510710Z / SBR [TV 51 (47/48) cm picture]

• Every 2-3 days TR7162 (BU508V) is destroyed. (510710Z SBR repair tip)
• Vertical blanking interval still visible in picture after program switch over. (part of circuit diagram displayed)
• Replacing line output transistor BU508.
• Repeat failure of TDA3650 & 26V supply. (+ extract of circuit diagram)
• Line output transistor (BU508) defective. (+ extract of circuit diagram)
• Bottom linearity faulty. (extract of circuit diagram attached)
• Muted audio. after a while. (with circuit diagram extract)
• Picture horizontally unstable. (extract of circuit diagram attached)
• Tuning voltage blocked on 33V or 0V (TRD sets).
• Start up from standby after 2 secs. (with circuit diagram extract)
• Beam limiter problem. (picture attached)
• Picture vibrates horizontally. Broken or intermittently double bar. (part of circuit diagram displayed)
• Doesn't switch to standby. Standby LED OK, no display, but picture and sound remains. (service info for SBR -510710Z)
• Dark picture. Audio OK . (with circuit diagram extract)
• Signal/sync/timebase drive problems.
• No TXT. (+ extract of circuit diagram)
• Poor colour (when cold). (with circuit diagram extract)
• Channel indicators permanently display 88. Hissing from EHT capacitor. (extract of circuit diagram attached)
• High-voltage flash-over. (picture attached)
• Intermittent no signals, then will rest to CH1 with volume high.
• The appliance often becomes intermittent when switched on. (picture attached) (SBR - 510710Z information)
• No functions. at start-up. Whistling. at switch-off.
• Blank raster, turning up A1 control shows frame collapse. (with circuit diagram extract)
• Line deflection BU508V blows.
• Starts with E1 and intense fizzling sound. No picture or sound. (part of circuit diagram displayed) (SBR - 510710Z information)
• The sound cuts out occasionally. Only FM noise is heard through the loud speakers. (with circuit diagram extract)
• Picture shifts downwards and then comes up again after a few minutes, picture is then o.k., but is round. (with circuit diagram extract) (service info for SBR -510710Z)
• 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)
• EHT arcing.
• Picture output IC defective after 2-3 weeks. (picture attached)
• Normal values for brightness, volume and colour saturation cannot be stored.
• Starts up gradually. (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. (extract of circuit diagram attached)
• Cycles on/off. after a few minutes.
• Fine horizontal lines on picture, particularly during channel switch-over. Occasionally vertical sync. does not fit in with screen. (510710Z tips)
• Pincushion distortion. (picture attached)
• The picture is much too wide, east/west does not control. (extract of circuit diagram attached)
• After switch on program display P1, then E1. No functions. (part of circuit diagram displayed)
• Rope effect on the right hand side of the picture. (+ extract of circuit diagram)
• Visible flyback lines and colour tints problems. (with circuit diagram extract)
• No tuning, channel no etc. with the standby LED permanently on (sets with 1021 VST module).
• Flyback lines. at top (in TXT). (with circuit diagram extract)
• Line output stage transistor BU508 fails approx every 6 days. (extract of circuit diagram attached)
• Blank raster. (extract of circuit diagram attached)
• Intermittently picture blanks for approx 1 sec. (extract of circuit diagram attached)
• No start up. PSU goes to protection circuit. (part of circuit diagram displayed)
• Picture runs from left to right, especially on bright pictures.
• Picture is off tune in PB.
• Switches to program 1, but no function. Whistles.
• Flyback lines. at top. (with circuit diagram extract) (510710Z tip from SBR)
• BU504 blows after 30 mins. (+ extract of circuit diagram)
• Power supply trips at switch on, producing a fading whistle. (part of circuit diagram displayed)
• No horizontal synchronisation. (picture attached)
• Poor VCR line synchronisation . (extract of circuit diagram attached)
• No picture. Green and pink raster at the top. (part of circuit diagram displayed)
• Sparks on the yoke plug. High voltage is 1500Vpp instead of 1200Vpp. Working voltage 130V is ok. (with circuit diagram extract)
• Sound becomes lower after switch on. (extract of circuit diagram attached)
• No sound or picture. Screen in the black level.
• Unknown indication in the display, no function. (SBR - 510710Z information)
• Vertical fault. Picture is approx 20cm high. Bright background with flyback lines.
• Small picture. Picture height and audio volume vary according to picture content. (part of circuit diagram displayed)
• Poor horizontal fringy picture. (with circuit diagram extract)
• Lines at the top of the picture depending on the picture content. (extract of circuit diagram attached)
• No sound or vision and E3 on the display. (+ extract of circuit diagram)
• Upper vertical linearity defective. Flyback lines on TXT broadcasts. (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. (picture attached)
• No function, 142V is present but R3292 (680R) blows continuously.
• Picture collapses in RF every 2 seconds. Picture OK via scart.
• When calling up TXT page, 2nd digit is incorrectly reproduced, yet correct page appears. (SBR - 510710Z information)
• Power supply BU S/C. (part of circuit diagram displayed)
• Vertical lock 1/3 of the way up the screen. (part of circuit diagram displayed) (service info for SBR -510710Z)
• No picture. intermittently. (with circuit diagram extract)
• Hiccups when changing channels. (extract of circuit diagram attached) (510710Z tips)
• Switches to standby (intermittently). (with circuit diagram extract)
• Error codes. (with circuit diagram extract)
• PSU is defective. (with circuit diagram extract)
• Cycles on/off.
• Predominance of one of the three colours (red, green or blue).
• Voltage slightly high. (with circuit diagram extract)
• Horizontal output transistor defective. (+ extract of circuit diagram)
• Distorted picture at high white proportion. (extract of circuit diagram attached)
• Picture bends at top and vibrates. (+ extract of circuit diagram) (510710Z tips)
• No start-up (when cold). (extract of circuit diagram attached)
• All memory-cells on 56.
• No function, the 141V power supply voltage is only approx 80V. (+ extract of circuit diagram)
• Flyback lines in TXT broadcasts. Upper vertical linearity is defective. (part of circuit diagram displayed)
• How to store personal preferences (PP).
• Set does not go to standby although the LED is lit up. (extract of circuit diagram attached)
• Reduced horizontal size. (picture attached)
• Dead. No line drive. (picture attached)
• Non linear picture. (picture attached)
• Power supply whistling and the BU508 is S/C. (part of circuit diagram displayed)
• Doesn't lock in on channels or stops but tuned off. (extract of circuit diagram attached) (510710Z SBR repair tip)
• Horizontal power stage squeaks.
• No channel storing.
• No picture (intermittently). (picture attached)
• Code numbers for picture tube prints.
• No start-up. Audible noise.
• TV switches to standby after approx 30 mins. E3 in display. (with circuit diagram extract)
• Vertical waves when switching from TXT to normal picture.
• Rolling picture and warps vertically. (extract of circuit diagram attached)
• Tuning drifts. Snowy raster. (part of circuit diagram displayed)
• The power supply goes to protection circuit. (picture attached)
• Screen compressed at the bottom and very quick vertical drift of picture. (+ extract of circuit diagram)
• Line BU goes S/C every fortnight. (+ extract of circuit diagram)
• Dark picture, also by TXT/Scart. Colour OK. (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. (picture attached)
• TXT-replacement.(4822 212 21008T). (with circuit diagram extract)
• Blurred screen. Shifted tuning. Unable to adjust with fine tuning. Sometimes tuning doesn't lock in on stations.
• Occasionally poor frame sync (line).
• Teletext only shows "P100" flying all over the screen out of sync, or shows a teletext page out of sync.
• Burn up in E/W correction circuit (R3170, R3175). (part of circuit diagram displayed) (510710Z tips)
• Low contrast. in TXT. (with circuit diagram extract)
• Raster IC defective after some time. (picture attached)
• Does not stop at S channels during station search. Appliance should be suited to do so.
• Appliance functions only when warm. It fails intermittently when cold.
• No function, no sound, no display and no HT. Only a faint switch-on thud in speakers.
• After it has been replaced line BU blows every 2 to 3 days. (part of circuit diagram displayed)
• Vertical waves on both sides of picture. Unstable picture. (part of circuit diagram displayed)
• E/W fault. Trips. (picture attached)
• Vertical line. (+ extract of circuit diagram) (510710Z tips)
• Very loud sound, cannot be adjusted. No display. (+ extract of circuit diagram) (SBR - 510710Z information)
• Muted audio. Picture OK .
• Blows components (intermittently). (with circuit diagram extract) (service info for SBR -510710Z)
• Only starts up after pressing ON/OFF switch a few times. (+ extract of circuit diagram)
• Shakey picture. No sound on some channels. Appliance starts. (+ extract of circuit diagram)
• After switch-on no picture and sound, 88 in display. When mains switch pressed, snow. TXT and stereo LED lights.
• Switches off by itself.
• The appliance may cut out occasionally and then there is no more picture or sound.
• Dim picture. in TXT. No contrast. in TXT. (part of circuit diagram displayed)
• No picture or teletext, RGB/status line at 2V. (with circuit diagram extract)
• No line drive to line output transistor (part of circuit diagram displayed)
• Too little brightness after DIM command (CDI use). (picture attached) (510710Z SBR repair tip)
• 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.
• Noise line on one side of screen. (extract of circuit diagram attached)
• No power supply regulation. (+ extract of circuit diagram)
• Focus problems. Shuts down (after a few minutes). (part of circuit diagram displayed)
• When switching channels, TV stops for 1 sec.
• No colour. (with circuit diagram extract)
• No TXT with the CCT decoder system. (with circuit diagram extract) (510710Z tips)
• Line tearing. at top. (extract of circuit diagram attached)
• Squealing noise. (part of circuit diagram displayed)
• Whistling from PSU. (extract of circuit diagram attached)
• Flyback lines. when changing channels. (extract of circuit diagram attached)
• Green lines. (+ extract of circuit diagram)
• 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)
• Whistling noise from FBT. (+ extract of circuit diagram)
• No vertical synchronisation. (extract of circuit diagram attached)
• Hum in picture. Contrast dependent effect. (with circuit diagram extract)
• Destroys line output transistors. (part of circuit diagram displayed)
• Slow start-up. (extract of circuit diagram attached)
• No colour when the appliance is switched on (cannot be programmed through memory), picture is dark.
• Display shows functions which were not chosen. (extract of circuit diagram attached)
• Muted audio. intermittently.
• Poor vertical synchronisation. Intermittently flyback lines in lower quarter. (part of circuit diagram displayed)
• PSU hiccups. (510710Z SBR repair tip)
• Power supply cuts out suddenly and whistles. Ok if line BU removed. (part of circuit diagram displayed)
• E/W convex.
• No picture just very bright raster at centre of screen. (+ extract of circuit diagram)
• Picture is distorted on top. Flyback lines. Picture changes according to picture content. (picture attached)
• No start-up. intermittently. Squealing noise. (part of circuit diagram displayed)
• The picture appears then disappears. T26 after D6106, varies from 25 to 10Vcc. (+ extract of circuit diagram) (service info for SBR -510710Z)
• Output signal is occasionally O/C when shown on oscilloscope.
• Vertical linearity defective. (part of circuit diagram displayed)
• Occasionally the channel memory or the preselector do not work.
• Sometimes no vertical deflection; random cramping at top of picture. (extract of circuit diagram attached)
• Goes into standby with E3 and a few seconds later goes to function. (with circuit diagram extract)
• Blanking of the raster, starting at bottom of the picture. (picture attached)
• Lines in picture. on the left. (+ extract of circuit diagram)
• Snowy raster. (part of circuit diagram displayed)
• Very faint raster. (+ extract of circuit diagram)
• Faint white streaks above the picture. (with circuit diagram extract)
• Raster shifted upward. Picture OK.
• Vertical foldover at bottom. (+ extract of circuit diagram) (510710Z SBR repair tip)
• No function or display when first switched on. Starts up OK at second attempt. (with circuit diagram extract)
• No colour. Audio and picture OK . (extract of circuit diagram attached)
• Intermittent or no vertical linearity. (+ extract of circuit diagram)
• No tuning. (+ extract of circuit diagram)
• Switches to standby after a few hours. Can be switched on again but fault reoccurs. Interim period becomes shorter.
• Conversion from TRD to TRD-ECO.
• Picture synchronization in the top third of the screen. (with circuit diagram extract)
• Vertical foldover at top. (+ extract of circuit diagram)
• Coloured spots in flat square picture tubes.
• Pictures bows at edges. Width can be adjusted. (+ extract of circuit diagram)
• Dark picture (intermittently).
• Top of picture has non linear scan, ok when appliance has warmed up. (with circuit diagram extract)
• No horizontal deflection. (+ extract of circuit diagram)
• No function. No start up. (SOPS, IV-F-3). (with circuit diagram extract)
• 300V from power supply.
• Processor for TRD4 control panel.
• No remote control operation on teletext version. (with circuit diagram extract) (510710Z SBR repair tip)
• E/W adjustment.
• The power supply unit shuts off after some time and squeaks. (with circuit diagram extract)
• Coloured lines and sloping picture. (+ extract of circuit diagram)
• E/W fault. (extract of circuit diagram attached)
• PSU and HV unit switch on, but no display and standby LED lights. No linearity.
• No brightness. No colour. intermittently.
• Picture OK but display only shows signs.
• Mains switch and speech-music switch.
• No line drive. (extract of circuit diagram attached)
• Switches to protection mode (intermittently). (part of circuit diagram displayed)
• Transistors TR7131, TR7122 and TR7123 blown. (+ extract of circuit diagram)
• At switch on there is a loud trumpeting and no picture. (+ extract of circuit diagram)
• No STEREO.
• Brightness and or contrast don't work or don't work properly.
• East/West fault.
• The display reacts but the tuning does not.
• Noise in picture. (+ extract of circuit diagram)
• Faint raster. (+ extract of circuit diagram)
• Linearity fault in upper part of screen.
• No functions. (extract of circuit diagram attached)
• Picture shakes. at top (intermittently). (extract of circuit diagram attached)
• Black streaky lines after a few mins. Completely dark picture after approx 5 mins. (+ extract of circuit diagram) (510710Z tips)
• Only half of picture and there is a lot of light. (+ extract of circuit diagram)
• Intermittent loss of colour and picture sways. (picture 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. (extract of circuit diagram attached)
• Dark picture. at bottom (after a while). (extract of circuit diagram attached)
• Distorted picture. (+ extract of circuit diagram)
• No picture at start up. Channel storage ok. Sound, colour, contrast and brightness balance are not stored.
• No start up and humming.
• No function, stand-by connection has voltage.
• One colour missing (intermittently). (part of circuit diagram displayed)
• No audio. Picture OK . (picture attached)
• Red picture (intermittently). (extract of circuit diagram attached)
• Black screen. Audio OK . (+ extract of circuit diagram)
• Low audio. Distorted audio. (part of circuit diagram displayed)
• No synchronisation.
• Picture bounces in upper picture third if a poor signal is present at aerial input. Vertical lines twist. (part of circuit diagram displayed)
• Spontaneous flash over in focus spark gap.
• Vertical problems. (extract of circuit diagram attached)
• No audio. OK via SCART . (extract of circuit diagram attached)
• Picture jitters on the upper picture edge. Ok after 5 mins. (extract of circuit diagram attached)
• Too much brilliance of one cathode of picture tube.
• Black stripes over the whole screen.
• Picture has shifted inwards in lower picture section. (+ extract of circuit diagram)
• No tuning. only on certain channels.
• Critical adjustment with user controls. Sometimes it works properly when tapping on cabinet.
• 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)
• Only noise the display does not light up.
• No picture. Audio OK . (part of circuit diagram displayed)
• Very loud sound, not adjustable. No display.
• No synchronisation. intermittently. Picture shakes. (part of circuit diagram displayed)
• TV starts up but EHT is missing. Programme number disappears, then "E1" appears.
• 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.
• Poor picture. (picture attached)
• Muted audio. (picture attached)
• Type of line transistor 7162. (with circuit diagram extract)
• Poor RC sensitivity. (+ extract of circuit diagram)
• Predominance of blue, faint blue flyback lines visible. (part of circuit diagram displayed)
• Temporary crackling from both speakers, then picture fails for a short time. Unfortunately fault no longer occurs at the moment. (picture attached)
• TDA3650 fails after one week. (part of circuit diagram displayed)
• Misty picture. (picture attached)
• No audio. (extract of circuit diagram attached)
• Blank raster. Audio OK . (+ extract of circuit diagram) (510710Z tips)
• No picture. When switched on, display shows 5 (no bottom segment) and EXT4. E3 after a few secs. (with circuit diagram extract)
• The focusing pot. blows. (+ extract of circuit diagram)
• Poor closure of function door.
• No REC and PB. PSU hiccups. (+ extract of circuit diagram)
• Whistling. No error display.
• Poor IF gain. (extract of circuit diagram attached)
• Switches off and on spontaneously, particularly when putting on a video film and when switching over.
• Squealing from PSU. (picture attached)
• K9/K11 band switch.
• Field flyback lines visible for a second or so when channel changed. They then disappeared. (picture attached)
• No vertical deflection. (+ extract of circuit diagram)
• Picture darkens (after disappearance of green bar) after tuning and storing channel in memory. No adjustment possible.
• No image or sound after start up. Does not lock channels. After 1-2 minutes it comes back to normal. (extract of circuit diagram attached)
• Vertical sync remains occasionally halfway down the frame although it locks correctly. (+ extract of circuit diagram)
• Stereo problems; switching from mono/stereo. Crackling sounds. (picture attached)
• Bright white line in picture, no sound. (picture attached)
• No TXT (intermittently). (+ extract of circuit diagram)
• The colour shimmers or fades. (+ extract of circuit diagram)
• East/west code. The sound disappears, the picture is vague and the appliance constantly arches stations.
• Reduced vertical size. (picture attached)
• Insufficient horizontal and vertical picture aamplitude. Smoke from R3177. (picture attached)
• No picture. Sound available. Intermittently picture appears for 1 sec.
• Occasionally noise in TV (like short attempts to start up), picture width variation and display which disappears. (picture attached)
• Deflection BU fails after approx. 1-2 weeks.
• Trapezium ininformation. (+ extract of circuit diagram)
• Memory loss.
• No start up, displays E3. No 13V. (with circuit diagram extract)
• Pincushion effect on vertical straight lines. (with circuit diagram extract)
• PSU and line transformer chirp. (picture attached)
• No MONO audio. STEREO OK . (510710Z tips)
• All LCD segments are lit. LED flashes abnormally. (extract of circuit diagram attached)
• Horizontal deflection is poor. (picture 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 attached)
• There is an occasional banging noise, the picture shakes. (part of circuit diagram displayed) (SBR - 510710Z information)
• Jitter with VCR on freeze frame. (picture attached)
• Picture unstable on certain stations when cold. Also TXT horizontally unstable.
• There is an occasional beating noise.
• No picture just loud trumpeting noise. (extract of circuit diagram attached)
• Line output transistor fails repeatedly.
• White lines, no focus, too much brightness. 15cm in the middle of the picture. (with circuit diagram extract)
• On cable reception, stations cannot be tuned or the stations wander off.
• BU826 and main fuse are defective. When starting after replacement, the power supply hiccups once and is defective again. (extract of circuit diagram attached)
• Switches to standby. Motorboating. Switches on and off. (Non-SOPS, IV-B-3) (with circuit diagram extract)
• C/P button on the front control does not function.
• Picture is erased at 8-10 sec intervals. (part of circuit diagram displayed)
• Hums and crackles. Sound comes from loudspeaker and chassis. Flashing LED.
• No startup. Banging noise audible.
• Switches to standby (after start-up).
• Flashover then weak contrast. (picture attached) (SBR - 510710Z information)
• Low audio. (picture attached)
• Total loss of memory immediately after CTV is switched off (brightness, colour, contrast, sound and channels). (+ extract of circuit diagram) (510710Z tips)
• No raster. Audio OK . (part of circuit diagram displayed)
• TXT-lines in picture for three seconds at switch over. Then perfect picture. (with circuit diagram extract) (510710Z tips)
• Line transformer installation.
• Repeated failure of BU508A line output transistor. (picture attached)
• All presettings disappear after turning on the appliance.
• Intermittently loses vertical sync. Black line slowly moving up and down picture. Picture and sound OK. (part of circuit diagram displayed)
• Frequency divider 4822 212 21226. (510710Z tips)
• Horizontal collapse. after warm-up. No E/W correction. intermittently.
• 2R2 resistor always blows. (picture attached)
• Instable picture. Picture height and picture width change depending on the volume. Picture folds over at the top.
• Excessive brightness. (with circuit diagram extract)
• Switches on, but no EHT available. Channel number disappears and then "E1" is displayed.
• No drive at BU826. (picture attached)
• Occasionally picture darkens and at the same time raster disappears. (+ extract of circuit diagram)
• Volume too high. Excessive colour and incorrect brightness at switch on.
• Hum in picture. Error disappears after approx10 mins operation.
• No picture. intermittently. HV OK. . (+ extract of circuit diagram)
• Sometimes when switched on set gives a squealing noise and no sound or vision. (extract of circuit diagram attached)
• In display all segments lit.
• Power supply BU blows. (picture attached)
• Brightness and colour saturation influence each other. (picture attached)
• Arcing. (part of circuit diagram displayed)
• Voltages measured on pins IC TDA3650.
• TXT lines at top of picture. (extract of circuit diagram attached) (510710Z tip from SBR)
• Difficulties in tuning on channel. (picture attached)
• Interference on channel 2 with TRD 4 system. (with circuit diagram extract)
• Hums and crackling. LED flashes. (part of circuit diagram displayed)
• No start-up. (with circuit diagram extract)
• No TXT the indication light lights up. (+ extract of circuit diagram)
• Changing channel. (with circuit diagram extract)
• Picture lacks width after 5mins from start-up. Displays E3. (picture attached)
• Visible black, unsynchronised TXT klok.
• Wide white bar in the picture, no reception. (extract of circuit diagram attached) (510710Z SBR repair tip)
• Distorted picture. Snow in picture. (+ extract of circuit diagram)
• On/off LED flickering. All front panel symbols light up but no control. (with circuit diagram extract)
• Excessive horizontal size. at top. (extract of circuit diagram attached)
• "88" on the display. No picture. No sound. (picture attached)
• No picture on teletext. (part of circuit diagram displayed) (SBR - 510710Z information)
• Frame foldover & text interference at top of screen. (with circuit diagram extract)
• Channel drifts briefly into UHF between approx channel 30 and 37.
• After installing the vertical ICs there are stripes in the top part of the picture. Electrolytic 3300uF is ok. (extract of circuit diagram attached)
• Focus control replacement. (picture attached)
• PSU switches frequently to protection mode (also when lamp is connected). (extract of circuit diagram attached)
• The picture is too small. The power supply is too weak. (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.
• Unstable picture. (picture attached)
• Horizontal lines (TXT data) on the top part of the picture. (extract of circuit diagram attached)
• UPD8049PC SAA063 has been changed. The display shows 80.
• Blanking valency in picture (black bar in 3/4 of picture). (picture attached)
• Switches to standby. (extract of circuit diagram attached)
• Stuck in standby. (+ extract of circuit diagram)
• Line oscillator chip failure after an EHT flashover. (picture attached) (SBR - 510710Z information)
• TV picture slightly visible when in TXT mode. (picture attached) (service info for SBR -510710Z)
• Lines in picture. at top . (part of circuit diagram displayed)
• Erratic functions. (part of circuit diagram displayed)
• HT transistor blows continuously (short circuit).
• Rolling picture for 5 secs after switching from VHF to UHF. Poor raster synchronisation.
• After operating for 12-14 days, the line-BU blows. (extract of circuit diagram attached)
• Searches for channels continuously. (part of circuit diagram displayed)
• No picture. Display OK .
• Front display corrupt, all segments lit to a varying degree. (with circuit diagram extract)
• Picture width twitches. Beam current dependent. (extract of circuit diagram attached)
• Horizontal sychronisation is distorted. (extract of circuit diagram attached)
• Adjustment. (510710Z SBR repair tip)
• No red. (picture attached)
• Loses frame correction slowly. (picture attached)
• No display. No channel search. Picture OK . (extract of circuit diagram attached) (510710Z tip from SBR)
• Vertical IC defective after mounting. (with circuit diagram extract)
• Occasionally thin white lines, picture bounce at the side and top edge.
• No picture, only sound present. When appliance is switched off a white line appears.
• Poor audio. only on one channel. (+ extract of circuit diagram)
• E/W-error, trapezium distortion. (part of circuit diagram displayed)
• Lightning flash; K40 and KT4 are very sensitive to induction voltage. (extract of circuit diagram attached) (SBR - 510710Z information)
• Switches to protection mode (after a few minutes). (picture attached)
• Intermittently parallel stripes on one part of the screen. Shock sensitive.
• The vertical lines are ribbed, especially in the test picture. (+ extract of circuit diagram)
• Switches to protection mode (after a while). (+ extract of circuit diagram)
• The line oscillator is unstable, the picture shakes. (part of circuit diagram displayed)
• The TXT quivers when a V6100 tuner is connected. (picture 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)
• No line osc. (extract of circuit diagram attached)
• Vertical collapse. (+ extract of circuit diagram)
• Poor vertical synchronisation. (part of circuit diagram displayed)
• V resistor 3186 (2R2/raster unit) burns at switch on. (+ extract of circuit diagram)
• No picture or sound after spark flashover in the HS cable. (with circuit diagram extract)
• Picture too large, E/W indented.
• Defective after lightning. (picture attached)
• Rectification of IM 84VK049. (with circuit diagram extract) (510710Z tips)
• Set intermittent dead, when faulty E1 displayed. (+ extract of circuit diagram)
• No picture. in UHF. (+ extract of circuit diagram)
• The sound contains noise, no low pitched sound. (picture attached)
• Repeated power supply failure. (+ extract of circuit diagram)
• Dark screen. R3186 blows up. What is the value of R3186? (extract of circuit diagram attached)
• In the middle of the picture a stripe which is approx 15cm high appears over the entire picture width.
• Picture-sound-display is intermittent. (with circuit diagram extract) (SBR - 510710Z information)
• Failure of field output chip TDA3650. (with circuit diagram extract)
• The picture is nearly or completely invisible if a CDI player is connected on K40 full SCART (RGB) and the screen dimmer is activated. (with circuit diagram extract) (510710Z tip from SBR)
• Intermittent loss of sound and vision, with just snow and no channel display. (with circuit diagram extract)
• Hum in power supply audible. (picture attached)
• Occasionally picture runs through (line).
• Flyback lines. in PB. (part of circuit diagram displayed)
• Channel loss at switch on after memorising channels. (with circuit diagram extract)
• Red picture. (+ extract of circuit diagram)
• Picture intermittently goes to negative or is shifted laterally. (510710Z tip from SBR)
• Horizontal jitter. (picture attached)
• No E/W correction. at bottom. (picture attached)
• No LCD on front panel. (extract of circuit diagram attached)
• Picture overbright on left hand side with vertical lines.
• Dead (intermittently). Squealing from PSU. (+ extract of circuit diagram)
• The sound goes erratically to max. volume. (+ extract of circuit diagram)
• Only half of picture visible. (picture attached)
• East/west correction is defective or the power supply gurgles. (picture attached)
• Blank screen (intermittently). (picture attached)
• No E/W correction. (extract of circuit diagram attached)
• Channels "up and down" only work on the RC.
• Memory values for picture, sound and channels are lost. (with circuit diagram extract)
• Peak white bright band approx. 4" across screen. Then set dead. (with circuit diagram extract)
• Herringbone pattern on raster. High channels are not accepted when tuned.
• Fuse 1101 fails continuously. (extract of circuit diagram attached)
• Approx 5cm distortion on top of picture with any station, in cold conditions. (with circuit diagram extract)
• When switching on, main supply reduces to about 24V and then no function.
• Whines loudly at switch on and will not start up. (part of circuit diagram displayed)
• Goes into standby each time channel is changed manually or by the RCU.
• Problems with the vertical deflection, picture folds at the top edge. (extract of circuit diagram attached)
• PSU whistles. Line output transistor BU508 fails (S/C). (service info for SBR -510710Z)
• Top of picture is non linear with teletext lines. (extract of circuit diagram attached)
• Picture shifts and jitters depending on picture content.
• Video and bottom half of scan are missing with extremely bright raster. (extract of circuit diagram attached)
• No picture. after a few seconds. (+ extract of circuit diagram)
• Poor E/W. Centre of picture is pulled inwards. (with circuit diagram extract)
• BU508 fails continuously. (extract of circuit diagram attached)
• The line end stage transistor 7162 heats up. The base and collector pulses are ok, the transistor blows. (extract of circuit diagram attached)
• Poor E/W adjustment with changes in contrast.
• No raster. (part of circuit diagram displayed)
• No adjustment of sound. (+ extract of circuit diagram)
• East-west raster correction fault. (part of circuit diagram displayed) (510710Z tips)
• Dark picture. (picture attached)
• Inverted E-E display, no picture, no sound. (+ extract of circuit diagram)
• The station memory loses the station programming after about 3 weeks.
• Line pulling/frame jitter. (part of circuit diagram displayed)
• Blanking fails, lines run through and sound is . (picture attached)
• Tripping. (extract of circuit diagram attached)
• Intermittently dead. (with circuit diagram extract)
• E/W failure,temperature sensitive. (+ extract of circuit diagram)
• Herringone pattern and upper channels are not accepted when tuning.
• The TXT info appears at top of picture when cold. OK after 5 mins. (with circuit diagram extract)
• Poor focus. (extract of circuit diagram attached)
• No RC functions. (+ extract of circuit diagram)
• After about 7 days the vertical endstage IC TDA3650 blows again. All the voltages are ok. (extract of circuit diagram attached)
• Normal off air picture is fine but teletext is very dim with hardly any contrast. (with circuit diagram extract)
• Appliance fails. BU508A will become defective and displays E-3. Power supply squeaks. (picture attached) (510710Z SBR repair tip)
• The appliance gurgles occasionally. (picture attached)
• Bright picture. Flyback lines.
• Horizontal lines across the picture, sometimes picture content in the middle of the screen disappears (then black bars across the picture). (+ extract of circuit diagram)
• Non-linearity on vertical sync. (picture attached)
• No picture. (with circuit diagram extract)
• Line tearing in upper third of picture after longer operation. (part of circuit diagram displayed)
• Picture rolls. (with circuit diagram extract)
• Picture takes 10 mins to appear. (part of circuit diagram displayed)
• No picture. Loud fizzling noise from line deflection. (picture attached)
• Switches to standby (after a few minutes). (part of circuit diagram displayed)
• Safety test after repair.
• Test picture visible in the background in TXT mode. (picture attached)