5621 / SBR [TV]

• No display. No channel search. Picture OK . (part of circuit diagram displayed)
• Snowy raster. (part of circuit diagram displayed)
• No picture at start up. Channel storage ok. Sound, colour, contrast and brightness balance are not stored.
• PSU switches frequently to protection mode (also when lamp is connected). (part of circuit diagram displayed)
• Pictures bows at edges. Width can be adjusted. (extract of circuit diagram attached)
• Whistling from PSU. (with circuit diagram extract)
• No sound or vision and E3 on the display. (extract of circuit diagram attached)
• Green lines. (with circuit diagram extract)
• Picture unstable on certain stations when cold. Also TXT horizontally unstable.
• Switches off by itself.
• PSU is defective. (picture attached) (5621 tip from SBR)
• Horizontal sychronisation is distorted. (+ extract of circuit diagram)
• When switching on, main supply reduces to about 24V and then no function.
• Tripping. (part of circuit diagram displayed)
• The station memory loses the station programming after about 3 weeks.
• Power supply trips at switch on, producing a fading whistle. (part of circuit diagram displayed)
• No TXT the indication light lights up. (picture attached)
• Stuck in standby. (with circuit diagram extract)
• On/off LED flickering. All front panel symbols light up but no control. (picture attached)
• No LCD on front panel. (with circuit diagram extract)
• Defective after lightning. (part of circuit diagram displayed)
• Critical adjustment with user controls. Sometimes it works properly when tapping on cabinet.
• Rolling picture and warps vertically. (+ extract of circuit diagram)
• One colour missing (intermittently). (extract of circuit diagram attached) (5621 SBR repair tip)
• Raster IC defective after some time. (with circuit diagram extract)
• Lightning flash; K40 and KT4 are very sensitive to induction voltage. (+ extract of circuit diagram)
• All memory-cells on 56. (5621 tips)
• Distorted picture at high white proportion. (part of circuit diagram displayed)
• Picture horizontally unstable. (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. (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. (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. (+ extract of circuit diagram)
• Intermittently dead. (part of circuit diagram displayed)
• The appliance may cut out occasionally and then there is no more picture or sound.
• Insufficient horizontal and vertical picture aamplitude. Smoke from R3177. (with circuit diagram extract)
• No start-up. Audible noise.
• Low contrast. in TXT. (extract of circuit diagram attached)
• No brightness. No colour. intermittently.
• Tuning drifts. Snowy raster. (part of circuit diagram displayed)
• Picture takes 10 mins to appear. (extract of circuit diagram attached)
• Squealing noise. (picture attached)
• Rope effect on the right hand side of the picture. (part of circuit diagram displayed)
• When switching channels, TV stops for 1 sec.
• Vertical sync remains occasionally halfway down the frame although it locks correctly. (+ extract of circuit diagram)
• Horizontal collapse. after warm-up. No E/W correction. intermittently.
• Spontaneous flash over in focus spark gap.
• Voltages measured on pins IC TDA3650.
• Brightness and colour saturation influence each other. (+ extract of circuit diagram)
• The line oscillator is unstable, the picture shakes. (+ extract of circuit diagram)
• Poor E/W. Centre of picture is pulled inwards. (with circuit diagram extract)
• E/W convex. (5621 tips)
• There is an occasional beating noise.
• No function, no sound, no display and no HT. Only a faint switch-on thud in speakers.
• TXT-lines in picture for three seconds at switch over. Then perfect picture. (with circuit diagram extract)
• Line output transistor (BU508) defective. (part of circuit diagram displayed)
• Horizontal deflection is poor. (extract of circuit diagram attached)
• After it has been replaced line BU blows every 2 to 3 days. (with circuit diagram extract)
• Hum in picture. Contrast dependent effect. (with circuit diagram extract)
• Channel indicators permanently display 88. Hissing from EHT capacitor. (part of circuit diagram displayed)
• Replacing line output transistor BU508. (service info for SBR -5621)
• No colour. (extract of circuit diagram attached)
• Non linear picture. (part of circuit diagram displayed)
• Whistling noise from FBT. (extract of circuit diagram attached)
• Switches to program 1, but no function. Whistles.
• Channel loss at switch on after memorising channels. (+ extract of circuit diagram)
• The sound cuts out occasionally. Only FM noise is heard through the loud speakers. (part of circuit diagram displayed)
• Small picture. Picture height and audio volume vary according to picture content. (with circuit diagram extract)
• Deflection BU fails after approx. 1-2 weeks.
• No E/W correction. at bottom. (extract of circuit diagram attached)
• Sound becomes lower after switch on. (part of circuit diagram displayed)
• Line tearing in upper third of picture after longer operation. (+ extract of circuit diagram) (SBR - 5621 information)
• The colour shimmers or fades. (extract of circuit diagram attached)
• Goes into standby each time channel is changed manually or by the RCU.
• Red picture. (part of circuit diagram displayed)
• Occasionally noise in TV (like short attempts to start up), picture width variation and display which disappears. (part of circuit diagram displayed)
• Reduced vertical size. (part of circuit diagram displayed)
• Horizontal lines across the picture, sometimes picture content in the middle of the screen disappears (then black bars across the picture). (picture attached)
• The TXT info appears at top of picture when cold. OK after 5 mins. (+ extract of circuit diagram)
• Picture lacks width after 5mins from start-up. Displays E3. (picture attached)
• E/W fault. Trips. (+ extract of circuit diagram)
• No picture. Display OK .
• Code numbers for picture tube prints.
• No function, 142V is present but R3292 (680R) blows continuously.
• No start-up (when cold). (part of circuit diagram displayed)
• No line drive to line output transistor (part of circuit diagram displayed)
• No picture just very bright raster at centre of screen. (extract of circuit diagram attached)
• The appliance often becomes intermittent when switched on. (picture attached)
• Whistling. No error display.
• No colour. Audio and picture OK . (part of circuit diagram displayed)
• No drive at BU826. (extract of circuit diagram attached)
• No picture. intermittently. HV OK. . (extract of circuit diagram attached)
• Upper vertical linearity defective. Flyback lines on TXT broadcasts. (with circuit diagram extract)
• Intermittent no signals, then will rest to CH1 with volume high. (SBR - 5621 information)
• Interference on channel 2 with TRD 4 system. (extract of circuit diagram attached)
• The TXT quivers when a V6100 tuner is connected. (with circuit diagram extract)
• Misty picture. (+ extract of circuit diagram)
• No functions. (extract of circuit diagram attached)
• When calling up TXT page, 2nd digit is incorrectly reproduced, yet correct page appears. (5621 SBR repair tip)
• BU504 blows after 30 mins. (with circuit diagram extract)
• Occasionally the channel memory or the preselector do not work.
• 300V from power supply.
• Noise line on one side of screen. (extract of circuit diagram attached)
• BU508 fails continuously. (+ extract of circuit diagram) (5621 tip from SBR)
• No colour when the appliance is switched on (cannot be programmed through memory), picture is dark.
• Dark picture. (with circuit diagram extract)
• Trapezium ininformation. (+ extract of circuit diagram)
• Only starts up after pressing ON/OFF switch a few times. (part of circuit diagram displayed)
• No start-up. intermittently. Squealing noise. (picture attached)
• Picture runs from left to right, especially on bright pictures.
• The focusing pot. blows. (extract of circuit diagram attached)
• Horizontal power stage squeaks.
• UPD8049PC SAA063 has been changed. The display shows 80.
• Incorrect TXT, ie. instead of a 6, an 8 will appear, or the appliance goes back to regular picture position. (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. (with circuit diagram extract)
• Vertical problems. (+ extract of circuit diagram)
• Visible flyback lines and colour tints problems. (with circuit diagram extract)
• Appliance functions only when warm. It fails intermittently when cold.
• No adjustment of sound. (picture attached)
• No picture just loud trumpeting noise. (picture attached)
• Problems with the vertical deflection, picture folds at the top edge. (part of circuit diagram displayed)
• 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. (extract of circuit diagram attached)
• Power supply cuts out suddenly and whistles. Ok if line BU removed. (part of circuit diagram displayed)
• Black screen. Audio OK . (extract of circuit diagram attached)
• Sparks on the yoke plug. High voltage is 1500Vpp instead of 1200Vpp. Working voltage 130V is ok. (picture attached)
• No MONO audio. STEREO OK .
• Start up from standby after 2 secs. (+ extract of circuit diagram)
• No synchronisation.
• The appliance gurgles occasionally. (picture attached) (5621 tips)
• Coloured lines and sloping picture. (extract of circuit diagram attached)
• Blank raster. Audio OK . (extract of circuit diagram attached)
• Vertical foldover at bottom. (with circuit diagram extract)
• Power supply BU blows. (picture attached)
• Line output transistor fails repeatedly.
• No function or display when first switched on. Starts up OK at second attempt. (+ extract of circuit diagram)
• Pincushion distortion. (picture attached)
• Loses frame correction slowly. (picture attached)
• No TXT with the CCT decoder system. (+ extract of circuit diagram)
• Picture shakes. at top (intermittently). (+ extract of circuit diagram) (5621 tips)
• No picture. When switched on, display shows 5 (no bottom segment) and EXT4. E3 after a few secs. (extract of circuit diagram attached) (SBR - 5621 information)
• Dark picture, also by TXT/Scart. Colour OK. (+ extract of circuit diagram)
• Flyback lines in TXT broadcasts. Upper vertical linearity is defective. (part of circuit diagram displayed)
• Hums and crackling. LED flashes. (+ extract of circuit diagram)
• Intermittently parallel stripes on one part of the screen. Shock sensitive.
• After switch-on no picture and sound, 88 in display. When mains switch pressed, snow. TXT and stereo LED lights.
• Instable picture. Picture height and picture width change depending on the volume. Picture folds over at the top.
• No line osc. (extract of circuit diagram attached)
• Signal/sync/timebase drive problems.
• Poor E/W adjustment with changes in contrast.
• Top of picture is non linear with teletext lines. (part of circuit diagram displayed)
• Predominance of blue, faint blue flyback lines visible. (with circuit diagram extract)
• No picture or teletext, RGB/status line at 2V. (with circuit diagram extract)
• Switches to standby (after a few minutes). (part of circuit diagram displayed)
• No REC and PB. PSU hiccups. (extract of circuit diagram attached)
• Switches to standby after a few hours. Can be switched on again but fault reoccurs. Interim period becomes shorter.
• Bright white line in picture, no sound. (+ extract of circuit diagram)
• Bottom linearity faulty. (part of circuit diagram displayed)
• Occasionally poor frame sync (line).
• No STEREO.
• Set intermittent dead, when faulty E1 displayed. (extract of circuit diagram attached)
• Vertical lock 1/3 of the way up the screen. (part of circuit diagram displayed)
• Tuning voltage blocked on 33V or 0V (TRD sets). (5621 SBR repair tip)
• Muted audio. after a while. (+ extract of circuit diagram)
• Herringone pattern and upper channels are not accepted when tuning.
• Repeat failure of TDA3650 & 26V supply. (with circuit diagram extract)
• Picture-sound-display is intermittent. (with circuit diagram extract) (SBR - 5621 information)
• Only noise the display does not light up.
• Occasionally picture runs through (line).
• No picture. (part of circuit diagram displayed)
• No picture. intermittently. (+ extract of circuit diagram)
• Picture jitters on the upper picture edge. Ok after 5 mins. (with circuit diagram extract)
• Picture synchronization in the top third of the screen. (picture attached) (service info for SBR -5621)
• Power supply BU S/C. (with circuit diagram extract)
• PSU and line transformer chirp. (extract of circuit diagram attached)
• Hiccups when changing channels. (+ extract of circuit diagram)
• PSU and HV unit switch on, but no display and standby LED lights. No linearity.
• No picture or sound after spark flashover in the HS cable. (extract of circuit diagram attached)
• Every 2-3 days TR7162 (BU508V) is destroyed.
• Horizontal output transistor defective. (+ extract of circuit diagram)
• Frame foldover & text interference at top of screen. (picture attached)
• Very loud sound, cannot be adjusted. No display. (picture attached)
• No startup. Banging noise audible. (5621 tips)
• Switches to standby. Motorboating. Switches on and off. (Non-SOPS, IV-B-3) (part of circuit diagram displayed)
• Focus control replacement. (extract of circuit diagram attached)
• Picture overbright on left hand side with vertical lines.
• No picture (intermittently). (+ extract of circuit diagram)
• No channel storing. (5621 tip from SBR)
• No picture. after a few seconds. (part of circuit diagram displayed)
• Blank raster. (picture attached)
• Muted audio. Picture OK .
• No colour. IC-TDA3562 has been changed with no result. There must be 2-4V on pin 6 but there is only 0.4V. (picture attached)
• Poor audio. only on one channel. (picture attached)
• Unstable picture. (picture attached) (5621 tips)
• East-west raster correction fault. (part of circuit diagram displayed)
• TV starts up but EHT is missing. Programme number disappears, then "E1" appears.
• Picture vibrates horizontally. Broken or intermittently double bar. (picture attached)
• Wide white bar in the picture, no reception. (extract of circuit diagram attached)
• No E/W correction. (with circuit diagram extract)
• Dim picture. in TXT. No contrast. in TXT. (part of circuit diagram displayed)
• Memory values for picture, sound and channels are lost. (extract of circuit diagram attached)
• Dark picture. at bottom (after a while). (extract of circuit diagram attached)
• 2R2 resistor always blows. (+ extract of circuit diagram)
• Very faint raster. (picture attached)
• Poor horizontal fringy picture. (picture attached)
• Picture intermittently goes to negative or is shifted laterally.
• Teletext only shows a green notice "P100" running on the screen, or Teletext is displayed but out of sync.
• Hum in power supply audible. (+ extract of circuit diagram)
• All presettings disappear after turning on the appliance. (service info for SBR -5621)
• Picture darkens (after disappearance of green bar) after tuning and storing channel in memory. No adjustment possible. (5621 SBR repair tip)
• East/West fault.
• BU826 and main fuse are defective. When starting after replacement, the power supply hiccups once and is defective again. (part of circuit diagram displayed)
• Fuse 1101 fails continuously. (+ extract of circuit diagram)
• Poor VCR line synchronisation . (picture attached) (SBR - 5621 information)
• Temporary crackling from both speakers, then picture fails for a short time. Unfortunately fault no longer occurs at the moment. (part of circuit diagram displayed)
• Approx 5cm distortion on top of picture with any station, in cold conditions. (picture attached)
• How to store personal preferences (PP).
• Poor IF gain. (with circuit diagram extract)
• Poor vertical synchronisation. (with circuit diagram extract)
• Intermittently loses vertical sync. Black line slowly moving up and down picture. Picture and sound OK. (extract of circuit diagram attached)
• Switches to protection mode (after a few minutes). (+ extract of circuit diagram)
• Burn up in E/W correction circuit (R3170, R3175). (with circuit diagram extract)
• No start-up. (+ extract of circuit diagram)
• Picture has shifted inwards in lower picture section. (with circuit diagram extract)
• Dark picture. Audio OK . (part of circuit diagram displayed)
• E/W failure,temperature sensitive. (with circuit diagram extract)
• Destroys line output transistors. (picture attached)
• The sound contains noise, no low pitched sound. (part of circuit diagram displayed)
• No horizontal synchronisation. (extract of circuit diagram attached)
• Focus problems. Shuts down (after a few minutes). (with circuit diagram extract)
• Black stripes over the whole screen.
• No audio. OK via SCART . (with circuit diagram extract)
• Picture too large, E/W indented.
• No picture, only sound present. When appliance is switched off a white line appears.
• Vertical fault. Picture is approx 20cm high. Bright background with flyback lines.
• Line output stage transistor BU508 fails approx every 6 days. (with circuit diagram extract)
• Flyback lines. at top (in TXT). (+ extract of circuit diagram)
• Picture is off tune in PB.
• There is an occasional banging noise, the picture shakes. (part of circuit diagram displayed) (service info for SBR -5621)
• No audio. (+ extract of circuit diagram)
• Only half of picture visible. (+ extract of circuit diagram)
• Line transformer installation.
• Total loss of memory immediately after CTV is switched off (brightness, colour, contrast, sound and channels). (+ extract of circuit diagram)
• Blurred screen. Shifted tuning. Unable to adjust with fine tuning. Sometimes tuning doesn't lock in on stations.
• Transistors TR7131, TR7122 and TR7123 blown. (extract of circuit diagram attached)
• Noise in picture. (with circuit diagram extract)
• Rectification of IM 84VK049. (part of circuit diagram displayed)
• TDA3650 fails after one week. (part of circuit diagram displayed)
• Dark picture (intermittently).
• The power supply goes to protection circuit. (with circuit diagram extract)
• No functions. at start-up. Whistling. at switch-off.
• Low audio. (picture attached) (5621 SBR repair tip)
• Frequency divider 4822 212 21226.
• No picture. Audio OK . (with circuit diagram extract)
• In the middle of the picture a stripe which is approx 15cm high appears over the entire picture width.
• No vertical synchronisation. (extract of circuit diagram attached)
• Flashover then weak contrast. (picture attached)
• No tuning. (part of circuit diagram displayed)
• Beam limiter problem. (+ extract of circuit diagram)
• Slow start-up. (extract of circuit diagram attached)
• No start up and humming.
• Picture output IC defective after 2-3 weeks. (part of circuit diagram displayed)
• Reduced horizontal size. (extract of circuit diagram attached)
• White lines, no focus, too much brightness. 15cm in the middle of the picture. (part of circuit diagram displayed)
• The power supply unit shuts off after some time and squeaks. (extract of circuit diagram attached)
• Cycles on/off. after a few minutes.
• After switch on program display P1, then E1. No functions. (picture attached)
• C/P button on the front control does not function.
• Vertical linearity defective. (part of circuit diagram displayed)
• No raster. (+ extract of circuit diagram) (SBR - 5621 information)
• No audio. Picture OK . (+ extract of circuit diagram) (5621 tip from SBR)
• 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)
• Lines at the top of the picture depending on the picture content. (with circuit diagram extract)
• Arcing. (picture attached)
• No tuning. only on certain channels.
• Error codes. (picture attached)
• Line tearing. at top. (part of circuit diagram displayed)
• Linearity fault in upper part of screen.
• Volume too high. Excessive colour and incorrect brightness at switch on.
• Voltage slightly high. (part of circuit diagram displayed)
• Switches off and on spontaneously, particularly when putting on a video film and when switching over.
• Horizontal lines (TXT data) on the top part of the picture. (extract of circuit diagram attached)
• Occasionally thin white lines, picture bounce at the side and top edge.
• Normal off air picture is fine but teletext is very dim with hardly any contrast. (extract of circuit diagram attached)
• Switches to standby (intermittently). (extract of circuit diagram attached) (service info for SBR -5621)
• Distorted picture. (+ extract of circuit diagram)
• Bright picture. Flyback lines.
• 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.
• No vertical deflection. (part of circuit diagram displayed)
• Line oscillator chip failure after an EHT flashover. (with circuit diagram extract)
• Visible black, unsynchronised TXT klok.
• Display shows functions which were not chosen. (part of circuit diagram displayed)
• No RC functions. (with circuit diagram extract)
• Intermittently picture blanks for approx 1 sec. (with circuit diagram extract)
• Coloured spots in flat square picture tubes.
• Picture is erased at 8-10 sec intervals. (+ extract of circuit diagram)
• East/west code. The sound disappears, the picture is vague and the appliance constantly arches stations.
• Muted audio. (part of circuit diagram displayed)
• Blank raster, turning up A1 control shows frame collapse. (extract of circuit diagram attached)
• The picture appears then disappears. T26 after D6106, varies from 25 to 10Vcc. (picture attached)
• Set does not go to standby although the LED is lit up. (extract of circuit diagram attached)
• HT transistor blows continuously (short circuit).
• Distorted picture. Snow in picture. (extract of circuit diagram attached)
• After installing the vertical ICs there are stripes in the top part of the picture. Electrolytic 3300uF is ok. (+ extract of circuit diagram)
• Conversion from TRD to TRD-ECO.
• No TXT (intermittently). (+ extract of circuit diagram)
• Vertical IC defective after mounting. (with circuit diagram extract)
• Repeated power supply failure. (part of circuit diagram displayed)
• V resistor 3186 (2R2/raster unit) burns at switch on. (with circuit diagram extract)
• Flyback lines. when changing channels. (picture attached)
• Unknown indication in the display, no function.
• Occasionally picture darkens and at the same time raster disappears. (extract of circuit diagram attached)
• No picture. in UHF. (extract of circuit diagram attached)
• No picture on teletext. (extract of circuit diagram attached)
• All LCD segments are lit. LED flashes abnormally. (+ extract of circuit diagram)
• Line BU goes S/C every fortnight. (part of circuit diagram displayed)
• Adjustment.
• Excessive horizontal size. at top. (part of circuit diagram displayed)
• Processor for TRD4 control panel.
• PSU whistles. Line output transistor BU508 fails (S/C).
• Poor vertical synchronisation. Intermittently flyback lines in lower quarter. (part of circuit diagram displayed)
• Normal values for brightness, volume and colour saturation cannot be stored.
• Faint raster. (+ extract of circuit diagram)
• Flyback lines. in PB. (+ extract of circuit diagram) (5621 SBR repair tip)
• Switches to protection mode (after a while). (part of circuit diagram displayed)
• At switch on there is a loud trumpeting and no picture. (part of circuit diagram displayed)
• Difficulties in tuning on channel. (extract of circuit diagram attached)
• Jitter with VCR on freeze frame. (with circuit diagram extract)
• Picture is distorted on top. Flyback lines. Picture changes according to picture content. (part of circuit diagram displayed)
• Raster shifted upward. Picture OK.
• Too little brightness after DIM command (CDI use). (picture attached)
• Starts with E1 and intense fizzling sound. No picture or sound. (with circuit diagram extract)
• TV switches to standby after approx 30 mins. E3 in display. (picture attached) (service info for SBR -5621)
• Type of line transistor 7162. (part of circuit diagram displayed) (5621 tip from SBR)
• No sound or picture. Screen in the black level.
• Dead. No line drive. (extract of circuit diagram attached)
• No horizontal deflection. (part of circuit diagram displayed)
• 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)
• Picture width twitches. Beam current dependent. (picture attached)
• Picture shifts and jitters depending on picture content.
• Line deflection BU508V blows.
• Doesn't switch to standby. Standby LED OK, no display, but picture and sound remains.
• Switches to standby. (+ extract of circuit diagram)
• Stereo problems; switching from mono/stereo. Crackling sounds. (part of circuit diagram displayed)
• The display reacts but the tuning does not.
• Front display corrupt, all segments lit to a varying degree. (picture attached)
• No power supply regulation. (with circuit diagram extract)
• Excessive brightness. (part of circuit diagram displayed)
• No picture. Sound available. Intermittently picture appears for 1 sec.
• Inverted E-E display, no picture, no sound. (picture attached) (service info for SBR -5621)
• Lines in picture. at top . (with circuit diagram extract)
• Only half of picture and there is a lot of light. (+ extract of circuit diagram)
• Vertical waves when switching from TXT to normal picture. (service info for SBR -5621)
• Video and bottom half of scan are missing with extremely bright raster. (with circuit diagram extract)
• Non-linearity on vertical sync. (part of circuit diagram displayed)
• Goes into standby with E3 and a few seconds later goes to function. (picture attached)
• Intermittent or no vertical linearity. (with circuit diagram extract)
• Hum in picture. Error disappears after approx10 mins operation.
• Vertical waves on both sides of picture. Unstable picture. (with circuit diagram extract)
• E/W adjustment. (SBR - 5621 information)
• No tuning, channel no etc. with the standby LED permanently on (sets with 1021 VST module).
• Sometimes when switched on set gives a squealing noise and no sound or vision. (+ extract of circuit diagram)
• The vertical lines are ribbed, especially in the test picture. (extract of circuit diagram attached) (SBR - 5621 information)
• "88" on the display. No picture. No sound. (picture attached)
• After about 7 days the vertical endstage IC TDA3650 blows again. All the voltages are ok. (part of circuit diagram displayed)
• Picture OK but display only shows signs.
• Output signal is occasionally O/C when shown on oscilloscope.
• Switches to standby (after start-up).
• 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)
• Hums and crackles. Sound comes from loudspeaker and chassis. Flashing LED.
• 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.
• Repeated failure of BU508A line output transistor. (part of circuit diagram displayed)
• Memory loss.
• Poor colour (when cold). (+ extract of circuit diagram)
• Whines loudly at switch on and will not start up. (with circuit diagram extract)
• Low audio. Distorted audio. (+ extract of circuit diagram)
• Safety test after repair.
• Peak white bright band approx. 4" across screen. Then set dead. (with circuit diagram extract)
• Switches on, but no EHT available. Channel number disappears and then "E1" is displayed.
• The picture is much too wide, east/west does not control. (picture attached)
• Failure of field output chip TDA3650. (extract of circuit diagram attached) (5621 SBR repair tip)
• No red. (part of circuit diagram displayed) (5621 tips)
• EHT arcing.
• No raster. Audio OK . (part of circuit diagram displayed)
• Test picture visible in the background in TXT mode. (extract of circuit diagram attached)
• Brightness and or contrast don't work or don't work properly.
• 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.
• The line end stage transistor 7162 heats up. The base and collector pulses are ok, the transistor blows. (+ extract of circuit diagram) (service info for SBR -5621)
• The sound goes erratically to max. volume. (+ 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. (with circuit diagram extract) (5621 SBR repair tip)
• Poor closure of function door.
• Fine horizontal lines on picture, particularly during channel switch-over. Occasionally vertical sync. does not fit in with screen.
• Poor RC sensitivity. (extract of circuit diagram attached)
• No function, stand-by connection has voltage.
• No line drive. (+ extract of circuit diagram)
• Switches to protection mode (intermittently). (with circuit diagram extract)
• On cable reception, stations cannot be tuned or the stations wander off.
• Blanking valency in picture (black bar in 3/4 of picture). (+ extract of circuit diagram)
• Changing channel. (extract of circuit diagram attached)
• No picture. Green and pink raster at the top. (extract of circuit diagram attached)
• Appliance fails. BU508A will become defective and displays E-3. Power supply squeaks. (+ extract of circuit diagram)
• Picture rolls. (picture attached)
• Field flyback lines visible for a second or so when channel changed. They then disappeared. (+ extract of circuit diagram)
• Herringbone pattern on raster. High channels are not accepted when tuned.
• TV picture slightly visible when in TXT mode. (picture attached)
• Muted audio. intermittently.
• Doesn't lock in on channels or stops but tuned off. (+ extract of circuit diagram)
• The appliance cuts out and E3 in the display then everything becomes normal again and after 30 secs the appliance cuts out again. (picture attached)
• Starts up gradually. (extract of circuit diagram attached)
• Power supply whistling and the BU508 is S/C. (picture attached)
• Intermittent loss of colour and picture sways. (picture attached)
• Cycles on/off.
• Mains switch and speech-music switch.
• Shakey picture. No sound on some channels. Appliance starts. (picture attached)
• No remote control operation on teletext version. (picture attached)
• Horizontal jitter. (+ extract of circuit diagram)
• Top of picture has non linear scan, ok when appliance has warmed up. (with circuit diagram extract)
• E/W fault. (with circuit diagram extract)
• Sometimes no vertical deflection; random cramping at top of picture. (part of circuit diagram displayed)
• No TXT. (with circuit diagram extract)
• Black streaky lines after a few mins. Completely dark picture after approx 5 mins. (with circuit diagram extract)
• TXT lines at top of picture. (+ extract of circuit diagram)
• Searches for channels continuously. (with circuit diagram extract)
• High-voltage flash-over. (with circuit diagram extract)
• Picture collapses in RF every 2 seconds. Picture OK via scart.
• Faint white streaks above the picture. (part of circuit diagram displayed) (5621 tips)
• No start up, displays E3. No 13V. (part of circuit diagram displayed)
• In display all segments lit.
• Channel drifts briefly into UHF between approx channel 30 and 37.
• Rolling picture for 5 secs after switching from VHF to UHF. Poor raster synchronisation.
• E/W-error, trapezium distortion. (with circuit diagram extract)
• No start up. PSU goes to protection circuit. (picture attached)
• Predominance of one of the three colours (red, green or blue).
• Pincushion effect on vertical straight lines. (part of circuit diagram displayed)
• Vertical foldover at top. (part of circuit diagram displayed)
• No function, the 141V power supply voltage is only approx 80V. (+ extract of circuit diagram) (5621 SBR repair tip)
• Vertical line. (with circuit diagram extract)
• No function. No start up. (SOPS, IV-F-3). (picture attached)
• Dark screen. R3186 blows up. What is the value of R3186? (picture attached)
• Channels "up and down" only work on the RC.
• Squealing from PSU. (+ extract of circuit diagram)
• Intermittent loss of sound and vision, with just snow and no channel display. (extract of circuit diagram attached)
• Blanking of the raster, starting at bottom of the picture. (with circuit diagram extract) (5621 tips)
• Picture bounces in upper picture third if a poor signal is present at aerial input. Vertical lines twist. (+ extract of circuit diagram) (service info for SBR -5621)
• Teletext only shows "P100" flying all over the screen out of sync, or shows a teletext page out of sync.
• Very loud sound, not adjustable. No display.
• Blanking fails, lines run through and sound is . (+ extract of circuit diagram)
• Lines in picture. on the left. (picture attached)
• Vertical collapse. (part of circuit diagram displayed)
• Picture bends at top and vibrates. (+ extract of circuit diagram) (service info for SBR -5621)
• The picture is too small. The power supply is too weak. (part of circuit diagram displayed)
• After operating for 12-14 days, the line-BU blows. (with circuit diagram extract)
• Does not stop at S channels during station search. Appliance should be suited to do so.
• East/west correction is defective or the power supply gurgles. (+ extract of circuit diagram)
• Poor focus. (extract of circuit diagram attached)
• No picture. Loud fizzling noise from line deflection. (extract of circuit diagram attached)
• Blank screen (intermittently). (with circuit diagram extract)
• PSU hiccups.
• K9/K11 band switch.
• Poor picture. (part of circuit diagram displayed)
• No synchronisation. intermittently. Picture shakes. (with circuit diagram extract)
• Dead (intermittently). Squealing from PSU. (with circuit diagram extract)
• Vertical blanking interval still visible in picture after program switch over. (extract of circuit diagram attached)
• Screen compressed at the bottom and very quick vertical drift of picture. (+ extract of circuit diagram)
• Blows components (intermittently). (picture attached) (5621 tip from SBR)
• Line pulling/frame jitter. (part of circuit diagram displayed)
• TXT-replacement.(4822 212 21008T). (part of circuit diagram displayed)
• Erratic functions. (extract of circuit diagram attached)
• Flyback lines. at top. (part of circuit diagram displayed)
• Red picture (intermittently). (extract of circuit diagram attached) (5621 SBR repair tip)
• Too much brilliance of one cathode of picture tube. (5621 tips)