333657 / SBR [TV]

• On stand-by command from RC, the TV does not switch off completely, the image remains with a very poor contrast. (333657 SBR repair tip)
• Connection of a loop system to the TV.
• No TXT. Picture OK .
• Picture shakes. depending on picture content. (extract of circuit diagram attached)
• Predominance of green on grey scale. (+ extract of circuit diagram)
• No picture, no sound or picture jumps. Power quits with approx. ca. 60V (via regulator transformer). (extract of circuit diagram attached)
• No front panel function. RC OK.
• No function, the power supply gurgles and whistles. (333657 tip from SBR)
• Picture and sound cut out when warm. Crispening and Standby LEDs flashing.
• No colour. Audio OK . (picture attached)
• Playback of CDV via RGB causes picture shift.
• The appliance does not carry out any function and there is a low noise from the power supply unit. (picture attached)
• No reception on UHF and VHF, only snow. All voltages on selector are fine. Picture appears after switching the system, then UHF and VHF are fine. After changing channels, goes defective again.
• After replacing the IC 7900 X2404P lack of picture width and height.
• No E/W correction.
• Power supply ia shut down but ok as it works with dummy load. (extract of circuit diagram attached)
• No luminance. (extract of circuit diagram attached) (333657 tips)
• Dark bars on left side of screen.
• Frizzy picture and white vertical lines, only on Canal Plus.
• No AV input selection.
• White picture in TV mode. No Sound in AV mode. Other functions OK.
• Spare part information.
• No picture, only snow. after warm-up. (with circuit diagram extract)
• Control does not function well. (extract of circuit diagram attached) (333657 tips)
• "ON" and "CRISP" LEDs flicker simultaneously.
• BUT12A chopper transformers short circuit. (SBR - 333657 information)
• Picture signal cuts out when aerial signal is too weak.
• Barrel-shaped distortion. After adjusting with RC same problem reoccurs 3 to 4 weeks later. (part of circuit diagram displayed)
• Takes a long time to warm up ie picture appears after a long time. (part of circuit diagram displayed)
• When warm, inverted picture. Correct sound. (with circuit diagram extract)
• Chassis 3A. Standby LED and 'CRISP' LED flashing. (+ extract of circuit diagram)
• EEPROM in CHASSIS 3A (4822 209 71848).
• During stand-by mode the power supply hums. (picture attached)
• Low horizontal amplitude after prot. disabled by open circuit 6560.
• Cannot switch to SECAM, all channels stay in PAL.
• Sound mutes intermittently. Green LED (ON + stereo) blinks.
• No reception of the TV in VHF. No colour or sound. (picture attached)
• Picture flashes red. intermittently.
• Picture folds over in upper section at VCR operation via scart socket. Time constant fault.
• First and second channel are snowy, the others are clear but shifted in frequency. (extract of circuit diagram attached)
• Appliance sometimes drifts off channel 45+ momentarily and comes back on its own.
• Cramping on sides, at top and bottom. No reception via tuner and scart. Snow on screen.
• Poor synchronisation. when changing channels.
• On switch off, the back-up IC blows.
• Gets stuck in stand by. Can only be started again by the mains switch. Gabbles with very high volumes.
• Safety test after repair.
• No picture. No sound. Raster appears for 1 sec at switch off. (service info for SBR -333657)
• TS7687 fails again.
• In 33" appliances fuse 1642 is defective. (picture attached)
• On most channels wavy picture vertically. Looks like the channel is not tuned in properly. Possible arcing of the high voltage.
• Dead. (extract of circuit diagram attached)
• No start-up. (with circuit diagram extract)
• Crackling audio. intermittently. (part of circuit diagram displayed)
• Picture only appears on the screen after warming up for a long time (on older picture tubes).
• Lines flashing on picture and on text.
• Channels shifted except for band I.
• The picture is distorted after some time and produces a whistling noise. (part of circuit diagram displayed)
• No function. The power supply jumps with a whistling sound.
• Picture shifts in frequency, randomly returns then disappears again without any logic after 15 mins.
• Tuning unstable.
• Power supply unit repair.
• Picture lights up once per day. Sound fails, picture is fine afterwards. After switching off the appliance the sound is good again.
• E/W fault. No E/W correction. (extract of circuit diagram attached)
• Standby LED and crispening LED both flash. (part of circuit diagram displayed)
• Starts up after minimum 30 secs of the CRT lighting up. (extract of circuit diagram attached) (SBR - 333657 information)
• No picture, will appear via OSD EXT1 or TV. (+ extract of circuit diagram)
• No audio. in NICAM .
• No VHF channels. No colour. Sound is distorted. System select switch does not function.
• Memory loss. (extract of circuit diagram attached)
• Interference on channel 5.
• Does not change channels. Volume uncontrollable. Other functions OK .
• No picture adjustments. Audio settings OK.
• Capacitor 2618 blows towards FBT.
• Bright raster. Retrace lines.
• No picture. No sound. Line transformer does not function. (+ extract of circuit diagram)
• At start up normal sound. Picture appears after 4 mins. Normal picture. (picture attached)
• No sound, picture OK. Sound OK via headphones. (with circuit diagram extract) (service info for SBR -333657)
• Poor brightness. When warm frame has a red cast and brightness increases gradually. (333657 SBR repair tip)
• No picture. OK via SCART .
• No picture in the first 5 minutes, only sound. Picture tube lights, EHS-raster functions.
• Picture remains dark for a moment at switch on.
• Tuning drifts. (service info for SBR -333657)
• Starts but stereo light flickers. No picture. (picture attached)
• Low audio. Distorted audio. (333657 tip from SBR)
• Microprocessor IC7830/7831 3A receiver.
• Picture width reacts to brightness.
• After replacement of X2404P (back-up-IC) the TXT does not work. (SBR - 333657 information)
• No channels stored via automatic channel search from channel 60 upwards.
• No picture and focus pot unstable. Little brightness on screen, if G2 is increased and focus set to max. Orange indicator on front panel flashes on and off. (with circuit diagram extract)
• No vertical deflection.
• No sound from speakers. Ok via headphones. Voltages ok, mute signal on pin 1 works.
• No picture. Picture appears after approx 10mins. Sound available at start-up.
• TV picture often appears after on for 10 minutes, sound is present.
• Appliance sometimes does not start, often only starts the second time around. Everything is fine from stand-by. (extract of circuit diagram attached)
• No TXT.
• Documentation IV-H-16 (3A 100HZ) discrepancy.
• No tuning, no colour and interference on certain channels.
• Dark picture varies with content, better when hot. (extract of circuit diagram attached)
• Vert jitter on some prerecorded tapes (guard band)
• Picture very wavy in the vertical direction. Sizzling noise from the power supply part.
• Dead. No LEDs.
• Hum in audio. via speakers. (333657 tips)
• Blocked on EXT4 and cannot go into standby or adjustment mode with RC. If pressing EXT key picture reappears then disappears immediately. (with circuit diagram extract)
• No 9V. (part of circuit diagram displayed)
• Adjustments with the service function. (333657 SBR repair tip)
• In VHF frequencies only noise.
• Memory loss Earom X2404.
• Poor locking in audio search.
• The appliance does not start up. On the variac increases to 100V and as soon as the EHT starts up it fails. No apparent s/c. (part of circuit diagram displayed)
• Loses memory, brightness, colour and contrast.
• TV blocked in PAL.
• East/West does not adjust in maintenance. (with circuit diagram extract)
• No picture. FBT ok. Two green LEDs flash on and off on front panel. (+ extract of circuit diagram)
• The picture cuts out. A red stripe appears. (with circuit diagram extract)
• Tube start-up improvement.
• No picture. Audio OK . Switches to protection mode. after a few seconds. (extract of circuit diagram attached) (SBR - 333657 information)
• No tuning.
• Shuts down. after a few seconds. No LED lit. (SBR - 333657 information)
• At switch on, large purple bands for 40 secs. Fault in chroma board.
• Set blocks. (+ extract of circuit diagram)
• Blurred picture and noise in tube or deflector. Picture is slightly distorted.
• After removing the chassis, no BUS I2C, spatial light flashes.
• SOPS transformer rattles in standby mode.
• Picture becomes dark (shadow) from left to the right. Thin, black, horizontal stripes in the entire picture. knock sensitive. (service info for SBR -333657)
• Power supply runs high and is uncontrollable. (with circuit diagram extract)
• Small wrinkle in top of the picture, Picture size varies with light and dark. (+ extract of circuit diagram)
• Picture distortion. The picture is round (barrel shaped). (+ extract of circuit diagram)
• No picture. No sound. Operating LED lights up and LED for the stereo sound effect flashes slowly. (extract of circuit diagram attached)
• Stuck in standby.
• Brief loss of picture and sound. (+ extract of circuit diagram)
• In safety mode. Green and red lights flash. (+ extract of circuit diagram)
• Picture's geometry is distorted in function of high brightness parts.
• Intermittently skips to preselection 1. (part of circuit diagram displayed)
• Dark picture. Colour bleeding. No luminance. (extract of circuit diagram attached)
• Colour impurity.
• The picture jumps intermittently after pre-selection. (part of circuit diagram displayed)
• Geometry faults. (extract of circuit diagram attached)
• No function. Standby and Crispening LED flash at the same time.
• Distorted picture. No teletext, or picture oscillates when video recorder SCART is connected, as if the colour TV was not made to accommodate a video. (part of circuit diagram displayed)
• Switches to protection mode. at start-up.
• Appliance gets too hot after replacement of sound module (sound power amplifier).
• No picture. TXT OK . (+ extract of circuit diagram)
• At switch on green light near switch lights up for 10 secs then goes out and the LED immediately beside it starts flashing. At switch off light on tube for a short time. (part of circuit diagram displayed)
• Black horizontal bars in the picture.
• Differences related to resistors R3638 and R3639.
• Interference in picture. (333657 tip from SBR)
• T7618 (BU) blows spontaneously after a few weeks.
• Half picture and bright white flyback lines during warm up. Normal picture shows 2 light blue flyback lines, followed by 2 red and 2 green ones. (with circuit diagram extract)
• Hum in standby.
• Crackling noise from PSU. (333657 tip from SBR)
• Squealing from PSU. (+ extract of circuit diagram)
• No start up by the RC. Normal start up by the On/Off switch. Red and green lights flash. (333657 SBR repair tip)
• Teletext faults. Characters are wrong.
• No or poor tuning with some channels. (+ extract of circuit diagram)
• Power supply heats up. Ticking sound from line output transformer. (333657 tip from SBR)
• Over-voltage circuit active. (with circuit diagram extract)
• Chassis 3A adjustments.
• Sound cuts out intermittently, then tuning doesn't lock.
• Micro processor 3A monitor /WO47/WO64.
• Difficulty in producing 35V HT.
• Blows R3621 (22K with a 27" CRT) repeatedly.
• Blue, red or green glows with flyback lines. (picture attached) (333657 tips)
• Poor picture synchronisation. Lines in picture when cold. (333657 tip from SBR)
• Fine patterning on screen at switch on, only with RAI 1 (Italian channel).
• Colour purity problem.
• Error codes.
• White picture with flyback lines then switches to protection mode. (+ extract of circuit diagram)
• When IF-module is defective it's not always necessary to replace the module, replacing the TDA4429 is often enough.
• Noise in picture. (extract of circuit diagram attached)
• BUT 12 blows up.
• Distorted picture. Picture rolls but is correct in SERVICE mode. No TXT (picture attached)
• Does not function in band 1 CH04. Ok in VHF B3P/B3I and UHF. (+ extract of circuit diagram)
• Clicking in loudspeakers when put into standby and impossible to start up again - goes into safety mode. Otherwise all functions ok when switched on with ON\OFF switch. (with circuit diagram extract) (333657 SBR repair tip)
• Remains in PAL.
• Video fault especially when cold. Chroma present, picture saturated without contrast. (part of circuit diagram displayed)
• No Canal Plus on channel 03. Channel display has shifted, i.e. channel 41 is tuned in but it displays channel 32 instead.
• Option adjustment. NR12 01 adjustment.
• Picture becomes brighter after operation.
• Black screen. when cold.
• Low HV. (+ extract of circuit diagram)
• No OSD. TXT OK .
• Coloured spots on flat square picture tubes.
• Picture is not very bright and colour smears.
• No function, no display indication. The supply voltages are only at half of the value.
• Dead or lines in the upper part of the screen. (part of circuit diagram displayed)
• No power and rail voltage 19V only.
• Change to Video Mute Circuit. (333657 SBR repair tip)
• When the appliance is set to stand-by after playing for about 3 hours, it switches on and off continuously and the red and green LED's also. (picture attached)
• Correct sound in the earphones but weak in the speakers.
• Appliance functions very seldom. 140V = 60V. 140V is present when line stage is decoupled.
• Switches to protection mode. (extract of circuit diagram attached)
• Red standby light and green LED flash when switching from standby to ON with RC in cold conditions. Everything functions OK when switched on with mains switch. No problems when appliance is warm. (with circuit diagram extract)
• No picture. Audio OK . (with circuit diagram extract)
• Dead. Creak from PSU.
• Wavelike picture tearing in horizontal direction.
• No green colour information.
• No raster, the output voltage on pin 20 of IC7571 is too high. (+ extract of circuit diagram)
• Switches to standby.
• No HT regulation and power supply transformer heats up when secondary voltages are lower than normal. (extract of circuit diagram attached)
• Spontaneous operation (after a few weeks) in the wrong option mode (white picture, no teletext, no VHS).
• Display jumps from channel to channel. (333657 tip from SBR)
• Vertical jitter. (picture attached)
• In teletext reception with the chassis 3A decoder board, the "E" becomes "#".
• Dark screen. LED blinks . (+ extract of circuit diagram)
• Character error.
• No start up from stand by, particularly when cold. Restarts when LF module unplugged. Sound ok.
• No 140 V. (picture attached)
• Horizontal line moving from picture centre upwards. After longer operation, picture appears slowly, then completely.
• Cannot tune VHF channels. Colour and sound missing.
• Pincushion distortion.
• Dark screen at switch on, sound is normal. After 3 mins signal appears as well as the picture on the screen.
• Picture size varies with picture content.
• Green LED light up for a short time after start-up.
• No picture. No audio. intermittently.
• No synchronisation.
• No TXT. No OSD. No clock display.
• Dead. Channel indicator OK.
• No functions. Switches to standby. after start-up. (+ extract of circuit diagram)
• No RC functions. RC OK.
• Very powerful whistling in standby and with TV on but less powerful when warm. (333657 tip from SBR)
• Appliance hums in stand-by mode. (part of circuit diagram displayed) (333657 SBR repair tip)
• Power supply of LF amplifier TDA1514 and loudspeaker output.
• The appliance jumps intermittently after choosing a pre-selection. (picture attached)
• Irregular E/O correction. Fault persists.
• PSU in safety mode. (with circuit diagram extract)
• The power supply hums in standby mode.
• Horizontal bright band on picture. Appliance stops working after a few mins. (333657 tips)
• No OSD in scart. Goes into standby then into service mode. Changes channels with RC in CTV tuner and PAL.
• Protection mode activated. (extract of circuit diagram attached)
• Spare part information: frequent deterioration of ICs TDA1514.
• The appliance jumps from higher channels back to program 1.
• No sound. Possible fault on A/V panel. (extract of circuit diagram attached) (333657 tips)
• Hum in standby with HiFi models. (picture attached)
• Poor colour, intermittent B/W with green tint.
• Picture tube A78EBK02X03 no longer available.
• No picture synchronisation when a programme is chosen whose aerial signal is above 10mV.
• Does not retain the E/W adjustment in service mode. Adjustment ok.
• Green LED lights up briefly on front panel at switch on. Appliance does not start up.
• Automatic fine tuning sometimes fluctuates past the reception range.
• No start up when first switched on (directly out of the box). (extract of circuit diagram attached)
• No raster. after a while. No audio. (picture attached)
• Stand-by kit.
• No start-up. intermittently. (picture attached)
• Picture moves slowly upwards. Picture almost OK or dark lines at top when warm.
• Output transistor (BUT11A) shorts repeatedly. Whistling noise from P/S.
• Deprogramming, no sound and no picture or does not go on the correct channels. (service info for SBR -333657)
• Flag waving at high volume.
• No start-up from standby.
• Picture pulsates 0.5 a second. Picture via scart OK.
• No picture. No TXT. Audio OK . (picture attached)
• No display.
• Dead. Whistling from line output.
• No sound when cold and/or picture and sound flashing on and off every second. (333657 tip from SBR)
• No picture (intermittently).
• Occasionally green ON LED flickers and no function of RC or front panel. Everything ok when switching off then on again. (333657 SBR repair tip)
• Frequency lines vary. Jagged vertical lines on picture.
• Black line at the bottom or no raster. (picture attached)
• No functions. Standby LED flashes . (with circuit diagram extract)
• Frying noise coming from the power supply part. Picture very wavy vertically.
• Tries to start up. Chirping from PSU.
• Erratic functions.
• No VHF channels. (+ extract of circuit diagram)
• Reduced horizontal size. (extract of circuit diagram attached)
• Intermittently does not start up with RC. Ok with switch. When fault occurs standby and crispening LEDs flash.
• The appliance switches automatically to EXT2. (part of circuit diagram displayed)
• Power On LED lit. Spatial LED flashes slowly. No picture or no sound. (with circuit diagram extract)
• Picture appears slowly. (picture attached)
• Wavy picture on all channels but on program 1 the disturbance disappears after about 3 minutes.
• Distorted picture. (part of circuit diagram displayed)
• Picture appears slowly. Audio OK .
• Poor subtitles on channel 2. (+ extract of circuit diagram)
• After operating normally for a short time the TV goes from "Reception" to "Search".
• Mains is set to protective circuit, but operates with a 100W lamp. (with circuit diagram extract)
• Switches to protection mode. after start-up. (picture attached)
• Selection of programme sound.
• No functions. intermittently.
• The line frequency is unstable or the vertical lines are broken depending on the channels. (+ extract of circuit diagram)
• At switch on, no sound or picture. No standby light. No defective component. Slight clicking in the speakers at switch off. (+ extract of circuit diagram)
• When connecting a 3A-chassis to an audio amplifier, a humming sound is audible in the amp if the 3A-chassis is in "stand-by".
• No controls.
• Intermittent audio and picture. Intermittent audio and picture. (picture attached)
• Power supply is defective. No adjustment after repairing power supply. (+ extract of circuit diagram)
• Black screen via scart 1. Ok via scart 2. (picture attached)
• Black screen, sound ok, cathodes' potential at 180V. If connector removed, screen lights up green with flyback rasters.
• Geometry settings change after approx 3 weeks. New nos are stored in memory. Resetting works but same problem occurs after 3 weeks. (picture attached) (service info for SBR -333657)
• Poor or no front panel control on several functions. Interrupted or random sound. Ok with RC. New channels not stored.
• Programs are lost every 24 hours, option 12 must be readjusted every day. (with circuit diagram extract)
• When switching to standby the BUT11 goes defective. (extract of circuit diagram attached)
• Transistor destroyed instantly at power up after replacing FBT. (part of circuit diagram displayed) (333657 tips)
• No horizontal synchronisation and no audio at start-up. Picture appears after a while with audio only on certain channels.
• Enter service mode.
• Fuse 1638 (160mA) is defective. (+ extract of circuit diagram)
• Black band at each side of screen. Picture is wider at each corner.
• Humming in the loudspeaker during "stand-by". (part of circuit diagram displayed)
• Occasionally loses memory at switch on. (333657 tip from SBR)
• FBT starts up but then stops with PSU whistling. Functions correctly after several start ups. (+ extract of circuit diagram)
• High beep at switch on. No further function. (part of circuit diagram displayed) (service info for SBR -333657)
• Poor or no convergence. in the centre.
• No memory.
• Wrong channel display. In search, finds channel "30" and displays "21".
• Noise in picture, white horizontal line when cold.
• No picture. After on for a long time sometimes the picture appears again. (part of circuit diagram displayed)
• Very bad geometry. (+ extract of circuit diagram)
• Picture jumps, sound muted. After 10 mins. picture and sound OK. (SBR - 333657 information)
• Occasionally interference of TXT information in picture. Picture occasionally completely dark.
• Switches off after approx. a sec. Red and green LEDs flash.
• Dead. Line fuse blown.
• After replacing the line transistor 2SD1577PH with a BU508 these go defective again after a while.
• No TXT. Intermittently program display runs through.
• PSU squeaks. Scanning BU heats up, 5V on pin 16 of TDA2579. (+ extract of circuit diagram)
• Rating of fuse 1642.
• TXT runs through the picture. No OSD.
• Set up info.
• No commands.
• Picture changes depending on the volume. The +140V is unstable. (+ extract of circuit diagram)
• Distorted picture geometry. Excessive brightness.
• Spots on purity.
• No picture, no sound. Light screen. (with circuit diagram extract)
• The stand-by LED and Crisp LED are flashing.
• During service east/west cannot be controlled. (with circuit diagram extract)
• Picture and sound disappear after a cold start. Both return after a while, then remain.
• Recording picture tube A78EBK02X03.
• No channel storing.
• Horizontally out of sync. OK after setting adjustment number 00 and storing with PP store. Out of sync again after switching to standby.
• Channels change at random.
• No picture. No sound. PSU hums. (+ extract of circuit diagram)
• At start up screen remains dark for approx 2 mins then works correctly. Sound ok. (333657 tip from SBR)
• FBT defective after 1 min. Picture ok. Same after replacing FBT. Contacts ok. (+ extract of circuit diagram)
• Vertical linearity fault, cramp at bottom of picture.
• 5V and 8V missing. (service info for SBR -333657)
• Picture is too large. No function in Service Mode.
• No picture content during first 5 minutes. Sound present.
• Sound output stage is defective due to ESD. (with circuit diagram extract)
• Shows a sort of stabilization of AFC a number of times a day. Some channels worse than others. (+ extract of circuit diagram)
• No picture. No audio. when cold. (part of circuit diagram displayed)
• Two flashing LEDs when switched to standby and back to play with RC. Normal start up when switched off and on with mains switch. (with circuit diagram extract)
• Whistling noise from the very high voltage circuit according to the video content. (+ extract of circuit diagram)
• Horizontal jitter. TXT OK . (with circuit diagram extract)
• Delay between colour and "Y" signal is visible when receiving some channels.
• Spare part information, keyboard assy.
• Vertical collapse. (extract of circuit diagram attached)
• After some time the picture tears and appliance whistles.
• Dead. Weak noise from PSU. (with circuit diagram extract)
• Reception is too slow when switching. (+ extract of circuit diagram)
• No RC functions.
• Backup IC fails at switch off.
• Christmas tree effect.
• All the VHF channels show interference in the picture. (with circuit diagram extract)
• General information.
• No PSU. Green spot in middle of screen.
• Lines are torn. Sound and picture ok. Gets slowly better and has completely disappeared after approx 15 mins.
• No function. Just after starting up the appliance goes into standby.
• On most channels the picture waves vertically.
• Error search method line output transformer.
• No picture, no sound. Bright horizontal line in middle of screen. (part of circuit diagram displayed)
• Vertical instability. Unable to adjust.
• After a few mins black smudges in picture, after 5 mins whole picture is dark.
• No RGB on cathode of tube, line part ok. (picture attached)
• Angular E/W distortion and E/W variation. (SBR - 333657 information)
• After a few second BUT12 is destroyed.
• Squealing from PSU (at start-up).
• Cannot adjust contrast, blocked by EHT. When blockage is removed, power supply goes into protection mode.
• No E/W correction. intermittently. (with circuit diagram extract)
• E/W correction, frame size adjustment.
• Horizontal lines, especially on UHF. Looks like moire.
• Horizontal collapse when contrast is increased.