2571 PRAFEKTCOLOR / SCHAUBLORENZ [TV (Standard)]

• PSU doesn't start up when cold. (with circuit diagram extract)
• Horizontal picture position is incorrect, 5cm to the left. No picture intermittently. (with circuit diagram extract) (SCHAUBLORENZ - 2571 information)
• No PSU start-up.
• Picture appears slowly. (picture attached)
• White horizontal stripe about 5 cm from the bottom. Picture content bellow stripe is altered and noisy.
• Left picture side is brighter, even via AV. (part of circuit diagram displayed)
• Distorted vertical linearity. Barrel distortion. (with circuit diagram extract)
• Poor synchronisation. No picture. after a while.
• No horizontal or vertical deflection.
• Whenever a function is requested display lights up then switches off.
• Line transformer starts up but no display, nothing on the screen and no sound. (extract of circuit diagram attached)
• Blanking interval on left side of picture, colour flickers and screen dark after a while.
• Starts with noise (approx. 2-3 seconds), then it operates normally. (picture attached)
• Low brightness. Picture too big.
• 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.
• 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.
• Dark screen, only diffuse glow.
• Picture tearing.
• No functions.
• Does not fully go to TXT or only blue mix TXT. (picture attached)
• Poor audio.
• Intermittent flyback lines. Grey scale varies intermittently. Possibly no picture.
• 88 shown on LED display.
• No tuning.
• No control and cannot be switched off when started up from standby.
• 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. (+ extract of circuit diagram)
• Power supply hiccups. (2571 SCHAUBLORENZ repair tip)
• Wavy vertical lines in the entire picture when cold. Picture jitters. (+ extract of circuit diagram)
• Does not start up each time. When it functions, whistling and modulation of picture. This gets less in time.
• Black picture. Sound OK. Picture is OK after restart. (part of circuit diagram displayed)
• Picture is brighter on the right. Poor synchronisation after program switch-over. Picture becomes brighter and darker in AV. (picture attached)
• No vertical deflection. Horizontal line. Audio OK . (part of circuit diagram displayed)
• No picture. Hum in audio.
• 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.
• DF-AF adjustment.
• Excessive vertical size. Vertical foldover at bottom.
• Picture shifted horizontally. (extract of circuit diagram attached)
• No colour.
• Line foldover by start-up. No sound. After warm-up, picture and sound are OK. Sync is still unstable.
• Dark picture. Stripes after a while. OK after warm-up. (picture attached)
• Does not go into TXT mode. Mixed mode possible. (SCHAUBLORENZ - 2571 information)
• 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)
• Vertical jitter. when cold.
• 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.
• White point when switching off with ON/OFF switch. No point in standby.
• Blocked control processor.
• 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.
• Picture goes off after 1 minute; very low contrast, ok through scart. (extract of circuit diagram attached)
• No start-up (when cold).
• Does not switch ON. No power light showing.
• Switches to standby (intermittently).
• At switch on picture is condensed tnen enlarged. Pops loudly at approx 2 pulses per sec. Intermittent blast from speakers. (with circuit diagram extract)
• No start up after changing FBT and constant whistling noise. (+ extract of circuit diagram)
• PSU starts briefly, then no more HV. (+ extract of circuit diagram)
• When appliance receives in Nicam stereo, the TV goes into PAL.
• Defective linearity.
• Dark picture. on the right. (extract of circuit diagram attached)
• No functions. after a while. (2571 SCHAUBLORENZ repair tip)
• Control unit processor is defective. (picture attached) (service info for SCHAUBLORENZ -2571)
• Hum bars, especially on yellow or orange background.
• Impossible to adjust synchronisation. Picture shifted towards left. Right side of picture reduced by 8cm. (picture attached)
• No tuning. Higher channels in band I/III/V are not received.
• 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. (with circuit diagram extract)
• Noise in audio. (picture attached)
• No HT output from power supply. OK in standby. (+ extract of circuit diagram)
• Picture shifted to the left. Sometimes picture fails completely, then still only picture blanking stripes visible. (with circuit diagram extract)
• No picture (intermittently).
• Does not switch on. Fluttering noise from the loudspeakers. (with circuit diagram extract)
• Control unit does not function. Does not switch on. (part of circuit diagram displayed) (SCHAUBLORENZ - 2571 information)
• Standby display lights up briefly, then no function.
• One side of picture is black.
• After approx 20 mins colour TV switches off.
• NICAM check.
• No start-up. (part of circuit diagram displayed)
• Excessive brightness. Flyback lines. (with circuit diagram extract)
• Cuts out after switch on, soft hum from the speakers in standby mode.
• EHT is heard starting up then everything stops 4 secs later.
• No colour (intermittently).
• Dark picture.
• Blue, vertical stripe in the right third of the picture.
• Vertical, bright stripe faintly visible in the right third of the picture.
• Blue screen. Flyback lines. Audio OK .
• NICAM is missing.
• Faulty colour (green tinge, on upper picture edge, intermittently present). B/W picture OK. TXT and menu are OK too.
• Horizontal synchronisation fault, picture shifted towards left side. (with circuit diagram extract)
• Whistling HT. No start up due to incorrect HT frequency. May blow S2000 immediately. (extract of circuit diagram attached)
• No horizontal synchronisation. (picture attached)
• Attempts to start with no result. (with circuit diagram extract)
• Picture shifted to the right. (2571 tips)
• In a grey area - independent of colour saturation - you can see 2 vertical zones approx 15cm wide, greeny blue in colour with coloured edges.
• Black bar on the right side of the screen. Similar to displacement. (with circuit diagram extract)
• 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. (extract of circuit diagram attached)
• No picture content. Picture is greyish. (part of circuit diagram displayed)
• Picture shifted to the left, too small and not adjustable. (part of circuit diagram displayed)
• Intermittent loss of brightness, picture is black. Can be adjusted with RC. Or vice versa, picture is too light and can be adjusted.
• Display flashing and rattles at switch on. (extract of circuit diagram attached)
• Blank screen with purple haze at left hand side. (with circuit diagram extract)
• Intermittent no image or yellow colouring. Knock sensitive. (+ extract of circuit diagram) (2571 SCHAUBLORENZ repair tip)
• No start up after changing IC601. Nothing lights up on the front.
• Poor PSU start-up or BU defective. (with circuit diagram extract)
• Builds up high voltage for a short time and then switches off. (picture attached)
• Line tearing. at top. (extract of circuit diagram attached)
• Horizontal shaking. when cold.
• The teletext contrast is considerably too high after installing the teletext decoder. (2571 tip from SCHAUBLORENZ)
• Vertical and horizontal synchronisation available only after 2 mins.
• Loud noise. at start-up.
• Black bars on the bottom of picture. If V-amplitude is altered, picture disappears on the bottom. (part of circuit diagram displayed)
• Focus problem. Blurred vertically, ok horizontally after replacing microprocessor and line transformer. (2571 tips)
• Programmes change by themselves. RC is OK. (service info for SCHAUBLORENZ -2571)
• Pincushion distortion.
• When TV started up, transistor (S2000AF) instantly burn out. (part of circuit diagram displayed)
• 10cm black bar on the right of the screen. Voltages ok, corrections work. (part of circuit diagram displayed)
• Resistor R775 is defective.
• Eliminate safety mode of PSU.
• Noise in picture. Poor horizontal synchronisation. (service info for SCHAUBLORENZ -2571)
• HV arcing. (with circuit diagram extract) (2571 SCHAUBLORENZ repair tip)
• Picture is too wide. E/W distorted.
• Programming menu can not be accessed. (picture attached)
• Long picture at start up, black screen with rainbow spots.
• PSU chirps, at the same time bubbling and hum in loudspeakers. No functions. (picture attached) (2571 tips)
• 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.
• From a cold start line output stage transistor fails.
• PSU switches from standby to safety mode at switch on. (SCHAUBLORENZ - 2571 information)
• Lines in picture.
• No raster sync in HF. Ok in scart. (+ extract of circuit diagram) (service info for SCHAUBLORENZ -2571)
• Reduced raster size. (part of circuit diagram displayed)
• At Power On standby LED switches off immediately after switching on.
• Intermittently dead. (+ extract of circuit diagram)
• Occasionally blue screen. Picture ok when G2 adjusted then disappears again. When pressed too much picture remains incorrect then disappears.
• Vertical IC (TDA3654) becomes hot, then fails after several hours. Picture OK. (picture attached)
• Only standby LED lit. LED switches off at switch on then no function. (2571 tip from SCHAUBLORENZ)
• Horizontal stripe. in the centre.
• Power supply seems to remain in safety mode. (picture attached)
• Excessive brightness. in the centre. (picture attached)
• Horizontal jitter. Vertical jitter. (picture attached)
• Picture has moved approx 10cm to the left. Vertical black bar with a few coloured streaks. Colour OK. (extract of circuit diagram attached) (2571 tips)
• After the appliance is switched off a large spot of light appears for several seconds in the middle of the screen. (picture attached)
• Shuts down. after start-up. (+ extract of circuit diagram)
• Approx. 1cm bright, vertical line on the right hand side of the picture approx. 10cm from the edge.
• Horizontal synchronisation fault even after replacing TDA8372. Weak adjustment with pot R634. Line synchronisation OK. Comparator OK. Horizontal linearity is OK. (picture attached)
• Hums at switch on. (+ extract of circuit diagram) (2571 tip from SCHAUBLORENZ)
• No synchronisation (after start-up). (+ extract of circuit diagram)
• White, horizontal lines at the top of the picture. Lines decrease after a while but never disappear completely.
• Faint and too dark picture. Low brightness, contrast cannot be adjusted. Colour is adjustable.
• Channel TF1 (channel 22) does not hold in SECAM: remains in PAL. The other channels are normal.
• Text selection is not possible, takes only Mix or full text but not both. Also various other functions are defective.
• Vertical hum bars on picture, sometimes very visible and sometimes hardly at all.
• Picture collapse on half of the picture.
• Poor PSU start up. Severe crackle in the loudspeaker.
• Approx 20cm wide dark area in centre of picture and line tearing.
• Operation commands are not carried out.
• HV appears briefly and then disappears. (+ extract of circuit diagram)
• Automatic B/G-L detection does not work correctly with the Nicam sound carrier (TF1, FRANCE 2). (service info for SCHAUBLORENZ -2571)
• Bright picture. on the right. Dark picture. on the left. (part of circuit diagram displayed) (2571 tip from SCHAUBLORENZ)
• PSU is defective. 300V is present.
• Black vertical bars on picture, mostly visible in AV with no video source. (with circuit diagram extract)
• Switches to standby when mains switch is plugged in. Switches off when using RCU. (part of circuit diagram displayed)
• No horizontal synchronisation. at start-up. (extract of circuit diagram attached)
• Bright vertical stripes. No picture content. Sound OK. (extract of circuit diagram attached)
• Picture is out of alignment horizontally. 10cm black bar on the right. (with circuit diagram extract) (2571 tips)
• The picture is too large and wavers.
• Horizontal line.
• Intermittent block.
• Random operation commands. (2571 tip from SCHAUBLORENZ)
• Secondary voltages appear for 1 to 2 secs. then nothing else. Standby LED switches off. (service info for SCHAUBLORENZ -2571)
• HV builds up briefly and then shuts down
• Motorboating noise at switch on. Pin 13 of the TDA8372A is unsoldered. TV no longer pulsates. Power supply voltages ok. (picture attached)
• Can be switched to standby only if power plug is pulled out.
• Switches off when selecting a function via RC.
• Black screen. Display flashes once at switch on.
• No E/W correction. (+ extract of circuit diagram)
• Blank raster.
• Unusual TXT.
• PSU pulsates. Sound crackles. After few secs. appliance works fine.
• Picture with vertical and horizontal lines (when cold).
• Hums at switch on, dies out slowly. (2571 tips)
• Does not go into text mode, mix mode is not possible.
• Only snow in the picture, after changing the tuner the fault is still there.
• Remains in standby after changing power IC. (picture attached)
• Wavy picture. at top. (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.
• LED lights up briefly then nothing more.
• Slightly wavy picture in the middle of the screen. (picture attached)
• No synchronisation during the first few mins. (extract of circuit diagram attached)
• Line transformer starts up with an amplitude of 400V blemished by many interference lines.
• Distorted picture. on the right. (part of circuit diagram displayed)
• Double picture.
• High voltage build up for short time then PSU switches off. (with circuit diagram extract)
• T501 fails repeatedly.
• At switch on appliance pulsated then reverts to standby again.
• High voltage runs high. Flashover all over.
• Vertical lines. No colour. after a while.
• Picture too big. (picture attached)
• Poor vertical linearity at the bottom, also E/W error.
• No HV.
• Vertical curtain-like stripes which may be distributed over the entire screen. (picture attached)
• Stuck in standby.
• Goes into safety mode at switch on. If FBT is unsoldered then HT is re-established. No apparent S/C in secondary of FBT. (part of circuit diagram displayed)
• Slow start-up. when cold. (with circuit diagram extract) (SCHAUBLORENZ - 2571 information)
• No start up, no standby light, variable voltage on pin 16 of IC701. (picture attached)
• Strong blue dominance at top of picture. Rest of picture (approx half) ok. (with circuit diagram extract)
• Poor line and picture synchronisation when cold.
• Vertical dark bands running from left to centre of picture and separated by approx. 5cm.
• Goes into PAL reception when in NICAM reception on channel 64, programme N1. (2571 tips)
• Motorboating noise at switch on then goes into standby. When frame IC is unsoldered TV starts up. (picture attached) (2571 SCHAUBLORENZ repair tip)
• Picture only appears about 3 mins after switch on, when appliance is cold.
• E/W-fault.
• Line BU is abnormally hot.
• Few segments of the display too bright. Doesn't respond to commands.
• Stuck in standby; RC ineffective. Stanby LED flickers. (with circuit diagram extract)
• Enter service mode.
• 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. (with circuit diagram extract)
• Dead. after start-up.
• At start up the power supply starts up for 2 secs then the appliance apparently goes into safety mode. No fault on the secondary.
• If switched to standby, appliance pulsates and can be heard in loudspeakers. (part of circuit diagram displayed)
• Picture shifted to the left. (+ extract of circuit diagram) (2571 SCHAUBLORENZ repair tip)
• White screen. Flyback lines.
• Tripping.
• Line BU voltage = 140V. Value of capacitor C701 (in PSU) illegible. Still no display if line BU disconnected. (picture attached)
• Line transistor S2000AF defective at switch on from cold. (extract of circuit diagram attached)
• Picture is distorted and changes. Loss of colours. (part of circuit diagram displayed)
• PSU fails intermittently. (with circuit diagram extract)
• No picture. on lower half screen. (with circuit diagram extract)
• No TXT (intermittently).
• Cycles on/off.
• Loses sync at start-up for a few minutes.
• No vertical deflection. Only a horizontal bright line appears on CRT. Audio OK. (extract of circuit diagram attached) (2571 tip from SCHAUBLORENZ)
• Dark screen. on the right. (with circuit diagram extract)
• Switches to protection mode. at start-up. (extract of circuit diagram attached) (service info for SCHAUBLORENZ -2571)
• Resistor R515 becomes defective. (extract of circuit diagram attached)
• Brightness differs between left and right hand side of the screen.
• E/W fault. (extract of circuit diagram attached) (2571 tips)
• Output transistor (S2000) fails when started from cold.
• E/W trapezium does not function.
• Centre of snowy picture is darker than edges. (part of circuit diagram displayed)
• No tuning. only on certain channels. Dark screen. on the right.
• Shuts down. (picture attached)
• Afterglow on deflection tube after switch off.
• High voltage transistor (S2000) defective. (picture attached)
• Insufficient picture heigth (10cm) and severe linear distortion.
• Coloured lines (RGB test lines) in top of picture.
• PSU can not be loaded with 60W incandescent lamp.
• Horizontal white line.
• 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)
• Bright raster. Flyback lines.
• Vertical IC fails. (part of circuit diagram displayed)
• 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)
• Grey picture at switch on and sound which disappears after 15 mins. Grey screen with frizzy line on the sides when pressing G2.
• Excessive HV. (extract of circuit diagram attached)
• Transistor T701 fails when appliance is switched off and on.
• Sound cracks. Switches off. Display stays. Can be restarted with RC. (with circuit diagram extract)
• Very slight flickering with a light picture. (+ extract of circuit diagram)
• Sound channel 1 and 2 voltage level adjustment. (2571 tip from SCHAUBLORENZ)
• Collapses at start up, then switches off.
• Horizontal collapse. after a while. (picture attached)
• FBT blows after a few mins. (picture attached) (2571 SCHAUBLORENZ repair tip)
• Buzzing at start-up.
• Comes on for a short time. (+ extract of circuit diagram)
• Poor shading of picture, dark on one side and light on the other. (extract of circuit diagram attached)
• Line frequency changes downward (squeaking, whistling).
• Horizontal jitter. when cold.
• Picture amplitude is too weak. (SCHAUBLORENZ - 2571 information)
• Line output stage fails at switch on. With load (lamp) appliance can be switched on with squeaking noise. (+ extract of circuit diagram)
• Line tearing. (with circuit diagram extract)
• Unstable horizontal picture.
• Dark picture on 2/3 of screen on the left but brighter on 1/3 of screen on the right. (picture attached) (2571 tip from SCHAUBLORENZ)
• No picture. Audio OK . (+ extract of circuit diagram)
• Reduced contrast, especially on one side of the screen.
• Does not start from Standby.
• Very pale picture which is shifted to the left. Voltage is correct. (extract of circuit diagram attached)
• Too wide picture and East/West pincushion curving outward. (picture attached)
• No audio (when cold).
• Switches off immediately after plugging in mains. (part of circuit diagram displayed)
• Noise in the speakers and no start up or display on the front panel when switching on. (extract of circuit diagram attached)
• Only blue light at right in picture.
• Halts at switch on when cold. No start up. OK after a few attempts. (with circuit diagram extract)
• 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)
• Brightness varies. E/W fault. intermittently.
• Pulsating picture. (+ extract of circuit diagram)
• 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.
• Vertical line tearing. intermittently.
• Vertical collapse. (extract of circuit diagram attached)
• Picture shifted to the left. Alignment works normally. (extract of circuit diagram attached)
• Stops after 5 seconds. No standby LED. (extract of circuit diagram attached)
• Picture rolls. when cold. (+ extract of circuit diagram)
• PSU doesn't start-up or only after a while. Cracking sound.
• Poor adjustment of horizontal picture centering. (part of circuit diagram displayed)
• Erratic functions. (extract of circuit diagram attached)
• No picture. No audio. (+ extract of circuit diagram)
• Illegible display. (part of circuit diagram displayed)
• Reduced vertical size.
• Flashing picture. (with circuit diagram extract)
• Rattling noise or bubbling at start-up (when cold). (+ extract of circuit diagram) (service info for SCHAUBLORENZ -2571)
• Switches off completely after switch on. No standby function. (part of circuit diagram displayed)
• Convex picture. Defective lower linearity. (part of circuit diagram displayed)
• Excessive horizontal size. (with circuit diagram extract)
• At switch ON, set screams. Pressing on the on/off switch gives same condition. Standby LED's off.
• Instructions on how to put appliance into Service-Mode.
• Picture and sound missing. Via scart socket with video recorder OK (part of circuit diagram displayed)
• No vertical deflection. intermittently.
• Dead.
• Standby display lights up for a short time. Line output stage attempts to function, but switches off immediately.
• Does not switch to standby. (picture attached) (2571 SCHAUBLORENZ repair tip)
• AV correction.
• No TXT.
• Shadowing effect, left side of picture is brighter than the right one. (+ extract of circuit diagram)
• No functions. Red LED does not flash. (SCHAUBLORENZ - 2571 information)
• 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.
• Unstable picture. (extract of circuit diagram attached)
• Intermittently line tearing in the middle (approx. 20cm wide). (picture attached)
• No start-up from standby.
• 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.
• Line synchronisation available only after 2 mins.
• Dark picture. intermittently.
• Picture with a 10cm vertical band on the right side. Negative picture behind this black band.
• Vertical or horizontal picture shaking both when hot and cold. (with circuit diagram extract)
• Top third of screen has ragged vertical lines.
• At the top edge of the picture an unusual stain effect appears and line tearing.
• 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)
• Unclear picture with Hum content.
• Picture takes 15 secs. to appear. Sound ok and EHT present.
• Time constant switching over only occurs on memory sites 37 to 39 and AV.
• Picture shaking in a random direction. (with circuit diagram extract)
• Appliance whistles. Sound and picture present. Picture interference (lines approx one centimeter apart over the whole of the picture).
• Will not select text, or will only select mix or full text but not both, various other functions faulty. (2571 SCHAUBLORENZ repair tip)
• Power supply defective after a few days. (extract of circuit diagram attached) (2571 SCHAUBLORENZ repair tip)
• Picture distorted, shifted upwards and a little bit too wide. (2571 tip from SCHAUBLORENZ)