STUDIOT28 / BAUR [TV]

• One colour missing or excessive.
• Starts up after approx 15 secs.
• StandBy LED lights up. Appliance does not start.
• Abnormal sound when started up from standby and then goes back to standby.
• Standby lamp flickers.
• No colour. intermittently. (with circuit diagram extract)
• The line transformer is defective. (extract of circuit diagram attached)
• Ondulating lines.
• The picture framing has been shifted vertically. (extract of circuit diagram attached) (STUDIOT28 tip from BAUR)
• The picture is delayed.
• Adjusting the cut-off and the black value.
• No start-up. PSU pulsates. (with circuit diagram extract)
• No start-up. No display.
• NTSC-video standard could not be processed with 4.43MHz colour carriers and 5.5MHz sound carriers. This relates to appliances (chassis C90B), which were supplied up to 02.88.
• Colour fault.
• Tuning of the cathode tube board: R376 (560ohm/U3371).
• Picture scrolling down slowly from the top to the bottom of the screen.
• In AV mode picture "slips" 10cm to the right.
• Adjusting the vertical amplitude, linearity and symmetry.
• Does not shut down.
• Dark screen. Audio OK .
• No TXT. Ticking noise. in standby. (picture attached)
• Slow start-up. when cold. (extract of circuit diagram attached) (STUDIOT28 tip from BAUR)
• Poor TXT. (STUDIOT28 tip from BAUR)
• NTSC-Video standard.
• Whistling. Wavy picture.
• The display is distorted (unclear).
• No STEREO.
• Tripping. (STUDIOT28 tip from BAUR)
• Black screen. Flyback lines.
• Low contrast. (STUDIOT28 tip from BAUR)
• R502 blows. (+ extract of circuit diagram)
• Snow in picture.
• No picture. No audio. (+ extract of circuit diagram)
• PSU starts up too late, rattle in the loudspeakers. Ok after 1-2 min.
• Diodes 543, 544 and 545 go after a time defective. (+ extract of circuit diagram)
• Phase error.
• Mains switch starts up line output stage briefly. Only whistling from speakers after that. Display OK.
• Whistling from PSU. at start-up.
• No tuning. (part of circuit diagram displayed)
• Line tearing.
• Instructions as required in SERVICE mode, on appliances with a flat control unit.
• No picture. Bright raster. No audio. Clock OK .
• Whistling in normal sound background, which varies if sound is increased or reduced.
• Teletext interference.
• No colour. (part of circuit diagram displayed)
• Intermittent picture drop outs, increase until picture is only bright (only white). Switches off (BCL) or becomes normal again.
• Yellow portions of the picture in SECAM.
• After being switched on the picture becomes blurred, no adjustment of the colour oscillator possible. (extract of circuit diagram attached)
• Adjusting the Y delay. (STUDIOT28 tip from BAUR)
• Picture is negative intermittently and rolls. No sound.
• No start-up. Standby LED lit .
• Distorted sound, fails intermittently or becomes louder.
• Loud popping noise at start-up. Delayed start-up.
• E/W fault. after warm-up.
• No recording through the scart socket.
• No picture or also vertical picture fault. Sound is set to 0.
• Service position of the chassis.
• No TXT switching is possible. TV functions OK.
• Adjustment instructions.
• Picture remains dark sometimes and sound disappears at switch over, if appliance is connected via AV-socket (Sat-Receiver). After switch off OK again.
• Coloured lines. at top. (picture attached)
• No signal.
• U27 alteration.
• Low audio. (part of circuit diagram displayed)
• Green picture. Horizontal lines. (BAUR - STUDIOT28 information)
• Adjusting the trapezium correction.
• Switches off by itself. intermittently.
• Cycles on/off.
• One channel is quiet or has no sound at all. (+ extract of circuit diagram) (BAUR - STUDIOT28 information)
• The fusible resistor R506 fails. (extract of circuit diagram attached)
• Horizontal waves which decrease as the applinace heats up.
• Colour spot. (service info for BAUR -STUDIOT28)
• Double muting. After changing programme and especially when changing standards, a second picture and sound muting may appear for a short time.
• Secam does not function. (picture attached)
• Negative picture. (part of circuit diagram displayed) (BAUR - STUDIOT28 information)
• Cannot be turned off. If mains switch pressed for a longer period, appliance starts. cannot be turned on and off via RC. (picture attached)
• Whistling from PSU. (extract of circuit diagram attached)
• Picture becomes darker and at the same time has shifted to right. Sound OK.
• PSU does not start up properly. (BAUR - STUDIOT28 information)
• No picture. via AV.
• No picture, occasionally there are interference lines. (+ extract of circuit diagram)
• Hum in audio. (part of circuit diagram displayed) (STUDIOT28 tips)
• Electrolytic failure TDA4600. (picture attached)
• Distorted picture. No adjustment possible . (extract of circuit diagram attached) (STUDIOT28 tips)
• Picture regularly blacks out, sound and display o.k. Cuts out more often in cold condition, line transformer then starts generating.
• Beam limiter faulty (picture attached)
• The line tips over. (extract of circuit diagram attached)
• Picture too big. (picture attached)
• Double vision and sound intermittent (double mute). (STUDIOT28 tip from BAUR)
• No start-up. Standby LED does not light.
• No E/W correction. (STUDIOT28 tip from BAUR)
• Switch-off crackle can be heard in the headphone.
• Picture is grainy.
• Hums when turned on. Oscillates only later (about 1/2 min).
• During SECAM the colour flickers. (with circuit diagram extract)
• Lines at the picture's edge. (+ extract of circuit diagram)
• Channel 35 does not synchronise correctly.
• VT service mode.
• Crackling noise can be heard in the background. (part of circuit diagram displayed)
• Table-Option-Byte.
• Switches off by itself. intermittently.
• Adjusting the operating voltage. (STUDIOT28 tips)
• No picture. No sound. PSU oscillates. Standby LED lights. LED switches off after start-up, then switches on again.
• After changing the vertical IC TDA8175 the picture centre goes bright horizontally.
• No audio. No picture. (part of circuit diagram displayed)
• Horizontal stripes in picture and approx 10kHz whistle from loudspeaker and chassis.
• Whistling. (BAUR - STUDIOT28 information)
• Appliance cannot be switched into standby. Screen and display are dark. Despite this the appliance is working.
• Slow start-up. (extract of circuit diagram attached)
• The final line stage does not oscillate. (extract of circuit diagram attached)
• Enter service mode. (STUDIOT28 BAUR repair tip)
• No direct selection of L-Secam channels.
• Picture size and E/W deflection change depending on the brightness (slight hourglass effect). (+ extract of circuit diagram)
• LOPT failure. (picture attached)
• TV starts with approx. 2-3 secs delay, some high frequency noise can be heard.
• Jitter in vertical linearity, small black line in picture.
• Adjusting the switchover point.
• Picture becomes black via AV1 after short while.
• Distorted and wobbly sound and intermittently drops out.
• The picture is too big, there is too little high voltage present.
• Low/high frequency noise in speaker.
• Lines in picture. (picture attached)
• Adjusting the horizontal amplitude, -position and -blanking.
• The line is distorted. (+ extract of circuit diagram)
• No start-up. PSU pulsates. (with circuit diagram extract)
• U27 voltage supply is s/c. (+ extract of circuit diagram)
• Brightness varies. (service info for BAUR -STUDIOT28)
• Appliance remains on standby. Standby dot goes OFF and then ON. (with circuit diagram extract)
• Picture moves from side to centre and overlaps. E/W fault. (picture attached)
• No function, flash-over on line transformer.
• No sound, slightly distorted sound when volume is fully turned up.
• No audio. No picture. (+ extract of circuit diagram)
• Display shows "AH". No image. Sound OK. (+ extract of circuit diagram)
• Black horizontal line in image. (picture attached)
• Moire-interference.
• Dead. (STUDIOT28 tips)
• No colour. at top.
• Does not start. LED is lit. LED goes out when switched on via RC.
• Picture cuts out. Squeaking sound.
• Focus adjustment.
• Vertical foldover. at top. (part of circuit diagram displayed)
• Fine, black lines in the picture. Twitching in the vertical line. (part of circuit diagram displayed)
• Difficulty starting up. After a while does not start at all.
• Line switch failure. (picture attached)
• Screen does not become brighter. Colour detectable in background only.
• E/W fault. (service info for BAUR -STUDIOT28)
• When switching over channels appliance begins to whistle (loudspeaker). If there is a fault appliance cannot be operated. Picture turns white with flyback lines. (with circuit diagram extract)
• Cramped verticals. (picture attached)
• No reception.
• No sound. Only low and distorted at full volume .
• Display shows "AH". (+ extract of circuit diagram)
• Excessive brightness. (part of circuit diagram displayed) (service info for BAUR -STUDIOT28)
• Picture appears immediately on band III or 1 channel on band III. (extract of circuit diagram attached)
• Vertical collapse. (with circuit diagram extract)
• 6.5MHz sound.
• Cannot be switched in standby. Dark screen and display.
• No TXT. Ticking noise. in standby. (BAUR - STUDIOT28 information)
• Dead, display shows 88
• Bright picture. Flyback lines. (+ extract of circuit diagram)
• Synchronisation fault.
• Interference of the matrix (audible scrambling in the earphones).
• Stereo changes over. (part of circuit diagram displayed)
• Adjusting the pilot tone filter.
• Insufficient height, about an inch at top of picture.
• Picture disappears in scart. Picture ok via the aerial.
• No E-W raster control
• TV standards. (STUDIOT28 tips)
• Picture becomes grey after operating for some time, sound has then disappeared. Picture and sound only occur again by switching off and on again with the mains switch.
• No NTSC. (extract of circuit diagram attached)
• White screen. Flyback lines. (extract of circuit diagram attached)
• Operation unit type variation.
• R504 becomes unsoldered. (extract of circuit diagram attached)
• Excessive horizontal size. No E/W correction.
• Set dead with all the outputs from the power supply at a low level.
• E/W fault. (with circuit diagram extract)
• Diagonal lines. (extract of circuit diagram attached)
• Loud audio. (extract of circuit diagram attached)
• No reception.
• Stuck in standby. (part of circuit diagram displayed)
• Noise in picture. Vertical lines on all channels.
• PSU doesn't start up. Low clattering.
• Flyback lines. at top.
• The stereo display is constantly lit. (extract of circuit diagram attached) (STUDIOT28 tip from BAUR)
• Adjusting the colour subcarrier oscillator.
• Volume uncontrollable. (part of circuit diagram displayed)
• S200AF fails repeatedly.
• Does not switch to standby.
• Line deflection transistor fails after approx 3 hours. Picture geometry OK
• Coloured lines. on the left.
• Loudspeaker cracking at start-up.
• Mains transistor T623 (BU2000AF) becomes defective after few days.
• No HV.
• Picture has intermittently shifted to the right by 5cm after program switchover.
• Picture shifted to the left and right at switch on.
• No HV. (extract of circuit diagram attached)
• The video-text system starts up automatically (channels 30-40). (picture attached)
• Adjusting the E/W amplitude.
• Interference lines during PAL-reception (extract of circuit diagram attached)
• SECAM is distorted. (part of circuit diagram displayed) (STUDIOT28 BAUR repair tip)
• Shuts down. intermittently.
• Horizontal position adjustment - TXT SERVICE mode.
• The tuner has change over problems.
• Appliance indicates stereo with mono transmitters and switches to a kind of inter carrier hum.
• Picture shifted horizontally.
• IC211 failure (lost storage). (with circuit diagram extract)
• 5 volt supply varies
• The deflector hums.
• Solarized picture or white screen with flyback line intermittently.
• Adjusting the white value.
• Instructions to change the chassis.
• Jittery lines.
• White lines in the top part of the picture, which disappear after approx. 5 min.
• Only one channel can be received.
• Video operation through the TV is not possible.
• Interference on picture and vertical bands on all the channels.
• During SERVICE mode there is no storage possible. (extract of circuit diagram attached)
• No picture (intermittently).
• No picture. Squealing from PSU. (with circuit diagram extract)
• No picture. No sound. Display on 01.
• Distorted audio. (part of circuit diagram displayed)
• The horizontal deflection transistor S2000 blows after testing for a few days.
• The picture is weak, too dark, blurred and only bright for a short time. (part of circuit diagram displayed)
• Chirping.
• Low chirping when starting with the RC. (+ extract of circuit diagram)
• Black picture via Scart after 10 mins. OK after restart.
• Line pulling at top of picture
• Hum at switch on. Starts up late, after approx 1/2 min.
• Enter service mode.
• Volume varies. (with circuit diagram extract)
• Assembling pins (Scart plug/sockets).
• Flyback lines. (part of circuit diagram displayed)
• No audio. via SCART. No picture. via SCART.
• Dark display. Band change and TXT function ok.
• When starting-up from standby, sound is motorboating (no picture) and the set goes back to standby.
• Dark picture. intermittently. (with circuit diagram extract)
• No functions.
• No or poor vertical deflection.
• Picture regularly blacks out, sound and display o.k. Cuts out more often in cold position, line transformer then starts generating.
• Red coloured lines in the picture. (picture attached)
• After changing from SECAM to PAL there is sometimes no colour. (with circuit diagram extract) (STUDIOT28 tip from BAUR)
• No picture. intermittently.
• Wavy moire in picture via RF and Scart. (STUDIOT28 BAUR repair tip)
• No start-up from standby. (part of circuit diagram displayed)
• Standby LED lights up. Crackling is audible if switched on with RC.
• VT service mode.
• NTSC video PB.
• Adjusting the grey value.
• Reduced vertical size. (with circuit diagram extract)
• Image "swimming", vertical lines ring, image bounces. If operation via scart everything OK. (extract of circuit diagram attached)
• All secondary voltages are too high. (+ extract of circuit diagram)
• Lack of height, about an inch at the top of the picture. (part of circuit diagram displayed)
• Picture jumps intermittently. Cramped at bottom.
• Standby flashes then goes out.
• Dark picture. Sound OK. RC reacts, possibly AH in the display.
• Tuner improvement.
• Switches continuously to dual channel and stereo.
• How to store standard values, brightness, contrast.
• Wide, green stripe on the left from the top to the bottom of the picture.
• Functions for approx 2 mins, then picture begins to flicker and drops out. Sound OK. Same error by TXT.
• Horizontal amplitude adjustment in SERVICE mode is not possible.
• Picture goes light and dark
• Crackling audio. (+ extract of circuit diagram)
• The programme switches over.
• Picture wobbles in the corners (line tearing).
• 2 horizontal bars in picture, about 3" thick each.
• Starts up poorly from standby, therefore sound crackles. (picture attached)
• Transistor T658, in power supply, is defective.
• Transistor set.
• No picture. Audio OK . (part of circuit diagram displayed)
• The top half of the picture has no contents but the bottom half is correct. (picture attached)
• Reduced horizontal size. (+ extract of circuit diagram) (service info for BAUR -STUDIOT28)
• Wavy vertical lines across the screen.
• Picture disappears, leaving a dark screen. Sound normal.
• Picture muting. Audio crackles. Occurs when picture content changes from dark to bright. (+ extract of circuit diagram)
• Line output stage doesn't start up.
• Switches off by itself. intermittently. (part of circuit diagram displayed) (STUDIOT28 tip from BAUR)
• No picture. (with circuit diagram extract)
• The power supply unit does not start up or runs at too high speed. (picture attached)
• TV-BTX kit.
• Shuts down. after start-up. (with circuit diagram extract)
• Comes on for a short time.
• Reduced vertical size.
• Picture distorts from one end towards the middle and cuts out again. E/W fault. (+ extract of circuit diagram)
• No start. Stuck in standby. Plop in loudspeaker. (extract of circuit diagram attached)
• Impossible to go into standby. Screen and display are dark. Functions in spite of these faults.
• PSU test.
• No vertical deflection. (extract of circuit diagram attached) (service info for BAUR -STUDIOT28)
• Fuse S589 blows. (part of circuit diagram displayed)
• Colour spots in the picture. (with circuit diagram extract)
• Poor resolution.
• Shuts down. after start-up.
• Matrix adjustment.
• S-VHS has no colour.
• Horizontal stripes.
• Dark picture.
• Colour flashes in SECAM.
• Noises.
• Malfunction during TXT operation.
• Vertical lines. (extract of circuit diagram attached)
• Poor picture. One colour missing or excessive.
• Wavy lines run vertically through.
• The primary side of the power supply unit does not function. (with circuit diagram extract) (STUDIOT28 tips)
• Dead. Standby LED lit . (part of circuit diagram displayed)
• Image rolls vertically when cold. Composite colour video signal (CCVS) OK. No sound. (part of circuit diagram displayed)