KVDX27TD / BAUR [TV]

• Intermittent loss of picture on changing channels, when the channel is changed the screen is blanked in the usual way and the new channel selection number is displayed, but the screen stays blank. (part of circuit diagram displayed)
• Only snow on channel 2 and 3 (band VHF1).
• Set stuck on channel 11 and no response to either the front controls or the remote control unit.
• No picture. Audio OK . (picture attached)
• Tuner IF AGC fault. Distorted picture unable to lock. (picture attached) (BAUR - KVDX27TD information)
• Black, horizontal lines in the picture.
• A humbar appears in the picture when there is low brightness. Intermittent picture roll. (KVDX27TD BAUR repair tip)
• Bright picture. Flyback lines. (with circuit diagram extract)
• Automatic channel search does not stop. Picture is black/white in operation.
• No picture. No channel storing. (+ extract of circuit diagram)
• TV OK after a few days at rest then after 2 minutes power supply crackles and stops.
• Blank screen.
• Blank raster. Flyback lines. (picture attached)
• Line tearing. (+ extract of circuit diagram)
• No picture (intermittently). (with circuit diagram extract)
• Intermittent colour.
• Intermittently no picture, no sound at switch over. Picture and sound OK via AV.
• Switches on, EHT present momentarily then set switches off. (picture attached)
• Negative picture when cold and/or lines on all channels.
• Occasionally picture is distorted and there is no contrast. (+ extract of circuit diagram)
• After operating for a few minutes the TV switches to black and white then makes a rumbling noise. (+ extract of circuit diagram)
• Switches off straight away again after switching on. (picture attached)
• Power supply does not start up, nor with lamp on 135V. (extract of circuit diagram attached)
• No signal. via RF output.
• Dead. after a few seconds.
• Picture drifts on all channels. (+ extract of circuit diagram)
• No horizontal deflection. (part of circuit diagram displayed)
• Switches to PAL after a long time or no sound and no RC.
• Vertical lines have shifted zigzag to the left and right after warming up.
• No picture. LED flashes twice . (KVDX27TD tips)
• Trips then attempts to start three times. (extract of circuit diagram attached)
• Intermittent loss of picture/sound. Fault could be produced when main panel flexed. (picture attached)
• Defective field linearity.
• Intermittently dead. (with circuit diagram extract)
• To confirm that the power supply is working.
• Picture disappears leaving only channel number. (with circuit diagram extract)
• Shuts down. after start-up. (KVDX27TD tips)
• D803 heats up and is leaky. (+ extract of circuit diagram)
• Poor linearity or geometry. Frame linearity fault. Usually only occurs in sets which are more than two years old. (with circuit diagram extract) (KVDX27TD tips)
• Mains fuse blows instantly. (part of circuit diagram displayed)
• No or poor sync.
• Noisy transformer. Standby noise from srt. (part of circuit diagram displayed)
• M58655P blows at switch on. 5V ok, -33V slight pollution on pin 2, ok on other side of R062. CLOCK and DATA ok.
• No synchronisation.
• Horizontal jitter. Picture rolls. intermittently (after warm-up).
• Black picture, OSD OK, works fine after a while. No fault when cold.
• Picture is missing or video level reduction. (part of circuit diagram displayed)
• PSU does not start up. No standby. Degausssing is audible.
• Shuts down. intermittently. (KVDX27TD BAUR repair tip)
• No brightness. intermittently.
• High voltage is built up, then goes off immediately.
• Picture rolls. Poor picture. (+ extract of circuit diagram)
• No functions. after lightning strike. (+ extract of circuit diagram)
• Picture goes dark then disappear but OK when warm.
• Switches to standby. after a while.
• No start-up from standby.
• Stuck in standby. LED blinks .
• The appliance intermittently drifts out of frequency.
• Distorted picture. Low contrast. Fault occurs intermittently. .
• Vertical fault. Reduced vertical size. after a while.
• Reduced vertical size. when cold.
• Loss of picture and/or sync. (part of circuit diagram displayed)
• Takes too long to start up. After approx. 10 min. starts up suddenly.
• No synchronisation. intermittently. (extract of circuit diagram attached)
• No synchronisation. when cold.
• No function. Pulsates and standby LED lights up approx. 3 times, then no function.
• Intermittent picture roll. Then picture is negative and occasionally no picture.
• Various dry joints in the HF unit, on the base chassis in the PSU, of the line output stage, on the voltage stabilising ICs.
• Small screen, only 10cm. (KVDX27TD BAUR repair tip)
• Excessive horizontal size. Pincushion distortion. (KVDX27TD BAUR repair tip)
• Motorboating noise from speakers. in standby.
• Intermittent drift. (service info for BAUR -KVDX27TD)
• Green OSD, streaking.
• Faint/intermittent picture. (extract of circuit diagram attached)
• Flickering colours. Flickering picture.
• Dark screen and no sound in UHF and negative picture in VHF after working for a few hours or days.
• G2 voltage missing.
• Shuts down. after a few seconds. No LED lit.
• Picture ok on switch on but no text after a few minutes. Picture goes to black raster. (+ extract of circuit diagram)
• Reduced vertical deflection. Poor vertical linearity.
• Searches for channels continuously. intermittently.
• No HV. (BAUR - KVDX27TD information)
• Reduced vertical and horizontal size.
• Good power supply 135V, 14V and 7V. No sound, no picture, IC001 has been changed. Pin 16 3V instead of 0V Q606 and Q605 0.6 on the base.
• R624 is unsoldered. No obvious s/c. Primary HT is ok. (with circuit diagram extract)
• Brief HT after switch on then switches off.
• Intermittent TXT contrast variations.
• Goes to black and white, sound shifts and groans, similar to tuner drift.
• Dead. Trips. (+ extract of circuit diagram)
• Transistor (2SD1548) in power supply S/C.
• No reception after approx. 5 mins after switch over. Search is on UHF end. Program ok at switch on.
• The PSU hiccups constantly. (part of circuit diagram displayed)
• Noise bar. (with circuit diagram extract)
• No picture and no sound. Channel LED lights up. Brightness present when pressing control key. Pattern OK via scart. It sometimes re-starts. No sensitive to shock.
• Intermittent voltage at secondary PSU.
• Picture appears slowly. Audio OK .
• Blue picture. Flyback lines.
• Dark picture. Program display available. No reaction either to RC and to control panel.
• Dark picture. OSD and TXT OK .
• No RC functions. (+ extract of circuit diagram)
• Tuner drift in frequency. Channel search is impossible. CTV still indicates auto, channels run through but no memory.
• Synchronisation is poor, field roll and drifting AFC. (extract of circuit diagram attached)
• Automatic tuning problem. Not stopping in search, may also drift on the stations that are in the memory, although OK at channel change. (extract of circuit diagram attached)
• Flickering horizontal lines.
• Approx. 2cm of picture are missing on the top edge. Stripes with bright background (linearity fault).
• The appliance makes a noise during standby. (picture attached)
• No picture. Sound ok. CRT heaters lit. (picture attached)
• Reduced vertical size. (picture attached)
• Drifs off tune, search tunes up but not down.
• Horizontal jitter in picture (twitched picture) and sometimes vertical sync dropout after warming up.
• Functions correctly for 10-15 mins, then at channel change screen becomes black and sound is absent. OK via scart.
• No NICAM. (KVDX27TD tips)
• After pressing main switch, PSU makes 4 attempts to start and then stops.
• Fizzling at start-up. Switches to standby.
• LED flashes for a few seconds then appliance goes dead. (part of circuit diagram displayed)
• Vertical collapse. intermittently.
• R807 o/c. D803 s/c. Value of R807 and D803.
• No subtitles with the "Subtitles for the hard of hearing" decoder.
• R807 burnt.
• Impossible to receive L standard without thermal tube noise. B/G standard is received but search does not stop.
• Picture severely cramped at the bottom of the screen and stretched at the top. (extract of circuit diagram attached)
• When warm no sound or video. VC still 31V on the tuner, RCU does not work. When cold ok again. IC001, 002, 003, 501 have been changed. (KVDX27TD BAUR repair tip)
• Channels slightly drift off tune after short time, then noise in sound and no colour. (service info for BAUR -KVDX27TD)
• O/W is defective.
• Programming the basic values after exchanging the memory IC SDA 2546
• Service information. Details of nicam adaptable sets.
• Horizontal roll.
• Frame output chip blown repeatedly.
• Intermittent loss of video preceded by a broken up negative picture.
• LED lights up and then switches off when switching to standby. Appliance does not start up again unless it is completely switches off for 3 minutes. Functions OK if standby switching is not used. (service info for BAUR -KVDX27TD)
• Volume and muting controls not responding but OSG show operation correctly.
• No raster.
• Picture too small. at top.
• Dead. after lightning strike.
• Shuts down (after a few seconds).
• Drifting. (with circuit diagram extract)
• Excessive brightness. Flyback lines. (part of circuit diagram displayed)
• Picture and sound cut out after a few mins when the channel no is displayed, returns to normal a little later. Appear not to be any defective solder joints. (+ extract of circuit diagram)
• Black screen. Displays "N" for programme. Via scart also.
• Cramped raster. (extract of circuit diagram attached)
• No brightness.
• Circuit protectors PS601 and PS602 are open circuit.
• Stretched field scan from centre to top of screen with no field scan from centre to bottom.
• Loss of picture after some time when switching channels. (extract of circuit diagram attached)
• Voltage switches on for a short time and switches off again. (extract of circuit diagram attached)
• Green picture. Retrace lines.
• Picture disappears after approx 2 mins. First colours start to roll and sound disappears. (with circuit diagram extract)
• Trips. at start-up.
• Destroy of R807.
• Intermittently not switching on from standby. When channel is selected standby light goes out and the set becomes apparently dead, although ht is still present. (picture attached)
• Tripping.
• Reduced horizontal size. Pincushion distortion. (service info for BAUR -KVDX27TD)
• Flyback lines and preset brightness level is wrong. (extract of circuit diagram attached)
• UHF search is correct but no channel memory. (+ extract of circuit diagram)
• Dark picture. (with circuit diagram extract)
• Dark picture. after warm-up (intermittently).
• Poor linearity. at top.
• Switches to standby. at start-up. (KVDX27TD tips)
• Switches off by itself. after start-up.
• No start-up. Protection mode activated. (part of circuit diagram displayed) (KVDX27TD tips)
• Jagged picture. (part of circuit diagram displayed)
• Appliance not functioning, burnt R807. (+ extract of circuit diagram) (KVDX27TD BAUR repair tip)
• Arcing.
• No TXT. intermittently.
• Slow start-up. Negative picture. intermittently. (picture attached) (BAUR - KVDX27TD information)
• Excessive vertical size.
• No picture. (+ extract of circuit diagram)
• No oscillation at start up.
• Stuck in standby. (extract of circuit diagram attached)
• No picture. after warm-up.
• Pulse on the collector of the line power transistor but stops immediately. 135V is correct. Supplies in 15V. (part of circuit diagram displayed)
• When high brightness signal is received through the front Y/C socket, field synchronisation becomes unstable.
• Power supply starts up but immediately switches off. (+ extract of circuit diagram)
• Vertical fault.
• Screen is dark after switch on, after approx 10 mins it is blue with flyback lines and becomes brighter. After other 10 mins appliance functions faultlessly for 30 mins, then picture is completely bright with flyback lines.
• No G2 power supply.
• Picture size incorrect. Change in size of raster. (with circuit diagram extract)
• Lines in picture. (BAUR - KVDX27TD information)
• Impossible to memorize the channels, the other functions are normal. (part of circuit diagram displayed) (service info for BAUR -KVDX27TD)
• When TV switched off by ON/OFF switch, starts up again properly. If switched off by standby power supply cuts out. It takes 5 mins before it starts up again.
• Teletext is missing, page number only. (part of circuit diagram displayed)
• Shuts down.
• Red picture. Dark screen. after a while.
• Shuts down after approx 20 mins with standby light flickering. No RC operation. (service info for BAUR -KVDX27TD)
• Power problem. D board burnt around R614 and R653. B+ line and vent holes must be intact, and at least 5mm of print on hv line to srt. (picture attached)
• No picture. intermittently. Intermittent audio.
• No E/W correction. (picture attached)
• Resistor, diode, line transformer have been changed. TV functions for 5 mins, picture gradually turns red then nothing. When picture present, no sound. Resistor has burnt.
• Hum in audio. in standby.
• New program no. is displayed after program switch-over, but no reception, not even at scart socket output.
• White streaks on picture and no visual lock on channel.
• No aerial, ok in scart. Search ok but does not stop. When cold only some sound for 3 or 4 secs.
• Distorted audio.
• Brightness varies. Flyback lines. (+ extract of circuit diagram)
• Starts up. LED does not flash.
• Errors on vertical and horizontal picture.
• No or intermittent start-up.
• No horizontal synchronisation.
• No picture, no sound or fails when warm.
• Line in picture, at 1/3 from top of screen.
• Field striations across the top of screen.
• No functions. Standby LED lit .
• Trips.
• Burning smell. (+ extract of circuit diagram)
• No power supply on jungle-IC, no drive pulses on the line transistor.
• Switches off after 15 mins and can be switched on again only after 15 mins.
• Power supply trips approx 3 times, then goes dead.
• Poor focus.
• Appliance is dead, rise in EHT then the appliance breaks down. (picture attached)
• Picture takes longer and longer to come on. Come on instantly if A1 control is turned up or down.
• No volume control by RC and front panel but OSD works. (extract of circuit diagram attached)
• Appliance buzzes in standby. It is OK in operation.
• Drop out. (with circuit diagram extract) (service info for BAUR -KVDX27TD)
• Black screen.
• Defective On/Off LED. Loss of LED from standby. Cannot be started up again.
• No picture, only snow. (part of circuit diagram displayed)
• Drifts after a few mins. No search possible when fault present. (part of circuit diagram displayed)
• Poor tuning at switch on. Tuning OK after approx 30 secs.
• OSD is green. Streaking in picture.
• No power on AC. The majority of flyback transformers changed are not faulty.
• 4A fuse blows on PSU.
• At programming the stations brightness varies in the same time with blinking program display.
• Hiccups after a few mins (picture folds over). Power supply voltage seems to collapse. Continues to do so, nothing seems to become hot.
• Memory loss. after a few minutes.
• Standby LED on for 2 secs then switches off. No start up.
• Stretched field.
• Low brightness and orange coloured picture.
• Vertical roll.
• Bright red raster. (part of circuit diagram displayed)
• Loss of power supply.
• Switches off by itself. (BAUR - KVDX27TD information)
• No functions. (extract of circuit diagram attached)
• Low contrast. when cold. Focus problems.
• All (-) keys inoperative.
• Starts up at Power On then switches off immediately after. It takes 2 or 3 minutes to start up again. (service info for BAUR -KVDX27TD)
• Ocassionally no signal on screen. No thermal tube noise, no sound. Channel indication ok. In UHF search correct channel obtained but it disappears again after it has been stored.
• No audio. intermittently.
• Sound and picture disappear when hot. Only display remains at channel switch over. OK when cold.
• Picture runs through and is intermittently negative.
• No picture. intermittently. (with circuit diagram extract)
• No start-up (intermittently).
• Interference in TXT. Searches picture but random characters. Some lines OK.
• Incorrect tuning or goes to muting.
• Channels change suddenly or random OSD.
• Appliance goes dead after approx 1 second. (extract of circuit diagram attached) (KVDX27TD tip from BAUR)
• No picture channel. OSD OK.
• No vertical and horizontal sync. Lines only and picture running.
• Switches to protection mode.
• White line. at bottom.
• No + B on the tuner. (KVDX27TD tips)
• The whole picture was covered by fine,shimmering horizontal black lines. (picture attached)
• Poor convergence. (KVDX27TD tips)
• Jagged picture effect, the picture is broken into sawteeth or wriggles in a random way. Fault can be intermittent. (extract of circuit diagram attached)
• Sound becomes louder, sound crackles, OSD also changes.
• When the appliance has operated for a certain time a slight hum can be heard from the speaker. The volume varies on both mono and stereo. (KVDX27TD tip from BAUR)
• The tuner drifts out of tune after working for 5 minutes.
• No audio. No picture. (part of circuit diagram displayed)
• No vertical sync if picture has strong contrast.
• Streaks on picture, becomes dark and sometimes even switches off.
• Linearity fault. Upper section of picture is too wide and lower section compressed. (KVDX27TD tips)
• No picture and no sound. Red LED lights up when changing channel. Noise from appliance when switching TV off.
• At start up functions for a few mins then no reception. Functions normally via scart, all the functions are ok. No snow, no thermal tube noise, no reception. (picture attached) (service info for BAUR -KVDX27TD)
• White screen. Scart OK. At channel search, picture and sound are OK. After storing, picture white again and no sound.
• E/W fault. (with circuit diagram extract) (KVDX27TD BAUR repair tip)
• Vertical collapse. (+ extract of circuit diagram)
• Smearing in picture. Low brightness. (picture attached)
• Green component of picture varies or none at all. (extract of circuit diagram attached)
• Picture is distorted when brightness is adjusted. (Zoom effect).
• Picture and sound fail. (part of circuit diagram displayed) (service info for BAUR -KVDX27TD)
• After a while, picture becomes dark and dragged (like when it is out of adjustment). (extract of circuit diagram attached)
• No power supply (+290V is present). (KVDX27TD tip from BAUR)
• No picture. R807 (1K/1W) heats up.
• Channels change at random.
• Flickering, horizontal black lines over the picture.
• No horizontal synchronisation. No vertical synchronisation.
• When tuning after finding the desired channel, if you press the memory button everything disappears instead of fixing the picture.
• Tuner drifts after 10 mins and then fails after a short time.
• Black picture with programme indication after approx 15 mins. Snow briefly when switched from TXT to TV.
• Screen flashes with smearing then eventually goes blank. (with circuit diagram extract) (service info for BAUR -KVDX27TD)
• Dark screen. (with circuit diagram extract) (KVDX27TD tips)
• Standby LED lights up after a while. No switch on. (+ extract of circuit diagram)
• Dead, only standby LED flashes 2 times repeatedly. (KVDX27TD tip from BAUR)
• Horizontal lines. (+ extract of circuit diagram)
• Raster bowed at the sides, with only the left hand quarter picture showing. (part of circuit diagram displayed) (KVDX27TD BAUR repair tip)
• Poor linearity. at bottom. (KVDX27TD tips)
• Switches off by itself. after a while.
• EHT rises then falls, appliance goes dead.
• Occasional popping noise from loudspeakers.
• Switches off by itself. after a few seconds.
• Switches off. No standby display.
• Channel search ok in UHF and VHF but impossible to store channels. (+ extract of circuit diagram)
• Picture reduced vertically and horizontally. The remaining 2/3 is black. Sound OK.
• No picture. OSD OK .
• Picture fails or is distorted intermittently. Via scart OK. Knock sensitive.
• No picture. on the right. No E/W correction.
• Venetian blinds via AV1. Stripes when switching from one programme site to another.
• Scart plug 1 does not work. Neutral screen with symbol 1 displayed on screen during Canal Plus or when VCR is in PB. (KVDX27TD tips)
• Spontaneously goes to AV-2. (BAUR - KVDX27TD information)
• There is a problem with mono/stereo identification when receiving a stereo transmission (PAL B/G).
• PSU pulsates.
• R807 blows intermittently every couple of months on the G2 circuit.
• Distorted picture.
• Poor vertical linearity.
• New type of stand-off resistor.
• Snowy effect on all programmes.
• Sometimes channels run though and remain in PAL B-G. Controls ok when tuning. (part of circuit diagram displayed)
• No picture. Audio and OSD OK . (with circuit diagram extract)
• Station adjustment de-tunes intermittently, especially on program site 1.
• Negative picture. when cold.
• Red standby LED flashes constantly after switch on. If it is switched on with RC, LED goes out, but appliance does not start.
• No picture. Sound ok. Screen is red or sometimes red before picture failure.
• Horizontal line or black stripe in upper part of picture. Distorted vertical deflection.
• No response to RC: incorrect functions in VOL+ and PROGRAMME-. Picture appears slowly and vertical lines are warped. (picture attached)
• No sound or vision, tuning searches but no signal present. (extract of circuit diagram attached)
• No TXT. (part of circuit diagram displayed)
• No channel available after changing channel. Ok when appliance cold. (part of circuit diagram displayed)
• No vertical deflection.
• Fails completely or switches to stand-by and tries to start intermittently.
• Picture rolls. Dark picture. intermittently.
• White lines in the centre of the screen on unsynchronized channels.
• PSU does not oscillate.
• Chopper transistor S/C. (+ extract of circuit diagram)
• Distorted picture. Top is stretched, foldover at bottom. (KVDX27TD BAUR repair tip)
• Noise in stand-by mode. (part of circuit diagram displayed)
• No raster. No OSD. (+ extract of circuit diagram)
• Screen very white, scart is OK. Picture and sound ok in station search. After PB again completely white and no sound.
• Appears dead but blank raster if brilliance increased. (KVDX27TD tips)
• PSU chirps. LEDs flash.
• Trips once then dies.
• No reception.
• Intercarrier hum by bright picture.
• Linearity error.
• Picture fades out but comes back slowly with auto grey scale correction visible if hit.
• Reduced vertical size. at top. Flyback lines.
• Line output transistor fails repeatedly. (with circuit diagram extract)
• Noisy and distorted sound.
• Buzz in audio. intermittently.
• Intermittently set will not come on either from switch on or from standby. May work correctly for several days then not come on. (part of circuit diagram displayed)
• Poor picture in band I and III (channels 2 and 4)
• Several dry joints in HF section, on the main chassis in PSU, on line output stage and on power smoothing IC.
• Intermittent no picture. Blank raster not even channel display. (with circuit diagram extract)
• No colour (intermittently).
• Flyback lines. at top. (+ extract of circuit diagram)
• When changing channels the picture goes blank. (part of circuit diagram displayed)
• Top of picture elongated. Bottom OK. (KVDX27TD BAUR repair tip)
• Only snow at band I operation.
• Horizontal line or black band at upper picture part. Distorted vertical deflection.
• Negative picture. intermittently.
• Picture hardly visible or too dark. Videotext and OSD OK.
• Trips a few times, then no function.
• Picture covered by a fine shimmering, black lines.
• No picture and sound sync. Picture goes black and white. No channel tuning in search.
• One colour cuts out or picture gets darker.
• Picture reduction at the bottom.
• Drifting after a certain time.
• No MONO audio.
• No audio. OK via SCART .
• Dark/blurred/no picture. Smell of burning
• Right side of picture is dark. Pincushion fault on the left. (service info for BAUR -KVDX27TD)
• No operating voltage in the vertical stage.
• Poor frame linearity at start up and screen compressed in the middle for 5 minutes.
• Line output transistor fails intermittently. (picture attached)
• No video signal on CRT for 3-4 mins at start up from warm or cold. Picture appears with flyback lines. (+ extract of circuit diagram)
• Dead. Standby LED flashes . (KVDX27TD tip from BAUR)
• Intermittent Nicam sound dropout or crackling, set going off tune, picture going dark or negative.
• TXT switch-over is defective. Only TXT characters, or intermittently only TV picture available. (KVDX27TD tip from BAUR)
• No picture and sound or picture is negative.
• Does not decode Canal Plus on scart 1. (service info for BAUR -KVDX27TD)
• TV picture remains in TXT mode and does not change channels.
• Rolls on some channels and certain picture content.
• Line transformer starts up for 2 secs then stops. Power supply voltages ok. (extract of circuit diagram attached) (KVDX27TD BAUR repair tip)
• Negative picture.
• Switches off by itself. in standby (after a while).
• Picture drifting after a certain time. (KVDX27TD tips)
• Dead. Comes on in standby when switched on from socket.
• R807 (1K) burns as soon as appliance starts up.
• Flyback lines through a weak picture with too much brightness.
• Black screen. Sound OK. Loud crackle in speakers at switch off with RC.
• Lines in picture. on the left half screen. (+ extract of circuit diagram)
• Slow start-up. when cold.
• Appliance failed with a violent flash on screen and ominous fizzing noise.