 tip from SBR)
• E/W fault. Trips. (with circuit diagram extract)
• Display shows functions which were not chosen. (extract of circuit diagram attached)
• Picture intermittently goes to negative or is shifted laterally.
• Rope effect on the right hand side of the picture. (with circuit diagram extract)
• Set intermittent dead, when faulty E1 displayed. (with circuit diagram extract)
• Tuning drifts. Snowy raster. (with circuit diagram extract)
• Vertical problems. (part of circuit diagram displayed)
• The appliance may cut out occasionally and then there is no more picture or sound. (SBR - 6679 information)
• 300V from power supply.
• No start up, displays E3. No 13V. (extract of circuit diagram attached)
• Picture shifts downwards and then comes up again after a few minutes, picture is then o.k., but is round. (part of circuit diagram displayed) (service info for SBR -6679)
• Green lines. (extract of circuit diagram attached)
• Normal off air picture is fine but teletext is very dim with hardly any contrast. (with circuit diagram extract)
• No picture, only sound present. When appliance is switched off a white line appears. (6679 SBR repair tip)
• Non linear picture. (part of circuit diagram displayed)
• After switch-on no picture and sound, 88 in display. When mains switch pressed, snow. TXT and stereo LED lights. (6679 SBR repair tip)
• The station memory loses the station programming after about 3 weeks.
• Very loud sound, not adjustable. No display.
• Vertical foldover at bottom. (extract of circuit diagram attached)
• Vertical collapse. (with circuit diagram extract)
• Channel loss at switch on after memorising channels. (extract of circuit diagram attached)
• Switches off and on spontaneously, particularly when putting on a video film and when switching over.
• Vertical foldover at top. (with circuit diagram extract)
• Occasionally picture darkens and at the same time raster disappears. (extract of circuit diagram attached)
• Channel drifts briefly into UHF between approx channel 30 and 37.
• Reduced vertical size. (part of circuit diagram displayed)
• After installing the vertical ICs there are stripes in the top part of the picture. Electrolytic 3300uF is ok. (extract of circuit diagram attached)
• Line oscillator chip failure after an EHT flashover. (+ extract of circuit diagram) (SBR - 6679 information)
• Burn up in E/W correction circuit (R3170, R3175). (picture attached)
• Hum in power supply audible. (extract of circuit diagram attached)
• No picture. Sound available. Intermittently picture appears for 1 sec.
• Switches to protection mode (after a while). (part of circuit diagram displayed) (service info for SBR -6679)
• No picture. Audio OK . (with circuit diagram extract)
• There is an occasional banging noise, the picture shakes. (part of circuit diagram displayed) (SBR - 6679 information)
• No line drive to line output transistor (part of circuit diagram displayed)
• No brightness. No colour. intermittently. (6679 tip from SBR)
• Wide white bar in the picture, no reception. (extract of circuit diagram attached)
• Blanking fails, lines run through and sound is . (with circuit diagram extract)
• BU826 and main fuse are defective. When starting after replacement, the power supply hiccups once and is defective again. (+ extract of circuit diagram)
• PSU hiccups.
• Instable picture. Picture height and picture width change depending on the volume. Picture folds over at the top.
• No sound or picture. Screen in the black level.
• No startup. Banging noise audible.
• Poor RC sensitivity. (picture attached)
• East/west correction is defective or the power supply gurgles. (with circuit diagram extract)
• Searches for channels continuously. (picture attached)
• No sound or vision and E3 on the display. (picture attached)
• Whines loudly at switch on and will not start up. (with circuit diagram extract)
• Deflection BU fails after approx. 1-2 weeks.
• Horizontal power stage squeaks.
• Picture overbright on left hand side with vertical lines.
• Goes into standby each time channel is changed manually or by the RCU.
• Total loss of memory immediately after CTV is switched off (brightness, colour, contrast, sound and channels). (picture attached)
• No function, no sound, no display and no HT. Only a faint switch-on thud in speakers. (6679 tips)
• Power supply BU blows. (part of circuit diagram displayed)
• Line transformer installation.
• Peak white bright band approx. 4" across screen. Then set dead. (part of circuit diagram displayed)
• Vertical fault. Picture is approx 20cm high. Bright background with flyback lines.
• In display all segments lit. (SBR - 6679 information)
• E/W convex.
• 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)
• Picture takes 10 mins to appear. (with circuit diagram extract)
• Predominance of blue, faint blue flyback lines visible. (extract of circuit diagram attached)
• Vertical waves on both sides of picture. Unstable picture. (part of circuit diagram displayed)
• No red. (extract of circuit diagram attached)
• Problems with the vertical deflection, picture folds at the top edge. (part of circuit diagram displayed)
• Vertical linearity defective. (picture attached)
• In the middle of the picture a stripe which is approx 15cm high appears over the entire picture width.
• No tuning. (+ extract of circuit diagram)
• Line output transistor (BU508) defective. (extract of circuit diagram attached)
• No start-up. (picture attached)
• Rolling picture for 5 secs after switching from VHF to UHF. Poor raster synchronisation.
• Bright white line in picture, no sound. (part of circuit diagram displayed)
• No channel storing.
• Top of picture is non linear with teletext lines. (part of circuit diagram displayed)
• Lines at the top of the picture depending on the picture content. (picture attached)
• No picture. (with circuit diagram extract)
• Only starts up after pressing ON/OFF switch a few times. (part of circuit diagram displayed)
• Rectification of IM 84VK049. (part of circuit diagram displayed)
• Picture is erased at 8-10 sec intervals. (extract of circuit diagram attached)
• No picture on teletext. (with circuit diagram extract)
• Blank raster. Audio OK . (with circuit diagram extract) (6679 tips)
• Occasionally picture runs through (line).
• Excessive horizontal size. at top. (part of circuit diagram displayed) (6679 tips)
• Picture lacks width after 5mins from start-up. Displays E3. (extract of circuit diagram attached) (6679 SBR repair tip)
• Picture is distorted on top. Flyback lines. Picture changes according to picture content. (picture attached) (service info for SBR -6679)
• Misty picture. (picture attached)
• Poor IF gain. (picture attached)
• E/W failure,temperature sensitive. (+ extract of circuit diagram)
• After operating for 12-14 days, the line-BU blows. (picture attached)
• Only half of picture and there is a lot of light. (+ extract of circuit diagram)
• No drive at BU826. (+ extract of circuit diagram)
• Replacing line output transistor BU508.
• HT transistor blows continuously (short circuit).
• Too little brightness after DIM command (CDI use). (+ extract of circuit diagram)
• Horizontal sychronisation is distorted. (extract of circuit diagram attached)
• Low audio. Distorted audio. (+ extract of circuit diagram)
• TXT lines at top of picture. (with circuit diagram extract)
• No line drive. (picture attached)
• Starts up gradually. (with circuit diagram extract)
• No start-up. intermittently. Squealing noise. (picture attached)
• No start up and humming.
• Switches to protection mode (after a few minutes). (picture attached)
• Frequency divider 4822 212 21226.
• Channels "up and down" only work on the RC. (SBR - 6679 information)
• TV switches to standby after approx 30 mins. E3 in display. (extract of circuit diagram attached)
• When switching on, main supply reduces to about 24V and then no function.
• Flashover then weak contrast. (extract of circuit diagram attached)
• The line end stage transistor 7162 heats up. The base and collector pulses are ok, the transistor blows. (part of circuit diagram displayed)
• Picture bends at top and vibrates. (extract of circuit diagram attached)
• BU508 fails continuously. (picture attached)
• White lines, no focus, too much brightness. 15cm in the middle of the picture. (with circuit diagram extract)
• PSU whistles. Line output transistor BU508 fails (S/C).
• Pincushion distortion. (picture attached) (SBR - 6679 information)
• 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)
• C/P button on the front control does not function.
• The picture is nearly or completely invisible if a CDI player is connected on K40 full SCART (RGB) and the screen dimmer is activated. (picture attached)
• Cycles on/off. after a few minutes.
• 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.
• Tuning voltage blocked on 33V or 0V (TRD sets).
• No picture. in UHF. (+ extract of circuit diagram)
• No adjustment of sound. (part of circuit diagram displayed)
• Visible black, unsynchronised TXT klok.
• The display reacts but the tuning does not.
• Dark picture (intermittently).
• Blank raster. (picture attached)
• East-west raster correction fault. (part of circuit diagram displayed)
• Picture-sound-display is intermittent. (+ extract of circuit diagram) (SBR - 6679 information)
• Hiccups when changing channels. (with circuit diagram extract)
• Voltage slightly high. (with circuit diagram extract)
• Linearity fault in upper part of screen.
• Focus problems. Shuts down (after a few minutes). (with circuit diagram extract) (6679 tip from SBR)
• No audio. (+ extract of circuit diagram)
• Line tearing. at top. (part of circuit diagram displayed)
• Poor colour (when cold). (+ extract of circuit diagram)
• The picture is much too wide, east/west does not control. (part of circuit diagram displayed)
• 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)
• No synchronisation. intermittently. Picture shakes. (+ extract of circuit diagram)
• No line osc. (with circuit diagram extract)
• The sound contains noise, no low pitched sound. (with circuit diagram extract)
• Low contrast. in TXT. (+ extract of circuit diagram)
• No picture just loud trumpeting noise. (with circuit diagram extract) (6679 tips)
• Switches to standby (intermittently). (with circuit diagram extract)
• No picture just very bright raster at centre of screen. (+ extract of circuit diagram)
• Line output stage transistor BU508 fails approx every 6 days. (part of circuit diagram displayed)
• No function, stand-by connection has voltage.
• Picture collapses in RF every 2 seconds. Picture OK via scart.
• Pincushion effect on vertical straight lines. (with circuit diagram extract)
• Intermittently picture blanks for approx 1 sec. (part of circuit diagram displayed)
• TV starts up but EHT is missing. Programme number disappears, then "E1" appears.
• Goes into standby with E3 and a few seconds later goes to function. (extract of circuit diagram attached)
• No TXT the indication light lights up. (extract of circuit diagram attached)
• No TXT with the CCT decoder system. (+ extract of circuit diagram) (6679 SBR repair tip)
• Appliance fails. BU508A will become defective and displays E-3. Power supply squeaks. (with circuit diagram extract)
• No vertical deflection. (extract of circuit diagram attached)
• Excessive brightness. (part of circuit diagram displayed)
• Failure of field output chip TDA3650. (with circuit diagram extract)
• Front display corrupt, all segments lit to a varying degree. (picture attached)
• Non-linearity on vertical sync. (with circuit diagram extract) (6679 tips)
• After it has been replaced line BU blows every 2 to 3 days. (part of circuit diagram displayed)
• K9/K11 band switch. (6679 tips)
• Safety test after repair.
• Output signal is occasionally O/C when shown on oscilloscope.
• Dark picture. (picture attached) (service info for SBR -6679)
• Picture OK but display only shows signs.
• No picture. Green and pink raster at the top. (extract of circuit diagram attached)
• No RC functions. (part of circuit diagram displayed)
• Picture runs from left to right, especially on bright pictures. (service info for SBR -6679)
• Beam limiter problem. (with circuit diagram extract)
• No picture. Display OK .
• Focus control replacement. (with circuit diagram extract)
• Occasionally the channel memory or the preselector do not work.
• PSU switches frequently to protection mode (also when lamp is connected). (extract of circuit diagram attached)
• Type of line transistor 7162. (picture attached) (service info for SBR -6679)
• Bright picture. Flyback lines.
• No tuning. only on certain channels.
• 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.
• Faint raster. (extract of circuit diagram attached)
• Very loud sound, cannot be adjusted. No display. (extract of circuit diagram attached)
• E/W adjustment.
• Inverted E-E display, no picture, no sound. (+ extract of circuit diagram) (6679 SBR repair tip)
• Switches to standby after a few hours. Can be switched on again but fault reoccurs. Interim period becomes shorter.
• Picture has shifted inwards in lower picture section. (extract of circuit diagram attached)
• Repeated power supply failure. (with circuit diagram extract)
• Blows components (intermittently). (part of circuit diagram displayed)
• No start-up (when cold). (part of circuit diagram displayed)
• Bottom linearity faulty. (picture attached)
• Blank screen (intermittently). (part of circuit diagram displayed)
• 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.
• Start up from standby after 2 secs. (picture attached)
• UPD8049PC SAA063 has been changed. The display shows 80.
• Interference on channel 2 with TRD 4 system. (picture attached)
• Critical adjustment with user controls. Sometimes it works properly when tapping on cabinet.
• Intermittently dead. (with circuit diagram extract)
• Top of picture has non linear scan, ok when appliance has warmed up. (+ extract of circuit diagram)
• East/west code. The sound disappears, the picture is vague and the appliance constantly arches stations. (6679 SBR repair tip)
• Switches to standby. (with circuit diagram extract)
• Vertical blanking interval still visible in picture after program switch over. (+ extract of circuit diagram)
• Fuse 1101 fails continuously. (extract of circuit diagram attached)
• No picture. intermittently. (+ extract of circuit diagram)
• Power supply whistling and the BU508 is S/C. (+ extract of circuit diagram)
• Dead (intermittently). Squealing from PSU. (extract of circuit diagram attached)
• Whistling noise from FBT. (extract of circuit diagram attached)
• Intermittently parallel stripes on one part of the screen. Shock sensitive.
• Picture too large, E/W indented.
• Switches on, but no EHT available. Channel number disappears and then "E1" is displayed.
• Poor E/W adjustment with changes in contrast. (6679 tip from SBR)
• Noise line on one side of screen. (picture attached)
• Switches off by itself.
• Picture jitters on the upper picture edge. Ok after 5 mins. (picture attached)
• Line deflection BU508V blows.
• Poor horizontal fringy picture. (picture attached)
• Difficulties in tuning on channel. (picture attached) (6679 tips)
• Brightness and colour saturation influence each other. (extract of circuit diagram attached)
• No STEREO.
• Picture width twitches. Beam current dependent. (picture attached)
• Faint white streaks above the picture. (+ extract of circuit diagram)
• Squealing noise. (extract of circuit diagram attached)
• No vertical synchronisation. (part of circuit diagram displayed)
• Poor E/W. Centre of picture is pulled inwards. (part of circuit diagram displayed)
• On/off LED flickering. All front panel symbols light up but no control. (extract of circuit diagram attached)
• Herringbone pattern on raster. High channels are not accepted when tuned. (service info for SBR -6679)
• Power supply BU S/C. (+ extract of circuit diagram)
• V resistor 3186 (2R2/raster unit) burns at switch on. (part of circuit diagram displayed)
• Dim picture. in TXT. No contrast. in TXT. (picture attached)
• The sound goes erratically to max. volume. (+ extract of circuit diagram)
• Jitter with VCR on freeze frame. (part of circuit diagram displayed)
• The colour shimmers or fades. (extract of circuit diagram attached)
• Vertical sync remains occasionally halfway down the frame although it locks correctly. (extract of circuit diagram attached)
• Poor vertical synchronisation. Intermittently flyback lines in lower quarter. (extract of circuit diagram attached)
• Poor audio. only on one channel. (extract of circuit diagram attached)
• No E/W correction. at bottom. (picture attached)
• Erratic functions. (extract of circuit diagram attached)
• Small picture. Picture height and audio volume vary according to picture content. (with circuit diagram extract)
• No function. No start up. (SOPS, IV-F-3). (picture attached)
• No picture. Loud fizzling noise from line deflection. (part of circuit diagram displayed)
• Poor focus. (with circuit diagram extract)
• No tuning, channel no etc. with the standby LED permanently on (sets with 1021 VST module).
• No picture (intermittently). (picture attached)
• Coloured spots in flat square picture tubes.
• 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. (picture attached)
• No synchronisation.
• Horizontal jitter. (+ extract of circuit diagram)
• The sound cuts out occasionally. Only FM noise is heard through the loud speakers. (picture attached)
• E/W-error, trapezium distortion. (+ extract of circuit diagram)
• Low audio. (with circuit diagram extract)
• Cycles on/off.
• Only half of picture visible. (with circuit diagram extract)
• Horizontal lines (TXT data) on the top part of the picture. (picture attached)
• Blank raster, turning up A1 control shows frame collapse. (with circuit diagram extract)
• EHT arcing.
• Stereo problems; switching from mono/stereo. Crackling sounds. (with circuit diagram extract)
• Distorted picture at high white proportion. (with circuit diagram extract)