566002 / SBR [TV 56 (52) cm picture]

• Black lines in picture.
• Comes on in standby. When switching to a channel, picture and sound start up correctly but appliance switches again to standby after approx 30 secs.
• Vertical output IC7570 (TDA3654Q) breaks frequently. (picture attached)
• Raster cramped at the bottom and stretched at the top (+ extract of circuit diagram)
• Width flutter.
• Crackling audio. intermittently. Line tearing. (with circuit diagram extract)
• Line osc. not running only buzzing noise.
• Vertical foldover.
• Switches on by itself. intermittently.
• Bars in picture. (with circuit diagram extract)
• Dead except F3 in OSD.
• Text displaced. (part of circuit diagram displayed)
• When switching the appliance on it starts after a few attempts (standby LED flickers) and stops (LED off). If the appliance is switched on again the same happens.
• No LED lit.
• Intermittent shut down of the PSU. (picture attached)
• The appliance can no longer be operated (picture attached)
• PSU whistles. (extract of circuit diagram attached)
• No raster. intermittently.
• Tuning varies at a fixed rhythm as if AFC does not latch.
• Tuning erratic after changing battery.
• Faint pattern of vertical lines about a quarter of an inch apart across the screen and occasional corrupt teletext.
• Top of picture shifts.
• Converting Pal/Secam.
• Negative picture.
• Line hooking on new pre-recorded tapes with the macro vision anti copying signal.
• Picture appears after a certain amount of time.
• F0 in the display, PSU does not function.
• The remote control commands are not received but operating the appliance manually does function. (extract of circuit diagram attached)
• Jumping and line tearing, varies according to content. (with circuit diagram extract)
• Varying 140V ht line. (picture attached)
• No RC functions. (picture attached) (566002 tip from SBR)
• During TXT, faint vertical lines and corrupt text on screen. (566002 SBR repair tip)
• Enter service mode.
• Appliance is dead with line whistle.
• Intermittently collapses.
• Green spot.
• Egg-shaped picture. (part of circuit diagram displayed)
• Standby LED does not light.
• Set not tuning right, battery ok.
• Intermittent squealing from line stage at switch on.
• Station search scan stops at a point near the station tuning point, but not at the exact tuning point.
• Line output transistor S/C. (+ extract of circuit diagram)
• Field IC repeatedly fails. (with circuit diagram extract)
• Display flickers. Shuts down. (+ extract of circuit diagram)
• No tuning. (part of circuit diagram displayed)
• HT and EHT come up for an instant at switch on then main HT drops to a steady 30V.
• No synchronisation. intermittently.
• BU508V keeps blowing. C2618, 2609, D6609, TS7630 and line transformer. (part of circuit diagram displayed)
• No picture. (+ extract of circuit diagram)
• No results but 140V and 19V primary voltages are ok. Collector of IC7535 reads 0V.
• Tuner drift on non remote sets.
• Fuse 1651 blown. (part of circuit diagram displayed)
• Field collapse every few days intermittently. (extract of circuit diagram attached) (566002 tips)
• Moire effect.
• SOPS radiation. (picture attached)
• Lines in picture.
• Moire pattern. (picture attached)
• No function. Mains power switches on and off with whistling tone.
• Memory loss. after start-up. (with circuit diagram extract)
• Dead. Line output transistor and regulator S/C.
• BU508 cuts out after playing approx. 5 minutes. (with circuit diagram extract)
• No functions.
• New channels cannot be installed.
• Cannot switch to install menu.
• Replaced power regulator which cured fault. After replacing the PCB it went S/C again.
• The functions brightness, colour and sound do not work but the display is ok (part of circuit diagram displayed)
• Buzz in audio.
• No start-up. (part of circuit diagram displayed)
• When the TV is switched on it is completely dark, there is no sound and only the display circuit functions.
• Cycles on/off. Flashing display.
• Unstable picture from video recorder. (+ extract of circuit diagram) (566002 tip from SBR)
• Insufficient height with cramping and centre crossover distortion. (part of circuit diagram displayed)
• Set goes off after 20 minutes. (part of circuit diagram displayed)
• Responds to the RC only from 2-3cm. RC OK.
• 2A mains fuse blown, BUT11A chopper transistor T7686 s/c. D664 (BYD33J) also faulty. (with circuit diagram extract)
• BU508 repeatedly defective after few seconds.
• Defective geometry. Raster appears narrow at the bottom and lengthened at the top part. (picture attached)
• Vertical collapse. at bottom.
• Flashing display. (with circuit diagram extract)
• Bright picture. Retrace lines.
• Blurry picture. (part of circuit diagram displayed)
• Coloured spots on flat square picture tubes. (566002 tip from SBR)
• Field jitter/foldover.
• PSU pulsates. (566002 tip from SBR)
• No signals, no display.
• Black screen. 'F3' appears on display.
• Ringing in picture.
• After a few minutes line ripple appears, followed by fading picture and sound. (566002 tips)
• Sound was modulated at random by squawks and squeaks. (+ extract of circuit diagram)
• No light though sound is fine. (extract of circuit diagram attached)
• Black screen. Line whistling.
• Poor vertical synchronisation. Horizontal jitter. intermittently.
• Poor picture because the appliance continues searching for channels. A good synch. pulse is not present on pin 28 of the tuner.
• Line output transistor destroyed.
• Flyback lines in 1 colour during dark scenes. (part of circuit diagram displayed)
• Flyback lines. at top.
• Vertical pattern over the whole screen. (with circuit diagram extract)
• Occasionally no sound and no picture. Black screen and E5 on display. Starts up again when pressing programme +.
• 140V goes high.
• Squealing noise. at start-up. (566002 SBR repair tip)
• BUT11A blows intermittently.
• Repeated failure of line O/P transistor. (picture attached)
• Power supply trips out (over volt condition).
• Thick black bar at bottom of picture. Seems like foldover.
• Changing the vertical deflection-IC TDA3654.
• Faulty TXT.
• Bright raster. Flyback lines. (picture attached)
• Poor picture. Low contrast. (+ extract of circuit diagram) (service info for SBR -566002)
• Stripes in picture.
• Barrel effect.
• 140V voltage is 120V. Stand-by and EXT1 LEDs are on. (with circuit diagram extract) (566002 tip from SBR)
• BU508 blown repeatedly.
• Tuning drifts. Memory loss.
• Snow in picture. Flyback lines.
• No tuning. only on certain channels.
• Sometimes the appliance fails and a white line appears.
• Noise in audio. Picture OK . (566002 tips)
• EHT does not start up.
• Dull screen, no image.
• Corrections to service manual.
• Back up battery has a higher failure rate. (with circuit diagram extract)
• Loss of remote control. Latch up. (picture attached)
• No contrast control. (extract of circuit diagram attached)
• Vertical jitter. at bottom. (extract of circuit diagram attached)
• Reducing pick-up from PSU and limiting leakage from T7687.
• No HT recovered when H scan plug disconnected.
• Faint pattern of vertical lines approx 0.25" apart across screen and corrupt TXT intermittently.
• No vertical deflection.
• No start up. Noise from PSU.
• Horizontal grey line superimposed on it.
• Several attempts to start up (standby LED flashing) then no function (LED off). When switched on again, same fault occurs. (extract of circuit diagram attached)
• No start-up from standby. No RC functions.
• No operation.
• Code number for coil S5601.
• At switch on, intermittent squealing from line stage.
• Switches to standby. after a few minutes.
• Tripping. (with circuit diagram extract)
• Distorted picture.
• After switching on the TV and changing channels sometimes the channels are present and sometimes they are out of tune.
• No synchronisation.
• Dead or intermittently dead.
• Picture vertical tearing. Vertical foldover at lower part of frame.
• Dead. No standby light or channel indicators on. Mains fuse O/C. (part of circuit diagram displayed)
• Sometimes the selected channels for each station are not stored in memory.
• Poor synchronisation. (picture attached) (566002 tip from SBR)
• Flyback frame.
• After operating normally for a short time the raster disappears on the TV and F3 appears in the display. (with circuit diagram extract) (service info for SBR -566002)
• To switch on "Protection Mode" flat square picture tube.
• Poor E/W.
• Intermittent standby. Mute LED flickering. (566002 tips)
• Tripped.
• Coil shaped picture. Can be adjusted to straight picture but remains too narrow.
• Power supply tripping, whistling, arcing sound from scan yoke assembly, possibly some smoke from main PCB. (with circuit diagram extract)
• Smearing in picture. after start-up. Flyback lines.
• Stuck in standby. Buzz coming from appliance.
• Ticking noise. in standby. (picture attached)
• Field instability. (extract of circuit diagram attached)
• BUT11 chopper transistor S/C collector-to-base. (with circuit diagram extract)
• Intermittent net curtain effect. (566002 SBR repair tip)
• Enable Hotel mode. Disable hotel mode.
• No picture. on upper half screen.
• Picture too small below. The entire picture is shifted down.
• Incorrect frame. (with circuit diagram extract)
• The appliance does not switch on. F3 appears on the display.
• Very intermittently the standby and mute LEDs flash and channel display goes off. (part of circuit diagram displayed)
• Trips. (extract of circuit diagram attached) (566002 SBR repair tip)
• Unstable picture. (part of circuit diagram displayed)
• Skips channels during tuning.
• Tunes incorrectly. (picture attached)
• Looks like tuner, noise only. (SBR - 566002 information)
• Black screen. Intermittent loss of scanning raster. (service info for SBR -566002)
• Lines in picture. intermittently.
• Dead except line whistle.
• BUT12A blows after a few weeks. (SBR - 566002 information)
• Faulty raster.
• Difficult start up. If it starts up, picture can be distorted vertically and no functions via RC or front panel.
• Fuse 1601 blows at start up. Power supply transformer makes a whistling noise. T7599 ok. C2608 and zener 6604 OK. Line transformer ok. Line BU OK.
• Switches to standby. depending on picture content. (566002 SBR repair tip)
• The back-up IC blows always although the appliance is turned off. (+ extract of circuit diagram) (566002 tips)
• Ruffled picture as if HT leaking. (part of circuit diagram displayed)
• No picture, no sound, there is a slight voltage present. The stand-by LED light up. (with circuit diagram extract)
• HT is low, 25V instead of 140V. (picture attached)
• Vertical output IC intermittently defective with possible patterning in picture.
• Line output transistor fails repeatedly. (with circuit diagram extract) (566002 tip from SBR)
• Working voltage +140V goes under 80V.
• Line tearing. Poor vertical synchronisation.
• No picture. No audio. LED blinks .
• Intermittently line output transformer blows.
• Tripping (intermittently). (picture attached)
• Switches to standby.
• Excessive horizontal size. (part of circuit diagram displayed)
• 3cm on the lower picture edge are black. When centered vertically, the line will not move. (part of circuit diagram displayed)
• Vertical collapse (intermittently).
• Unstable, rolling picture with intermittent line pairing when changing scenes. (with circuit diagram extract)
• Picture bends in at the sides, variable with brightness. (extract of circuit diagram attached)
• Excessive brightness. Flyback lines.
• Safety test after repair.
• Failure of IC7570 (TDA3653A "90" or TDA3654 "110") (with circuit diagram extract)
• No sound on P1. Blank raster. (part of circuit diagram displayed)
• To improve reliability of SAB3037.
• Line whistling when hot.
• Dark picture.
• Intermittent loss/predominance of one of the three primary colours (R, G or B).
• Ragged verticals. (with circuit diagram extract)
• Some channels alternate between good picture and snow. OK on scart input.
• Lines in picture. at top . (with circuit diagram extract)
• Erratic tuning. (566002 tips)
• E/W fault. (extract of circuit diagram attached)
• No start-up. intermittently. (picture attached)
• After flashover of picture tube, set is in protection mode. Set works again after turning on and off. (part of circuit diagram displayed)
• BUT11AF S/C. Fuse blown. (part of circuit diagram displayed)
• No picture on half inch at left.
• Over-voltage circuit active. (with circuit diagram extract)
• Blank raster. Audio OK . (extract of circuit diagram attached)
• Cannot be reprogrammed
• When first switched on intermittent squealing from line timebase.
• Flashing picture. Flashing display.
• Picture becomes dark. After cooling down picture is ok again.
• Destroying chopper transistor and bridge every few weeks. (extract of circuit diagram attached)
• Pattern on screen.
• Unusual channel selector fault, as though the memory is useless.
• Cracking noises from set when first switched on from cold, causing loss of memory settings for the brightness. Then set dead. (extract of circuit diagram attached)
• The CTV does not switch on. 2A fuse blows. Power supply circuit is ok.
• Torn picture. Noise in audio.
• No demagnetization, no voltage, after 2-3 secs fails again.
• No start-up. when cold.
• Chopper S/C. (part of circuit diagram displayed)
• Excessive horizontal size. Pincushion distortion. on sides.
• No horizontal deflection.
• Squealing noise. (extract of circuit diagram attached)
• No picture, no sound, LED flickers and throbs severely when appliance cold or when programme changed.
• After playing for a short time TS7618 (BU508V) blows.
• White screen with black line.
• No tuning, no change in tuning voltage when search tuning initiated, but front display shows the correct channel number. (part of circuit diagram displayed)
• Ragged verticals and line output transformer sings.
• Dead, mains bridge blown up.
• Low HV.
• Incorrect code number Pos. 7618.
• Field jitter, verticals ragged and pulling at switch on. (part of circuit diagram displayed)
• No TXT.
• Contrast control inoperative on IC7300, PN7 not varying. (+ extract of circuit diagram)
• Vertical streaks. intermittently.
• No picture. Wavy raster and display flickering. (service info for SBR -566002)
• Picture looks like a mosaic.
• Cracking noises from set, causing loss of memory settings. (with circuit diagram extract)
• Focus potentiometer replacement.
• Vertical bars in left picture side.
• White raster with flyback lines, trips after 20 seconds. (with circuit diagram extract)
• Picture is dark, sound is weak, no colour. Channels are erased.
• Intermittent loss of sound and vision with a buzzing noise coming from the power supply. (picture attached)
• Intermittently dead.
• Power supply is slow to start. (picture attached)
• Stand-by LED is on, but the set does not go to stand-by mode. (extract of circuit diagram attached) (service info for SBR -566002)
• Loss of memory when set switched off. (extract of circuit diagram attached)
• Power supply collapses. (566002 SBR repair tip)
• No shutdown with RC.
• Deguass/dead/ht shuts down after 2-3 seconds.
• No signal. intermittently.
• Blowing mains input fuse. (part of circuit diagram displayed)
• Vertical output stage drops out.
• Switches to standby after approx. 1min., OK again after switch on, then switches off again.
• Does not tune. Right channel number in display. (extract of circuit diagram attached)
• PSU chirps.
• No picture. Audio and OSD OK .
• Dark screen. (+ extract of circuit diagram)
• Line stage whistles when warm.
• Colours rolling. (566002 SBR repair tip)
• No vertical deflection. Picture is reduced to a line which is approx 1cm wide with the bottom part rolled up. (part of circuit diagram displayed)
• No vertical deflection. intermittently.
• Vertical collapse. (extract of circuit diagram attached)
• Unnatural colours.
• No scanning, the line transformer is ok, fuse 1601 blows at start up. Even if the transformer is disconnected, the power supply starts up. Voltages are ok.
• Very defective vertical sync and occasionally also horizontal vibration.
• No picture. When you switch off the appliance a horizontal line appears for a moment.
• The CTV does not switch on. The 2A fuses are o/c; after replacing them they keep blowing.
• Within 10 seconds the power supply only produces 80V, and is then fine. OK in when warm. (extract of circuit diagram attached) (566002 tips)
• Unstable and oscillating audio. (picture attached)
• Intermittent line transistor goes short.
• Appliance quits, no picture, no sound, no display and power supply whistles. Raster possibly too large. (extract of circuit diagram attached)
• No E/W correction.
• When put in standby it buzzes and won't come out.
• Vertical foldover at top. (picture attached)
• Stand-by LED flashes or lights up spontaneously.
• Safety resistor R3601 goes defective after switch on and then the power supply whistles. (+ extract of circuit diagram)
• Picture shifted upwards.
• Connection of a loop system to the TV.
• No start up. Pumping noise.
• Uncentered picture. (picture attached)
• Bright raster. Flyback lines. Fault occurs intermittently. . (picture attached)
• Switches to protection mode. after start-up. (566002 SBR repair tip)
• Vertical deflection defective and E/W fault.
• Does not switch to standby. (picture attached)
• RGB is not working correctly. Poor colours. (+ extract of circuit diagram)
• Power supply dead. Checks shows that there is .6V at the base of the BUT11AF chopper transistor and over 300V at its collector but the circuit won't oscillate. (with circuit diagram extract)
• BUT11 fails.
• The display does not function (commands brightness, colour and sound). (extract of circuit diagram attached) (566002 tips)
• No brightness. No audio. (+ extract of circuit diagram)
• Raster IC defective after 2 weeks. IC fails occasionally after connecting aerial. (extract of circuit diagram attached)
• Frame cramp at top. (picture attached)
• Vertical shaking. intermittently.
• Pincushion distortion. No E/W correction.
• Power supply hiccups and LED flashes.
• Fluctuating picture both horizontally and vertically with increased volume. Picture is fine at low volume. (picture attached)
• Memory loss. (+ extract of circuit diagram)
• Hum bar going down screen.
• Mains fuse and transistor BUT11 fail once a week.
• Converting pal/secam in the Middle East and Morocco.
• Channel tuning information does not store. (picture attached)
• Intermittent loss of channel memory and parameters previously selected by the user.
• Fine lines on picture.
• No TXT (intermittently).
• Main fuse is burnt. S/C in chopper transistor T7686 (BUT11A). D664 (BYD33J) is also defective.
• No picture and no sound. F3 in display.
• Whistling.
• Picture appears slowly. Blurry picture. Audio OK . (service info for SBR -566002)
• Appliance buzzes when put into standby, and won't come out of standby after chopper replaced. (extract of circuit diagram attached)
• Frame problem at bottom of screen.
• Error codes. (extract of circuit diagram attached)
• Test pattern is egg-shaped.
• Zebra-striped vertical lines. Picture is a bit oversized.
• Colour decoder Pal-Secam.
• TV blocked. E1 on display, no volume control. Sometimes it starts up correctly for a few mins then switches back to E1. This happens with scart unplugged. (part of circuit diagram displayed)
• In position TXT, F2 on display.
• Dark screen. Audio OK .
• Interference C.G. bar in picture on channel 2. (with circuit diagram extract)
• Lines on picture, different brightness between lines and the lines move about.
• Incorrect frame deflection.
• If TDA3651 or TDA3652 are used as vertical output stage, TDA3653AQ can also be used for 90° picture tubes in case of repair. TDA3654Q can be used for 110° picture tubes. Following changes must be carried out.
• Poor vertical linearity. (part of circuit diagram displayed)
• Trips quickly.
• Line pairing.
• Field jitter. After field IC has been replaced there is field foldover. (+ extract of circuit diagram)
• The field output transistor overheats and scanning is distorted after 5 minutes.
• Dark picture. TV starts. Horizontal stripe appears when voltage on G2 is increased
• Stuck in standby.
• Cannot switch to 'Installation' menu. "DESACT" displayed.
• When warm, switches off completely or hiccups in the PSU.
• Appliance is dead, PSU whistles.
• No start-up from standby with RC. Trips. (+ extract of circuit diagram)
• Low contrast after Q201 and TA7698 have been replaced.
• Black screen. PSU whistles.
• The appliance functions intermittently, and the clock starts flashing.
• Black lines in the picture, especially on brightness and text picture.
• No picture, no sound and the line transformer howls. (part of circuit diagram displayed)
• Diode 6663 goes defective after playing for 2 hours. (picture attached)
• Cuts out on bright scenes.
• No start-up. Standby LED flashes .
• Poor frame amplitude with sudden frame movements.
• Menu reactivation.
• When set is cold, goes into standby mode but the LED flickers. When set warm it still goes into standby but won't come out. Power supply buzzes loudly and the LED's flicker rate is faster. (+ extract of circuit diagram)
• Squeaking from EHT stage when cold.
• Severe patterning. (extract of circuit diagram attached) (service info for SBR -566002)
• How to enter channel adjustment menu.
• Appliance does not function, squeaking sound when turned on.
• No figures on display.
• After switching on the TV there is a loud background noise. Normal picture.
• Reduced horizontal size. (+ extract of circuit diagram)
• Black lines on the picture -it looks as though every other line of picture content is missing.
• Low brightness with severe Hanover bars.
• Dead. (+ extract of circuit diagram)
• Slow start-up.
• Picture jumps at channel switch over.
• Interference of fine parallel grid lines.
• High contrast. No contrast control.
• 140V voltage supply varies. (with circuit diagram extract)
• Whistling. at start-up. (+ extract of circuit diagram) (service info for SBR -566002)
• Striations.
• No green.
• No picture. Audio OK . (with circuit diagram extract)
• Smeary, broken colours at left hand side plus too much saturation. (part of circuit diagram displayed)