7669801 IS7039VT / BLAUPUNKT [TV 70-74 (66-70) cm picture]

• In a cable system appliance should receive a French band I channel (audio carrier -6.5MHz), which is converted into a CCIR Band I channel (audio carrier +6.5MHz).
• Switch-over to 2-digit display.
• Line output stage transistor becomes hot and fails after a short time.
• R521 burns for no apparent reason.
• No RC functions. (extract of circuit diagram attached)
• Dead. Standby light is on. 9V on pin 9 of TDA4601 is low. (extract of circuit diagram attached)
• Code A on control µP SDA2083. (+ extract of circuit diagram) (7669801 tip from BLAUPUNKT)
• Ripples in the middle of the picture.
• Interference in picture. (extract of circuit diagram attached)
• PSU does not start up. It makes a type of clicking noise. Horizontal line on the picture which turns to zigzags towards the bottom. (part of circuit diagram displayed)
• After 2 secs sound disappears, after a while it reappears. Symptom repeats itself from time to time. (picture attached)
• Line BU508A S/C. (extract of circuit diagram attached)
• IC2240 (MC144130P) is defective.
• Programmes skip when tuning. Sound fluctuates or disappears.
• Crackling audio. Volume varies. (+ extract of circuit diagram) (BLAUPUNKT - 7669801 information)
• Crackling audio.
• Stains in the top corner (colour purity!).
• Squealing noise. when cold. (extract of circuit diagram attached)
• Flyback lines. (part of circuit diagram displayed)
• Fails to start up. Signs in display make no sense. (+ extract of circuit diagram)
• Loss of gain, significant intermittent moire giving the impression of a tuner fault.
• No audio. OK via SCART .
• Moire pattern. when cold.
• Poor picture synchronization, runs through depending on picture content. OSD distorted (e.g. digial Sat and OSDs generated by the appliance appear sharply bent to the right).
• Faulty TXT.
• 10cm raster picture.
• Poor linearity.
• Picture too bright. Volume turns to maximum suddenly. OSD ragging. No switching possible.
• Spot of light when switching off the appliance. (+ extract of circuit diagram)
• Segments and figures flicker on the screen. White picture. No sound.
• Comes on for a short time. (picture attached)
• Horizontal foldover. at top. Flyback lines. at top. (+ extract of circuit diagram)
• Clicking noise. in standby. (with circuit diagram extract)
• Mains fuse (2.5A) blows every 2 or 3 days.
• Colour flickers. No colour. after a while. Dark picture.
• Green picture. at top. Flyback lines.
• Picture is vertically too small, jitters vertically, slight tearing, in particular when cold. Knock sensitive.
• Bright picture. Flyback lines. Switches to standby. after a few seconds. (with circuit diagram extract)
• Intermittently phase variation. (with circuit diagram extract)
• Channel names appear continuously or not at all. (7669801 BLAUPUNKT repair tip)
• No picture. Distorted audio. (with circuit diagram extract)
• Krack after approx. 1 sec. after starting.
• Geometry change (e.g. linearity on top) at shock.
• BU508AG blows after 1 min. (picture attached)
• Channel number is displayed constantly.
• Collapsing picture. Flyback lines.
• Picture becomes suddenly dark or bright. (service info for BLAUPUNKT -7669801)
• Intermittently TXT lines and /or coloured test lines at upper picture edge when cold.
• Faulty TXT. only on certain channels.
• No start up when switched on with mains switch. (picture attached)
• Bright picture. Flyback lines. Shuts down. after a while. (part of circuit diagram displayed)
• Crackling audio. Does not switch over between MONO and STEREO. No audio when aerial is pulled off. No audio after a few minutes. (with circuit diagram extract) (BLAUPUNKT - 7669801 information)
• Picture available in standby. (7669801 BLAUPUNKT repair tip)
• Very loud cracking sound at switch on. OK after a few secs, and sometimes for days.
• No S/VIDEO function, only AV position.
• No display. Grey screen. Flyback lines. (+ extract of circuit diagram)
• Reduced vertical size. Flyback lines. (picture attached)
• Hum in picture with a high volume, visible in form of horizontal stripes in the rhythm of the sound. (part of circuit diagram displayed)
• Flyback lines (teletext lines) in top third of the picture. Fault does not occur with channels without teletext (+ extract of circuit diagram)
• 7 white lines on screen. (with circuit diagram extract)
• No tuning. (BLAUPUNKT - 7669801 information)
• Change from one AV position to 2 AV positions.
• Vertical edges of picture run in zigzag lines or are frayed (+ extract of circuit diagram)
• Dark picture, no audio. No AV mode in either direction.
• No switch-over to AV mode. AV indicated in program display.
• BUT76 fails after a short time.
• Functions perfectly but occasionally interference lines move from the top to the bottom, creating zigzags and jagged outlines at the level of the vertical lines. (picture attached)
• Switching off the two-digit programme sites (10-29, 10-49, 10-99 depending on the individual set). Switchover using the numeric buttons will therefore become quicker. Two-digit programme sites can still be chosen with rocker switch.
• No raster on band 3 and band 1, only UHF . (7669801 tip from BLAUPUNKT)
• Brightness varies.
• No start-up. when cold. (extract of circuit diagram attached)
• Display plays up at switch on. No picture content
• No sound via RF. Noise wenn volume is increased via RC. sound ok via AV.
• Appliance disturbs other appliances operated in the same room (VHF or band I/III), also in standby position. (picture attached)
• No audio. Picture OK . (with circuit diagram extract)
• Picture too small. (+ extract of circuit diagram)
• Switches to standby (intermittently). (BLAUPUNKT - 7669801 information)
• No colour. Brightness varies. Flyback lines. (part of circuit diagram displayed)
• No picture. Display OK . (part of circuit diagram displayed)
• Starts in AV mode.
• Only starting with RC. (picture attached)
• Bright raster. Flyback lines. Shuts down. (7669801 tip from BLAUPUNKT)
• Burst mode. No display. Buzzing sound. (part of circuit diagram displayed)
• Poor audio.
• Reduced horizontal size. Pincushion distortion. (with circuit diagram extract)
• No picture. Noise. (extract of circuit diagram attached)
• One or two AV positions.
• Programming a set using the programmer HTP89.
• Interference in B I/III. (picture attached) (7669801 tip from BLAUPUNKT)
• Picture too small. No colour. intermittently. (+ extract of circuit diagram)
• Intermittent audio.
• FLOF modification.
• Faulty display operation.
• Dark screen. Audio and OSD OK . (part of circuit diagram displayed)
• Dark picture. when cold.
• Setting of automatic standby time is lost after 10 mins without a signal. Function has to be reset after every start up.
• PSU pulsates. (with circuit diagram extract)
• Snow in picture. when cold.
• Sound in picture. (picture attached)
• IC526 (TDA8140) gets very hot. Switches off. (7669801 tip from BLAUPUNKT)
• Solid grey picture. Random indications on display. Only standby line visible after 1 min. No operation, no activity on clock and data line.
• Noise in picture.
• No picture. after a few minutes. Hum in audio.
• Station identification display is constant instead of temporary.
• Volume varies. intermittently. (with circuit diagram extract)
• Picture wobbles with PB from a video recorder via AV socket. Vertical lines seems misaligned. Normal TV operation is ok
• No colour. after start-up.
• Excessive vertical size (intermittently). (+ extract of circuit diagram)
• Dark picture. (extract of circuit diagram attached)
• Dead. Seems like no current consumption.
• To make flashing disappear while switching over channel when programming from 1 to 9.
• Numerical adjustment of phase and line frequency on multistandard and modified models.
• Vertical streaks. on the left (via AV). (part of circuit diagram displayed)
• 1cm wide stripes in the top third of the picture, become weaker towards the middle. Vertical lines are folded over in a zig zag shape. (+ extract of circuit diagram)
• When the set is connected to a cable TV-system, and certain channels cannot be received at all or only with a poor quality, probably the wrong channel grid has been set.
• White picture and flyback lines then no functions after 30 secs. Ok when G2 adjusted to 250V. (picture attached)
• Front screen.
• Son adjustment varies at low volume. (picture attached)
• Increasingly bad horizontal synchronisation after a while. Running strokes in picture.
• No colour. after a while.
• Moire effect on some channels. A good picture is established by programme/channel switching. (part of circuit diagram displayed)
• Reduced vertical and horizontal size. (with circuit diagram extract)
• Colour output stage ICs fail repeatedly. (with circuit diagram extract)
• Insufficient PSU secondary voltages.
• PSU pulsates. Lamp test OK. (extract of circuit diagram attached) (BLAUPUNKT - 7669801 information)
• Not enough picture height after removing or fitting the teletext components.
• Hum in audio. in standby. (picture attached) (service info for BLAUPUNKT -7669801)
• Power supply hiccups. No hiccups when deflection plug is disconnected. (picture attached)
• No audio, not on AV mode either.
• No channel storing.
• Standby LED OFF. Voltage at collector of line transistor pulsates from 60V to 70V, constantly and with noise.
• Jagged lines move across the picture in the middle. (with circuit diagram extract) (service info for BLAUPUNKT -7669801)
• Focus problems. Blurry picture.
• No analog values on RC. Program switching OK.
• No picture or sound. Data BUS disturbed. (with circuit diagram extract)
• Digital adjustment of the line frequency and the line phase in multistandard and on appliances converted to multistandard.
• Colour flickers (intermittently).
• Snow in picture.
• If too much contrast, then images become in bright areas unfocussed.
• Horizontal collapse. (7669801 tip from BLAUPUNKT)
• If flyback lines in top part of picture, picture amplitude is reduced and lines disappear. On stations with TXT the lines are especially bad. (picture attached)
• Shock from front when switched ON or OFF.
• Adjustment after erasing memories of average analogical values of brightness, volume, contrast, shade etc...
• No sound. Low ticking when volume is increased.
• Appliance should go into "AV" ("1 AV") position at switch on.
• Black screen.
• Tripping. (+ extract of circuit diagram)
• Dead. Very weak hiccups.
• Appliances with 1 or 2 Euro-AV jacks.
• No picture. When G2 pressed picture covers half of the screen. +D makes 25V. (extract of circuit diagram attached)
• OSD wobbles with audio oscillation. (extract of circuit diagram attached) (service info for BLAUPUNKT -7669801)
• Fixing FBT cables and Focus.
• Line phase adjustment.
• Flyback line.
• Line frequency adjustment.
• Blurry picture.
• No picture. (extract of circuit diagram attached)
• Crackling audio. at start-up.
• No start-up. intermittently. Shuts down.
• In PIP to change small picture position in the corners and frame.
• No picture. White raster. "P100" message displayed at top. (+ extract of circuit diagram)
• Horizontal linearity fault.
• No start-up from standby with RC.
• No display, appliance only has white picture, AV is ok. Tuner ok, IF ok, microprocessor ok despite this no SCL and SDA data can be measured. (part of circuit diagram displayed)
• Changing channel raster for multistandard TVs or TVs modified in L standard which have to be connected to a French cable network system (CCE II channels).
• No switch on from standby when using front controls. (with circuit diagram extract)
• Horizontal stripes.
• Program name rolls diagonally on screen.
• RC IR DATA PROGRAMMER IDP1 or IDP2: automatic programming mode "HP".
• No reception.
• Intermittent switch over function with audio oscillation. (with circuit diagram extract)
• Line tearing. (picture attached)
• Spot does not disappear at switch off and smears tube. (with circuit diagram extract)
• No RC functions (after a while).
• Slow start-up.
• Dead. (+ extract of circuit diagram)
• Single digit channel display from 1-9.
• No picture. Audio OK . (with circuit diagram extract)
• No picture. No audio (intermittently).
• No RC functions. in TXT.
• End stage-IC (TEA5101A) is S/C and causes damage of R793 (value cannot be recognized).
• White flyback lines on upper part of picture. (+ extract of circuit diagram)
• Reduced vertical deflection. (with circuit diagram extract)
• Horizontal lines appear in picture in the rhythm of sound (hum in picture) at high volume. (+ extract of circuit diagram)
• Lines in picture. on the left (via AV). (picture attached)
• No start-up. Loud noise. (+ extract of circuit diagram)
• Reduced picture height. If it is adjusted, bright flyback lines appear on top of picture and picture is distorted.
• No start-up from standby.
• Grey picture with flyback lines after switch on. Display OK. Drifting clarity. Switches to standby.
• Black stripes at maximum volume. (with circuit diagram extract)
• No picture. intermittently.
• Snow in picture. intermittently. (picture attached)
• Input of averages at memory loss of analogue values.
• No picture. Sound via AV OK.
• No picture (via AV).
• Switches to protection mode. (+ extract of circuit diagram)
• Start up in "AV", (1AV).
• Loss of colour after switching channels.
• Switches to protection mode (intermittently). (part of circuit diagram displayed)
• Volume control is erratic in lower control range. (+ extract of circuit diagram)
• No picture. Blank raster. No audio. (with circuit diagram extract) (7669801 BLAUPUNKT repair tip)
• Transposition of CCIR channel band 1 (sound at + 6.5MHz) to L standard (sound carrier at - 6,5 MHz).
• Automatic programming (HP) for dealers with the IR autoprogrammer FZ900G1.
• Picture appears and milky screen.
• Flyback lines. at top. (part of circuit diagram displayed)
• Flickering picture. Colour fault. (extract of circuit diagram attached) (7669801 BLAUPUNKT repair tip)
• Intermittent colour when zapping.
• No TXT.
• No TXT. Black picture. P100 in picture.
• After start up, display shows A1. Does not go beyond channel 9. (7669801 tip from BLAUPUNKT)
• Poor horizontal synchronisation. in TXT.
• Beam spot suppressor is defective. (picture attached)
• Arc on tripler level.
• Programs can only be switched on up to 9, after AV1... appears May occur after changing memory IC.
• Vertical line. (extract of circuit diagram attached)
• Insufficient light spot suppression when switching off with mains switch.
• Alignment of line frequency and line phase (lateral image shift) for multi-standard sets and sets converted for multi-standard usage.
• Volume increases and decreases intermittently. Switches to TXT mode.
• Stuck in standby. No button operation. (with circuit diagram extract)
• White horizontal interference stripes in picture. Pulsates regularly at approx 3-4 Hz. Ok in AV.
• Does not switch to standby. (extract of circuit diagram attached)
• No picture, only green stripes which run through from top to bottom. No sound.
• Appliance switches unintentionally to stand-by, especially when switching on.
• OSD of wake up alarm (yellow box with time of day), although this has not been programmed.
• Bright horizontal line, sound OK. (with circuit diagram extract) (7669801 tip from BLAUPUNKT)
• Jagged edges run from the top to the bottom. Intermittently no sync when cold and loud noises (picture attached)
• A 1 appears after switch on.
• Squealing noise. (part of circuit diagram displayed)
• No audio. via tuner.
• No sound. Operates OK. Flash damage. Hieroglyphics in display. (with circuit diagram extract)
• How to store personal values.
• BUX 90 blows if 624 blows. (picture attached)
• Picture is like with a poor aerial. Level OK but double picture, approx. 3 cm shadow.
• Switches on with double pulse. (extract of circuit diagram attached)
• E/W fault. Line tearing. No E/W correction. (part of circuit diagram displayed) (7669801 tip from BLAUPUNKT)
• Poor RC sensitivity.
• Changing over to the differing French cable channel raster.
• No picture. No audio. intermittently (via SCART).
• No picture, no sound. Channel display is always on 00. (7669801 tips)
• No audio. only on certain channels. No colour.
• No HV. (extract of circuit diagram attached)
• No reception of the CCIR high channels.
• No E/W correction. (with circuit diagram extract)
• Vertical size varies. intermittently.
• Vertical jitter. Stretched picture. Horizontal lines.
• Horizontal line. No vertical deflection. (extract of circuit diagram attached) (7669801 BLAUPUNKT repair tip)
• Excessive horizontal size. (picture attached) (BLAUPUNKT - 7669801 information)
• Squealing noise. after start-up. LED blinks . Switches to standby. (extract of circuit diagram attached)
• Picture bounces, shifts and is black and white. Mostly no sound. (+ extract of circuit diagram)
• All functions OK until TXT button is pressed. Then appliance stops responding to commands. (with circuit diagram extract)
• No picture. Displays channels. Sound whistles, varies and becomes very loud.
• Occasionally hum in standby position. (with circuit diagram extract)
• No picture (intermittently). AV OK .
• Automatic switch over to protection mode. Increased beam current protection. (7669801 tip from BLAUPUNKT)
• All vertical lines are dented or torn after switch on (when cold). (+ extract of circuit diagram)
• Horizontal white line. (extract of circuit diagram attached) (7669801 BLAUPUNKT repair tip)
• No horizontal deflection.
• Dead. Display OK .
• No MONO audio.
• How to obtain two AV positions. (service info for BLAUPUNKT -7669801)
• Only AV at start-up.
• No picture with intense chirping noise or picture appears only after 2-3 mins and chirping sound disappears. (extract of circuit diagram attached)
• BU508 defective. (+ extract of circuit diagram)
• Station name - (station contraction -) OSD: without/a short time after each programme change/permanent.
• PSU pulsates. Slow start-up. intermittently. Squealing from PSU. (part of circuit diagram displayed)
• No SCART switching AV1 AV2.
• No brightness. Audio OK . (with circuit diagram extract)
• Trips. (extract of circuit diagram attached)
• S-channels and UHF do not function. (extract of circuit diagram attached) (service info for BLAUPUNKT -7669801)
• No switch off from standby.
• Slow start-up. Clicking noise. (picture attached)
• White screen. Flyback lines. No audio. after a few seconds.
• No raster.
• Picture contracts with variation in sound. (extract of circuit diagram attached) (BLAUPUNKT - 7669801 information)
• Picture rolls. Lines in picture. (extract of circuit diagram attached) (service info for BLAUPUNKT -7669801)
• Line output transistor fails repeatedly. (extract of circuit diagram attached)
• Reduced vertical size. after warm-up. (with circuit diagram extract)
• No start-up. Smokes.
• Impedance adjustment: TXT.
• Rhythmic chirping.
• Switches on. Display functions, then pulsates 3 times and switches off.
• Logo cannot be removed from screen.
• Bright portions are blurred on scenes with strong contrast. Loud crackling at switch off.
• For repair works, the set must not switch off 10 minutes after closedown or in case of a station breakdown. This state cannot be stored.
• No synchronisation. Horizontal roll. Vertical roll.
• No picture. No audio. Display OK .
• Entry of mean values (brightness, contrast etc.).
• PSU pulsates. at start-up. LED blinks . No functions.
• Shuts down. after start-up.
• Switches on. No deflection. Display shows program number. Sound ok.
• No synchronisation.
• BU HE fails after a short time (overheated).
• Horizontal, white line one third of the way up the picture. Raster OK. Video on scart. Sound OK. No picture via AV.