21D81 / SCHAUBLORENZ [TV]

• Does not switch to standby. (part of circuit diagram displayed) (service info for SCHAUBLORENZ -21D81)
• Faulty colour (green tinge, on upper picture edge, intermittently present). B/W picture OK. TXT and menu are OK too.
• No picture. Audio OK . (+ extract of circuit diagram)
• Picture and sound missing. Via scart socket with video recorder OK (with circuit diagram extract)
• Dark screen at start up. Line transformer ok with flyback lines. Top 2 or 3 lines ok. In PB apparently functions around the IC TDA8372A. (part of circuit diagram displayed)
• PSU doesn't start-up or only after a while. Cracking sound.
• Bright raster. Flyback lines.
• Can be switched to standby only if power plug is pulled out.
• Hums at switch on, dies out slowly.
• DF-AF adjustment.
• Only standby LED lit. LED switches off at switch on then no function.
• Dark picture.
• Wavy picture. at top. (with circuit diagram extract)
• NICAM is missing.
• Occasionally blue screen. Picture ok when G2 adjusted then disappears again. When pressed too much picture remains incorrect then disappears.
• Noise in picture. Poor horizontal synchronisation.
• Power supply defective after a few days. (picture attached)
• Intermittently dead. (with circuit diagram extract)
• Control unit does not function. Does not switch on. (+ extract of circuit diagram)
• Few segments of the display too bright. Doesn't respond to commands.
• Buzzing at start-up.
• Blank screen with purple haze at left hand side. (+ extract of circuit diagram)
• Control unit processor is defective. (+ extract of circuit diagram)
• PSU is defective. 300V is present.
• Picture too big. (with circuit diagram extract)
• Dark screen, only diffuse glow.
• E/W-fault. (SCHAUBLORENZ - 21D81 information)
• AV correction.
• Coloured lines (RGB test lines) in top of picture.
• High voltage build up for short time then PSU switches off. (+ extract of circuit diagram)
• Pincushion distortion.
• After approx 20 mins colour TV switches off. (21D81 tip from SCHAUBLORENZ)
• Random operation commands.
• Blank raster.
• Switches to standby when mains switch is plugged in. Switches off when using RCU. (picture attached)
• No start up after changing FBT and constant whistling noise. (extract of circuit diagram attached)
• At switch on, lights light up for an instant, voltage which ought to reach 145V increases to 60V but then goes back to 0V. (picture attached)
• After transporting an appliance, the first time it starts up there may be distorted playback of colour (flickering, drop out or stripes) and/or defective teletext playback.
• Starts with noise (approx. 2-3 seconds), then it operates normally. (picture attached)
• At Power On standby LED switches off immediately after switching on.
• No audio (when cold).
• Line transistor S2000AF defective at switch on from cold. (part of circuit diagram displayed)
• Front LED briefly lights up at switch on then it switches off. LED remains lit when mains plug is connected and disconnected but it definitely switches off at start up.
• Power supply seems to remain in safety mode. (with circuit diagram extract)
• Dead. after start-up.
• Remains in standby. Starts up when wiper forced. 88 on display. No picture and no sound. Goes into standby as soon as switch is released. (+ extract of circuit diagram)
• Horizontal collapse. after a while. (with circuit diagram extract) (service info for SCHAUBLORENZ -21D81)
• Flashing picture. (with circuit diagram extract)
• PSU doesn't start up when cold. (+ extract of circuit diagram)
• PSU cannot be started from Stand By. 145V voltage in an unloaded condition is at approx 105V, the connected lamp does not light up, the voltage then collapses to approx 20V. (+ extract of circuit diagram)
• Line frequency changes downward (squeaking, whistling).
• No TXT (intermittently).
• Eliminate safety mode of PSU. (service info for SCHAUBLORENZ -21D81)
• PSU fails intermittently. (extract of circuit diagram attached) (service info for SCHAUBLORENZ -21D81)
• Resistor R775 is defective.
• Only blue light at right in picture.
• Shadowing effect, left side of picture is brighter than the right one. (part of circuit diagram displayed)
• Does not fully go to TXT or only blue mix TXT. (+ extract of circuit diagram)
• Poor vertical linearity at the bottom, also E/W error.
• Secondary voltages appear for 1 to 2 secs. then nothing else. Standby LED switches off.
• Vertical and horizontal synchronisation available only after 2 mins.
• Black screen. Display flashes once at switch on.
• Centre of snowy picture is darker than edges. (extract of circuit diagram attached)
• Line BU is abnormally hot.
• Vertical jitter. when cold.
• No start up after changing IC601. Nothing lights up on the front.
• Picture is distorted and changes. Loss of colours. (picture attached)
• Poor line and picture synchronisation when cold.
• Programming menu can not be accessed. (extract of circuit diagram attached)
• Impossible to adjust synchronisation. Picture shifted towards left. Right side of picture reduced by 8cm. (picture attached)
• Reduced contrast, especially on one side of the screen.
• Standby display lights up for a short time. Line output stage attempts to function, but switches off immediately.
• Switches to protection mode. at start-up. (part of circuit diagram displayed)
• No raster sync in HF. Ok in scart. (+ extract of circuit diagram)
• No HT output from power supply. OK in standby. (part of circuit diagram displayed)
• At the top edge of the picture an unusual stain effect appears and line tearing.
• Poor synchronisation. No picture. after a while. (21D81 tips)
• Dark screen. on the right. (part of circuit diagram displayed)
• No tuning. only on certain channels. Dark screen. on the right. (21D81 SCHAUBLORENZ repair tip)
• PSU can not be loaded with 60W incandescent lamp.
• Vertical, bright stripe faintly visible in the right third of the picture.
• Resistor R515 becomes defective. (extract of circuit diagram attached)
• Blue screen. Flyback lines. Audio OK .
• Rattling noise or bubbling at start-up (when cold). (picture attached) (SCHAUBLORENZ - 21D81 information)
• Attempts to start with no result. (with circuit diagram extract)
• Distorted picture. on the right. (+ extract of circuit diagram) (service info for SCHAUBLORENZ -21D81)
• White horizontal stripe about 5 cm from the bottom. Picture content bellow stripe is altered and noisy.
• LED lights up briefly then nothing more. (21D81 tip from SCHAUBLORENZ)
• Black bar on the right side of the screen. Similar to displacement. (+ extract of circuit diagram)
• Vertical or horizontal picture shaking both when hot and cold. (+ extract of circuit diagram)
• High voltage runs high. Flashover all over.
• Defective linearity.
• Line tearing. at top. (extract of circuit diagram attached)
• Distorted vertical linearity. Barrel distortion. (extract of circuit diagram attached)
• Horizontal shaking. when cold.
• Slow start-up. when cold. (picture attached)
• Intermittent loss of brightness, picture is black. Can be adjusted with RC. Or vice versa, picture is too light and can be adjusted.
• No functions. after a while.
• Especially when cold some channels are not in the French standard. They remain in FM sound and inverted video. When warm and when changing programme suddenly picture and sound appear correctly. (extract of circuit diagram attached)
• Picture shifted to the left. Alignment works normally. (extract of circuit diagram attached)
• Wavy vertical lines in the entire picture when cold. Picture jitters. (extract of circuit diagram attached)
• Output transistor (S2000) fails when started from cold.
• Picture is out of alignment horizontally. 10cm black bar on the right. (+ extract of circuit diagram)
• Dark picture. Stripes after a while. OK after warm-up. (extract of circuit diagram attached)
• Black bars on the bottom of picture. If V-amplitude is altered, picture disappears on the bottom. (picture attached)
• Picture tearing.
• Excessive brightness. in the centre. (+ extract of circuit diagram)
• From a cold start line output stage transistor fails.
• Automatic B/G-L detection does not work correctly with the Nicam sound carrier (TF1, FRANCE 2).
• Vertical hum bars on picture, sometimes very visible and sometimes hardly at all.
• Switches off when selecting a function via RC.
• No tuning.
• Picture shifted to the left. Sometimes picture fails completely, then still only picture blanking stripes visible. (+ extract of circuit diagram) (SCHAUBLORENZ - 21D81 information)
• Noise in audio. (with circuit diagram extract)
• Faint and too dark picture. Low brightness, contrast cannot be adjusted. Colour is adjustable.
• Unstable picture. (part of circuit diagram displayed)
• Vertical collapse. (picture attached)
• Insufficient picture heigth (10cm) and severe linear distortion.
• White, horizontal lines at the top of the picture. Lines decrease after a while but never disappear completely.
• No control and cannot be switched off when started up from standby. (21D81 tip from SCHAUBLORENZ)
• Erratic functions. (part of circuit diagram displayed)
• No PSU start-up.
• Channel TF1 (channel 22) does not hold in SECAM: remains in PAL. The other channels are normal.
• No picture. on lower half screen. (extract of circuit diagram attached)
• No start-up from standby.
• Vertical curtain-like stripes which may be distributed over the entire screen. (+ extract of circuit diagram)
• No picture. No audio. (part of circuit diagram displayed)
• If switched to standby, appliance pulsates and can be heard in loudspeakers. (extract of circuit diagram attached)
• HV arcing. (+ extract of circuit diagram)
• Picture with vertical and horizontal lines (when cold).
• At switch on picture is condensed tnen enlarged. Pops loudly at approx 2 pulses per sec. Intermittent blast from speakers. (with circuit diagram extract)
• Standby display lights up briefly, then no function.
• Hum bars, especially on yellow or orange background.
• Dead. (service info for SCHAUBLORENZ -21D81)
• Picture with a 10cm vertical band on the right side. Negative picture behind this black band.
• Switches to standby (intermittently).
• No vertical deflection. Only a horizontal bright line appears on CRT. Audio OK. (picture attached)
• Strong blue dominance at top of picture. Rest of picture (approx half) ok. (with circuit diagram extract)
• Picture distorted, shifted upwards and a little bit too wide.
• Transistor T701 fails when appliance is switched off and on. (21D81 tips)
• Horizontal white line.
• Ok with signal. Without signal: unstable line frequency, line stage transformer makes a loud whistling noise and T511 (scanning transistor) shorts. (part of circuit diagram displayed)
• No horizontal synchronisation. (part of circuit diagram displayed)
• No picture (intermittently).
• Horizontal stripe. in the centre.
• The teletext contrast is considerably too high after installing the teletext decoder.
• Horizontal jitter. Vertical jitter. (part of circuit diagram displayed)
• No picture. Hum in audio.
• Sound channel 1 and 2 voltage level adjustment.
• Intermittent flyback lines. Grey scale varies intermittently. Possibly no picture. (SCHAUBLORENZ - 21D81 information)
• Poor audio.
• White screen. Flyback lines.
• Line output stage fails at switch on. With load (lamp) appliance can be switched on with squeaking noise. (picture attached)
• Stops after 5 seconds. No standby LED. (part of circuit diagram displayed)
• Picture amplitude is too weak.
• Motorboating noise at switch on. Pin 13 of the TDA8372A is unsoldered. TV no longer pulsates. Power supply voltages ok. (picture attached)
• Picture only appears about 3 mins after switch on, when appliance is cold.
• Sound cracks. Switches off. Display stays. Can be restarted with RC. (+ extract of circuit diagram)
• At switch on appliance pulsated then reverts to standby again.
• Picture is too wide. E/W distorted.
• Line tearing. (part of circuit diagram displayed)
• Excessive brightness. Flyback lines. (with circuit diagram extract)
• No TXT.
• Low brightness. Picture too big.
• Black vertical bars on picture, mostly visible in AV with no video source. (+ extract of circuit diagram)
• High voltage transistor (S2000) defective. (extract of circuit diagram attached)
• Time constant switching over only occurs on memory sites 37 to 39 and AV.
• HT starts up, appliance switches off immediately. Power supply with lamp OK but documentation states voltage must be 60-100V when pin 4 of line transformer disconnected and lamp connected to D765 60-100V. Voltage in this case is 145V.
• Whenever a function is requested display lights up then switches off.
• Blanking interval on left side of picture, colour flickers and screen dark after a while.
• Slightly wavy picture in the middle of the screen. (extract of circuit diagram attached)
• Poor PSU start up. Severe crackle in the loudspeaker.
• When appliance receives in Nicam stereo, the TV goes into PAL.
• Excessive HV. (extract of circuit diagram attached)
• Bright picture. on the right. Dark picture. on the left. (picture attached)
• Grey picture at switch on and sound which disappears after 15 mins. Grey screen with frizzy line on the sides when pressing G2. (SCHAUBLORENZ - 21D81 information)
• Dark picture. intermittently.
• After the appliance is switched off a large spot of light appears for several seconds in the middle of the screen. (with circuit diagram extract)
• Picture appears slowly. (part of circuit diagram displayed)
• Blue, vertical stripe in the right third of the picture.
• No synchronisation during the first few mins. (part of circuit diagram displayed)
• HV builds up briefly and then shuts down
• No colour (intermittently).
• Does not switch ON. No power light showing.
• Line transformer starts up but no display, nothing on the screen and no sound. (part of circuit diagram displayed) (21D81 SCHAUBLORENZ repair tip)
• Intermittently line transistor defective at start up. Fault also occurs intermittently in channel search or when switching to another channel. Once appliance runs, it runs well.
• Halts at switch on when cold. No start up. OK after a few attempts. (extract of circuit diagram attached)
• E/W trapezium does not function.
• Impossible to adjust the horizontal synchronization. Picture has shifted 10cm to the left. TDA 8372A on pin 20 has already been replaced, sandcastle incorrect. Power supply is good. (part of circuit diagram displayed)
• Collapses at start up, then switches off.
• The plug receptacle of the teletext decoder, which is contained in the additional component, does not fit mechanically into the socket receptacle of the appliance chassis.
• Left picture side is brighter, even via AV. (part of circuit diagram displayed) (service info for SCHAUBLORENZ -21D81)
• Picture shifted to the left. (with circuit diagram extract)
• Goes into PAL reception when in NICAM reception on channel 64, programme N1.
• Vertical dark bands running from left to centre of picture and separated by approx. 5cm.
• Dark picture on 2/3 of screen on the left but brighter on 1/3 of screen on the right. (with circuit diagram extract)
• Bright vertical stripes. No picture content. Sound OK. (picture attached)
• Hums at switch on. (picture attached)
• Stuck in standby.
• When the appliance is switched on it goes into undefined operating conditions ie. in spite of correct operating voltages the appliance has eg. no picture, no sound, no display etc.
• Power supply hiccups.
• Switches off completely after switch on. No standby function. (+ extract of circuit diagram)
• Unstable horizontal picture.
• Switches on for a short time with RC, then switches off. "I" and "II" flicker on display. LED doesn't light. Starts up again with RC, if previously disconnected from mains. (SCHAUBLORENZ - 21D81 information)
• No colour.
• Intermittent no image or yellow colouring. Knock sensitive. (+ extract of circuit diagram) (SCHAUBLORENZ - 21D81 information)
• Shuts down. (with circuit diagram extract)
• Vertical lines. No colour. after a while.
• Poor shading of picture, dark on one side and light on the other. (with circuit diagram extract) (21D81 SCHAUBLORENZ repair tip)
• FBT blows after a few mins. (+ extract of circuit diagram)
• Goes into safety mode at switch on. If FBT is unsoldered then HT is re-established. No apparent S/C in secondary of FBT. (with circuit diagram extract)
• Black picture. Sound OK. Picture is OK after restart. (picture attached)
• Excessive horizontal size. (part of circuit diagram displayed)
• Picture shifted to the right.
• Double picture.
• No tuning. Higher channels in band I/III/V are not received.
• Horizontal synchronisation fault, picture shifted towards left side. (extract of circuit diagram attached) (21D81 tips)
• Text selection is not possible, takes only Mix or full text but not both. Also various other functions are defective.
• Motorboating noise at switch on. When you change IC701 the TV starts up again, it is possible to switch it off and to start it up by using standby. Otherwise, the fault starts again. (picture attached)
• Reduced raster size. (with circuit diagram extract)
• Unusual TXT.
• Horizontal picture position is incorrect, 5cm to the left. No picture intermittently. (+ extract of circuit diagram)
• PSU chirps, at the same time bubbling and hum in loudspeakers. No functions. (part of circuit diagram displayed)
• Does not switch on. Fluttering noise from the loudspeakers. (part of circuit diagram displayed)
• As described in the manual it is possible to operate the video recorder on all program places through the aerial. But some appliances only change over on channels 37-39.
• Comes on for a short time. (picture attached)
• No start-up. (with circuit diagram extract)
• Will not select text, or will only select mix or full text but not both, various other functions faulty.
• Operation commands are not carried out.
• Tripping. (21D81 SCHAUBLORENZ repair tip)
• No start up, no standby light, variable voltage on pin 16 of IC701. (+ extract of circuit diagram)
• Dark picture. on the right. (picture attached)
• Cuts out after switch on, soft hum from the speakers in standby mode.
• Remains in standby after changing power IC. (extract of circuit diagram attached)
• Lines in picture.
• Picture takes 15 secs. to appear. Sound ok and EHT present.
• Loses sync at start-up for a few minutes.
• Picture shifted horizontally. (+ extract of circuit diagram)
• No functions.
• Loud noise. at start-up.
• Instructions on how to put appliance into Service-Mode.
• 88 shown on LED display.
• Shuts down. after start-up. (extract of circuit diagram attached)
• Line synchronisation available only after 2 mins.
• Picture shaking in a random direction. (with circuit diagram extract)
• Only snow in the picture, after changing the tuner the fault is still there.
• Excessive vertical size. Vertical foldover at bottom.
• Horizontal synchronisation fault even after replacing TDA8372. Weak adjustment with pot R634. Line synchronisation OK. Comparator OK. Horizontal linearity is OK. (+ extract of circuit diagram)
• Horizontal line.
• In a grey area - independent of colour saturation - you can see 2 vertical zones approx 15cm wide, greeny blue in colour with coloured edges. (SCHAUBLORENZ - 21D81 information)
• No start-up (when cold).
• No E/W correction. (picture attached) (21D81 SCHAUBLORENZ repair tip)
• Picture has moved approx 10cm to the left. Vertical black bar with a few coloured streaks. Colour OK. (part of circuit diagram displayed)
• Vertical IC (TDA3654) becomes hot, then fails after several hours. Picture OK. (picture attached)
• Pulsating picture. (picture attached)
• Brightness differs between left and right hand side of the screen.
• Focus problem. Blurred vertically, ok horizontally after replacing microprocessor and line transformer.
• Approx. 1cm bright, vertical line on the right hand side of the picture approx. 10cm from the edge.
• 10cm black bar on the right of the screen. Voltages ok, corrections work. (extract of circuit diagram attached)
• Builds up high voltage for a short time and then switches off. (part of circuit diagram displayed)
• Convex picture. Defective lower linearity. (picture attached)
• Blocked control processor.
• Display flashing and rattles at switch on. (+ extract of circuit diagram)
• Very pale picture which is shifted to the left. Voltage is correct. (part of circuit diagram displayed) (21D81 tip from SCHAUBLORENZ)
• Does not start up each time. When it functions, whistling and modulation of picture. This gets less in time.
• E/W fault. (with circuit diagram extract)
• Reduced vertical size.
• Line BU voltage = 140V. Value of capacitor C701 (in PSU) illegible. Still no display if line BU disconnected. (picture attached)
• PSU switches from standby to safety mode at switch on.
• No horizontal synchronisation. at start-up. (part of circuit diagram displayed)
• Approx 20cm wide dark area in centre of picture and line tearing.
• Cycles on/off.
• The picture is too large and wavers.
• One side of picture is black.
• Picture goes off after 1 minute; very low contrast, ok through scart. (extract of circuit diagram attached)
• Enter service mode.
• Picture shifted to the left, too small and not adjustable. (part of circuit diagram displayed)
• Poor adjustment of horizontal picture centering. (part of circuit diagram displayed)
• Line transformer starts up with an amplitude of 400V blemished by many interference lines.
• Unclear picture with Hum content.
• Too wide picture and East/West pincushion curving outward. (+ extract of circuit diagram)
• Intermittent block. (service info for SCHAUBLORENZ -21D81)
• Noise in the speakers and no start up or display on the front panel when switching on. (part of circuit diagram displayed)
• Switches off immediately after plugging in mains. (extract of circuit diagram attached)
• Top third of screen has ragged vertical lines.
• Intermittently line tearing in the middle (approx. 20cm wide). (with circuit diagram extract)
• Brightness varies. E/W fault. intermittently.
• At switch ON, set screams. Pressing on the on/off switch gives same condition. Standby LED's off.
• Motorboating noise at switch on then goes into standby. When frame IC is unsoldered TV starts up. (extract of circuit diagram attached)
• Long picture at start up, black screen with rainbow spots.
• No HV.
• When TV started up, transistor (S2000AF) instantly burn out. (+ extract of circuit diagram)
• No vertical deflection. Horizontal line. Audio OK . (part of circuit diagram displayed)
• No functions. Red LED does not flash.
• EHT is heard starting up then everything stops 4 secs later.
• NICAM check.
• Horizontal jitter. when cold.
• Stuck in standby; RC ineffective. Stanby LED flickers. (picture attached)
• Does not go into TXT mode. Mixed mode possible.
• At start up the power supply starts up for 2 secs then the appliance apparently goes into safety mode. No fault on the secondary.
• Line foldover by start-up. No sound. After warm-up, picture and sound are OK. Sync is still unstable.
• Programmes change by themselves. RC is OK.
• Very slight flickering with a light picture. (extract of circuit diagram attached)
• Appliance whistles. Sound and picture present. Picture interference (lines approx one centimeter apart over the whole of the picture).
• Illegible display. (picture attached) (21D81 tip from SCHAUBLORENZ)
• Picture rolls. when cold. (picture attached)
• Poor PSU start-up or BU defective. (part of circuit diagram displayed)
• Does not go into text mode, mix mode is not possible.
• PSU pulsates. Sound crackles. After few secs. appliance works fine.
• Picture collapse on half of the picture.
• Vertical IC fails. (extract of circuit diagram attached)
• White screen, horizontal lines without video signal. OK on scart output T971 OK IC950 OK. No beam limiter on 15 of IC950. Flash on the screen when changing channels.
• PSU starts briefly, then no more HV. (part of circuit diagram displayed)
• Afterglow on deflection tube after switch off.
• T501 fails repeatedly.
• No picture content. Picture is greyish. (with circuit diagram extract)
• Does not start from Standby.
• At switch on, functions but with no picture. By pressing the CRT module it unblocks and the picture appears. Predominant colour depends on the pressure used.
• Whistling HT. No start up due to incorrect HT frequency. May blow S2000 immediately. (+ extract of circuit diagram)
• White point when switching off with ON/OFF switch. No point in standby.
• No horizontal or vertical deflection. (SCHAUBLORENZ - 21D81 information)
• Vertical line tearing. intermittently.
• No vertical deflection. intermittently.
• Picture is brighter on the right. Poor synchronisation after program switch-over. Picture becomes brighter and darker in AV. (picture attached) (SCHAUBLORENZ - 21D81 information)
• HV appears briefly and then disappears. (extract of circuit diagram attached)
• When ON/OFF switch is pressed LED lights up and then switches off. If line BU is replaced by lamp, it lights up and collector goes down to 124V instead of 155V. (extract of circuit diagram attached) (service info for SCHAUBLORENZ -21D81)
• No synchronisation (after start-up). (picture attached)