KVX2521 / OTTOVERSAND [TV]

• No synchronisation. when cold.
• Motorboating noise could be heard from speaker when standby selected.
• Starts on Pr0 and goes to Pr8, Pr16, Pr24 and back to Pr0 when Pr+ is released. (with circuit diagram extract)
• 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.
• Colours and picture flicker in cold condition.
• Chassis type info. (OTTOVERSAND - KVX2521 information)
• Scart plug 1 does not work. Neutral screen with symbol 1 displayed on screen during Canal Plus or when VCR is in PB.
• No picture. intermittently. Intermittent audio.
• Power supply does not start up, nor with lamp on 135V. (extract of circuit diagram attached)
• General information.
• Horizontal line or black band at upper picture part. Distorted vertical deflection.
• Buzz in audio. intermittently.
• No NICAM. (KVX2521 OTTOVERSAND repair tip)
• RC units.
• After pressing main switch, PSU makes 4 attempts to start and then stops.
• No picture and no sound. Red LED lights up when changing channel. Noise from appliance when switching TV off.
• No sound or vision, tuning searches but no signal present. (extract of circuit diagram attached)
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• R624 is unsoldered. No obvious s/c. Primary HT is ok. (+ extract of circuit diagram) (KVX2521 tip from OTTOVERSAND)
• Switches to standby or dead, intermittently. OK after a while.
• Starts on Pr0 and goes to Pr8, Pr16, Pr24 and back to Pr0 when Pr+ is released. (picture attached)
• R807 o/c. D803 s/c. Value of R807 and D803.
• No picture, channels cannot be stored in memory. (extract of circuit diagram attached)
• No channel storing.
• Tuning drifts.
• Sound is defective. Only hissing noise. Evtl. OK on some channels.
• Value of R807 in the G2 circuit.
• Chassis type info.
• No sound. Picture is correct. (service info for OTTOVERSAND -KVX2521)
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• 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)
• Circuit protectors PS601 and PS602 are open circuit.
• Hum in sound in STEREO reception. Sound OK in MONO reception. (picture attached)
• No vertical sync if picture has strong contrast.
• Flickering, horizontal black lines over the picture. (KVX2521 tips)
• Intermittent Nicam sound dropout or crackling, set going off tune, picture going dark or negative.
• Shuts down. after a few seconds. No LED lit. (OTTOVERSAND - KVX2521 information)
• Blue picture. Flyback lines.
• Intermittent audio.
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Streaks on picture, becomes dark and sometimes even switches off.
• Type of zener D513 in vertical time base.
• Flyback lines. at top. (+ extract of circuit diagram)
• Switches off by itself. after start-up.
• No volume control by RC and front panel but OSD works. (picture attached)
• No channel storing.
• Stuck in standby. LED blinks .
• Programming the basic values after exchanging the memory IC SDA 2546
• No picture. OSD and TXT OK .
• Drop out. (extract of circuit diagram attached)
• 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)
• To confirm that the power supply is working.
• Spare parts information. Fbt replacement.
• Red or blue colour triggers when warming up.
• Switches off by itself. in standby (after a while).
• When tuning after finding the desired channel, if you press the memory button everything disappears instead of fixing the picture.
• Spare parts information. Fbt replacement. (OTTOVERSAND - KVX2521 information)
• Picture reduction at the bottom.
• Value and characteristics of C805.
• Power supply trips approx 3 times, then goes dead.
• Dark picture. OSD and TXT OK .
• Spare parts information. Fbt replacement.
• Blank raster. Flyback lines. (with circuit diagram extract)
• Intermittently dead. (with circuit diagram extract)
• Intermittent or no sound.
• PSU chirps. LEDs flash.
• No sound or vision, tuning searches but no signal present. (picture attached)
• Defective field linearity.
• No sound. Sound present in signal traced on LR of connector CNK21.
• LED flashes for a few seconds then appliance goes dead. (extract of circuit diagram attached)
• Picture severely cramped at the bottom of the screen and stretched at the top. (extract of circuit diagram attached)
• Search does not function.
• Noise in stand-by mode. (part of circuit diagram displayed)
• Intercarrier hum by bright picture.
• Poor linearity. at top.
• Channel drift. (picture attached) (service info for OTTOVERSAND -KVX2521)
• The appliance makes a noise during standby. (picture attached)
• Negative picture.
• Station adjustment de-tunes intermittently, especially on program site 1.
• Standby LED lights up after a while. No switch on. (extract of circuit diagram attached)
• EHT rises then falls, appliance goes dead.
• 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)
• Dead. Comes on in standby when switched on from socket.
• Picture disappears leaving only channel number. (+ extract of circuit diagram)
• Buzz. (with circuit diagram extract)
• Spontaneously goes to AV-2.
• Loss of picture and/or sync. (part of circuit diagram displayed)
• No channel storing. (picture attached)
• Motorboating noise from speakers. in standby.
• Narrow line.
• No picture. Sound OK.
• Drifs off tune, search tunes up but not down.
• Functions correctly for 10-15 mins, then at channel change screen becomes black and sound is absent. OK via scart.
• 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.
• No channel storing.
• Searches for channels continuously. intermittently.
• No picture channel. OSD OK.
• Dark picture. after warm-up (intermittently).
• No picture. Sound ok. Screen is red or sometimes red before picture failure.
• Does not retain channels in memory when warm. N
• No G2 power supply.
• Interference in TXT. Searches picture but random characters. Some lines OK.
• Dark screen. (extract of circuit diagram attached)
• Sound whistles on all channels. (extract of circuit diagram attached)
• Low brightness and orange coloured picture.
• Horizontal roll.
• Rattling sound at switch on/off and in standby.
• Picture rolls. Dark picture. intermittently.
• After one day the tuning has shifted. (part of circuit diagram displayed)
• Switches off by itself. after a while.
• After operating for a few minutes the TV switches to black and white then makes a rumbling noise. (+ extract of circuit diagram)
• Tuner drifts after 10 mins and then fails after a short time.
• Goes to black and white, sound shifts and groans, similar to tuner drift.
• Green component of picture varies or none at all. (part of circuit diagram displayed)
• High voltage is built up, then goes off immediately.
• The appliance intermittently drifts out of frequency.
• Intermittently sound is missing. (with circuit diagram extract) (service info for OTTOVERSAND -KVX2521)
• No response to RC: incorrect functions in VOL+ and PROGRAMME-. Picture appears slowly and vertical lines are warped. (part of circuit diagram displayed)
• Trips then attempts to start three times. (picture attached)
• Searches for channels continuously.
• Does not decode Canal Plus on scart 1.
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Channels change suddenly or random OSD.
• No start-up (intermittently).
• No picture, only snow. (part of circuit diagram displayed)
• Appliance does not stop at station during search tune. (+ extract of circuit diagram)
• No raster. No OSD. (with circuit diagram extract)
• Line in picture, at 1/3 from top of screen.
• Trips. (service info for OTTOVERSAND -KVX2521)
• Channels disappear or have shifted.
• Distorted audio. (picture attached)
• Picture appears slowly. Audio OK .
• All (-) keys inoperative.
• No sound in reception via the aerial. Son OK at the scart input. No audio signal at scart output, seems to come from the IF.
• Flyback lines through a weak picture with too much brightness.
• Tripping. (KVX2521 tips)
• Screen flashes with smearing then eventually goes blank. (with circuit diagram extract)
• No signal. via RF output.
• No picture. R807 (1K/1W) heats up.
• Reduced vertical size. when cold.
• RC units.
• Vertical roll.
• Switches to PAL after a long time or no sound and no RC.
• No or intermittent start-up.
• Whistle in normal sound adjustment. Occasionally crackling noise. (picture attached)
• White streaks on picture and no visual lock on channel.
• Lines in picture.
• Picture size incorrect. Change in size of raster. (extract of circuit diagram attached)
• RC units.
• Horizontal lines. (part of circuit diagram displayed)
• Vertical collapse. (with circuit diagram extract)
• Intermittently no sound. Picture OK.
• New type of stand-off resistor.
• Intermittently will not retain channel data. (with circuit diagram extract)
• Distorted audio. (+ extract of circuit diagram) (KVX2521 tips)
• Brightness varies. Flyback lines. (picture attached)
• Appliance failed with a violent flash on screen and ominous fizzing noise.
• Slow start-up. when cold.
• After warming up for 10 mins, crushing of all the colours. (picture attached)
• No audio (intermittently).
• Shuts down.
• Intermittent crackle, quite loud on the sound. Something is clearly arcing. (+ extract of circuit diagram)
• Black picture, OSD OK, works fine after a while. No fault when cold.
• 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)
• Reduced vertical size. (part of circuit diagram displayed)
• Negative picture. when cold.
• Automatic tuning problem. Not stopping in search, may also drift on the stations that are in the memory, although OK at channel change.
• Switches to standby. after a while.
• No picture. No channel storing. (picture attached)
• No synchronisation. intermittently. (+ extract of circuit diagram)
• Colours disappear.
• 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)
• At programming the stations brightness varies in the same time with blinking program display.
• No brightness.
• Poor focus.
• No channel storing. (+ extract of circuit diagram)
• Channel search ok in UHF and VHF but impossible to store channels. (with circuit diagram extract)
• 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)
• Intermittently no picture, no sound at switch over. Picture and sound OK via AV.
• Distorted audio.
• Picture disappears after approx 2 mins. First colours start to roll and sound disappears. (extract of circuit diagram attached)
• No picture. (+ extract of circuit diagram)
• Picture hardly visible or too dark. Videotext and OSD OK.
• No brightness. intermittently. (KVX2521 tip from OTTOVERSAND)
• Distorted audio. (+ extract of circuit diagram)
• Reduced vertical deflection. Poor vertical linearity.
• Brief HT after switch on then switches off.
• No TXT. (+ extract of circuit diagram)
• Impossible to receive L standard without thermal tube noise. B/G standard is received but search does not stop.
• On lower tones the sound is mishaped, sounds like a defective speaker. (part of circuit diagram displayed)
• Pulse on the collector of the line power transistor but stops immediately. 135V is correct. Supplies in 15V. (part of circuit diagram displayed)
• Channels change at random.
• Appliance buzzes in standby. It is OK in operation.
• Occasionally sound and picture fail.
• Frame output chip blown repeatedly.
• No E/W correction. (+ extract of circuit diagram)
• Picture and sound fail (base board). (with circuit diagram extract)
• RC units.
• No audio. intermittently.
• 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. (with circuit diagram extract)
• No aerial, ok in scart. Search ok but does not stop. When cold only some sound for 3 or 4 secs. (KVX2521 OTTOVERSAND repair tip)
• Destroy of R807.
• Blank screen.
• Mains fuse blows instantly. (with circuit diagram extract) (OTTOVERSAND - KVX2521 information)
• High pitched buzz from right hand speaker.
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Dead. after a few seconds.
• Defective On/Off LED. Loss of LED from standby. Cannot be started up again.
• No picture. OSD OK .
• No sound from tuner, scart sound OK.
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Changes channels. Channel search system functions in part but does not stop and runs through all the channels.
• No subtitles with the "Subtitles for the hard of hearing" decoder. (OTTOVERSAND - KVX2521 information)
• No power on AC. The majority of flyback transformers changed are not faulty. (KVX2521 tips)
• Line transformer starts up for 2 secs then stops. Power supply voltages ok. (part of circuit diagram displayed)
• RC units. (KVX2521 tip from OTTOVERSAND)
• Audio muting problem. The sound my not mute completely when the mute button is pressed on the RCU. (picture attached)
• Value and characteristics of R807.
• Noise bar. (with circuit diagram extract)
• Chassis type info.
• Shuts down (after a few seconds).
• No reception in HF. Ok in scart. (KVX2521 tips)
• R807 blows intermittently every couple of months on the G2 circuit.
• Audio noise. (extract of circuit diagram attached) (KVX2521 tip from OTTOVERSAND)
• No green or blue. (part of circuit diagram displayed)
• No start-up. Protection mode activated. (with circuit diagram extract) (OTTOVERSAND - KVX2521 information)
• Automatic tuning problem. Not stopping in search, may also drift on the stations that are in the memory, although OK at channel change. (part of circuit diagram displayed)
• Approx. 2cm of picture are missing on the top edge. Stripes with bright background (linearity fault).
• Reduced vertical and horizontal size.
• Intermittent picture roll. Then picture is negative and occasionally no picture. (OTTOVERSAND - KVX2521 information)
• RC units. (KVX2521 tips)
• Flickering colours. Flickering picture.
• Red picture. Dark screen. after a while.
• Intermittent loss of picture/sound. Fault could be produced when main panel flexed. (extract of circuit diagram attached)
• Sound and picture disappear when hot. Only display remains at channel switch over. OK when cold.
• No RC functions. (picture attached)
• Stuck on a channel. Unable to switch over neither from front panel nor with MD.
• No power supply on jungle-IC, no drive pulses on the line transistor.
• Spare parts information. Fbt replacement.
• During channel search the appliance runs across the channels.
• Switches off. No standby display.
• Service information. Fitting nicam OPK401 kit.
• RC units.
• Bright picture. Flyback lines. (part of circuit diagram displayed) (service info for OTTOVERSAND -KVX2521)
• Distorted audio. (part of circuit diagram displayed)
• Value of R807 and D803 in G2 circuit.
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• No audio. No picture. (+ extract of circuit diagram)
• Audio and picture fail.
• Service information. Details of nicam adaptable sets.
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• TV picture remains in TXT mode and does not change channels.
• Picture is missing or video level reduction. (part of circuit diagram displayed)
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Shuts down. intermittently.
• Loss of power supply.
• Distorted audio. (part of circuit diagram displayed)
• Teletext is missing, page number only. (picture attached)
• No horizontal synchronisation.
• Hum in sound or poor sound.
• Picture goes dark then disappear but OK when warm.
• No functions. (with circuit diagram extract)
• PSU pulsates.
• Voltage switches on for a short time and switches off again. (picture attached)
• Distorted picture. Low contrast. Fault occurs intermittently. .
• Reduced horizontal size. Pincushion distortion.
• Poor tuning at switch on. Tuning OK after approx 30 secs.
• Chassis type info.
• No video signal on CRT for 3-4 mins at start up from warm or cold. Picture appears with flyback lines. (with circuit diagram extract)
• White screen. Scart OK. At channel search, picture and sound are OK. After storing, picture white again and no sound.
• Snowy effect on all programmes.
• RC units. (KVX2521 OTTOVERSAND repair tip)
• Intermittent no picture. Blank raster not even channel display. (+ extract of circuit diagram)
• Distorted picture.
• No picture and sound or picture is negative.
• Chassis type info.
• Vertical lines have shifted zigzag to the left and right after warming up.
• Negative picture when cold and/or lines on all channels.
• Picture covered by a fine shimmering, black lines.
• Stuck in standby. (+ extract of circuit diagram)
• Trips. at start-up.
• General information.
• After switch on, the sound is muted for a few minutes. (picture attached) (OTTOVERSAND - KVX2521 information)
• Smearing in picture. Low brightness. (extract of circuit diagram attached)
• Right side of picture is dark. Pincushion fault on the left. (OTTOVERSAND - KVX2521 information)
• No colour.
• Lines in picture. on the left half screen. (with circuit diagram extract)
• No + B on the tuner.
• Distorted sound on scart socket only, on Hi-Fi, tapes and satellite receivers. (with circuit diagram extract)
• Distorted audio. (extract of circuit diagram attached)
• 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.
• Occasionally picture is distorted and there is no contrast. (+ extract of circuit diagram)
• Raster bowed at the sides, with only the left hand quarter picture showing. (extract of circuit diagram attached)
• Stretched field.
• No audio. Picture OK .
• Horizontal lines in the picture, weaker or stronger depending on picture content. Fault also visible in AV mode when switched to AV and no signal is present.
• Intermittently poor chirping sound.
• No start-up from standby.
• Poor picture in band I and III (channels 2 and 4)
• No sound and picture after operating for a short while when switching over channels. OK via scart.
• Dead. Standby LED flashes .
• Chopper transistor S/C. (with circuit diagram extract) (service info for OTTOVERSAND -KVX2521)
• Small screen, only 10cm. (OTTOVERSAND - KVX2521 information)
• No memory. (extract of circuit diagram attached)
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• UHF search is correct but no channel memory. (part of circuit diagram displayed) (KVX2521 tips)
• Intermittent hum in the sound.
• No HV.
• No synchronisation.
• Occasionally picture and sound disappear. (part of circuit diagram displayed)
• Starts up. LED does not flash.
• Hum from speakers in standby.
• Sound buzz. (with circuit diagram extract)
• No picture, no memory and no sound. (with circuit diagram extract)
• No horizontal synchronisation. No vertical synchronisation. (service info for OTTOVERSAND -KVX2521)
• Vertical collapse. intermittently. (OTTOVERSAND - KVX2521 information)
• Picture too small. at top.
• Motorboating noise from loudspeaker.
• Intermittent voltage at secondary PSU. (OTTOVERSAND - KVX2521 information)
• Crackle in sound after switch on. Also at switch off for several secs.
• Excessive brightness. Flyback lines. (+ extract of circuit diagram)
• No audio.
• The PSU hiccups constantly. (extract of circuit diagram attached)
• Chassis type info. (service info for OTTOVERSAND -KVX2521)
• Chassis type info.
• No functions. after lightning strike. (with circuit diagram extract)
• Loose contacts.
• Value and characteristics of D803. (OTTOVERSAND - KVX2521 information)
• Motorboating noise from speaker when standby selected.
• Drifting. (extract of circuit diagram attached)
• Hum in audio. in standby.
• No audio (intermittently).
• Switches on, EHT present momentarily then set switches off. (+ extract of circuit diagram)
• Sound pops through satellite full scart output one and two. (picture attached) (service info for OTTOVERSAND -KVX2521)
• Noisy and distorted sound.
• No or poor sync.
• No colour. All other functions ok. (extract of circuit diagram attached)
• Black picture with programme indication after approx 15 mins. Snow briefly when switched from TXT to TV.
• No programs present. Finds programs through search mode, but when storing, always jumps to tape end of UHF.
• Vertical fault. Reduced vertical size. after a while.
• Intermittent colour. (extract of circuit diagram attached)
• Noisy transformer. Standby noise from srt. (picture attached)
• Intermittent loss of sound and picture. (with circuit diagram extract) (KVX2521 tip from OTTOVERSAND)
• Dead. after lightning strike.
• Line output transistor fails intermittently. (with circuit diagram extract)
• Black, horizontal lines in the picture.
• Sound and picture are missing, EHT ok. (+ extract of circuit diagram)
• Search doesn't stop. Stored channels drift off tune after a short time.
• Switches off by itself.
• Tuning error.
• RC units.
• Picture runs through and is intermittently negative.
• No colour. TXT OK .
• When high brightness signal is received through the front Y/C socket, field synchronisation becomes unstable.
• Stretched field scan from centre to top of screen with no field scan from centre to bottom.
• Screen very white, scart is OK. Picture and sound ok in station search. After PB again completely white and no sound.
• No audio. OK via SCART .
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Intermittent crackling sound. Occasional noise. Also occasional loss of colour. Established chirping on B channel. No tuning.
• When changing channels the picture goes blank. (+ extract of circuit diagram)
• No picture, no sound or fails when warm.
• 4A fuse blows on PSU.
• Occasional popping noise from loudspeakers.
• Picture is distorted when brightness is adjusted. (Zoom effect).
• White lines in the centre of the screen on unsynchronized channels.
• The sound crackles occasionally.
• Intermittent loss of video preceded by a broken up negative picture.
• Audio level problem when switching. Sound may not mute completely when the mute button is pressed on the remote commander. (extract of circuit diagram attached)
• RC units.
• No audio. on the right.
• Fizzling at start-up. Switches to standby.
• Buzzing noise from loudspeaker in standby.
• Flyback lines and preset brightness level is wrong. (extract of circuit diagram attached)
• No operating voltage in the vertical stage.
• Audio crackles.
• Incorrect tuning or goes to muting.
• Value of R807 and D803.
• No picture. after warm-up.
• The whole picture was covered by fine,shimmering horizontal black lines. (+ extract of circuit diagram)
• Buzz. (+ extract of circuit diagram)
• No memory. (+ extract of circuit diagram)
• No audio.
• Linearity fault. Upper section of picture is too wide and lower section compressed.
• After a while, picture becomes dark and dragged (like when it is out of adjustment). (part of circuit diagram displayed)
• 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. (service info for OTTOVERSAND -KVX2521)
• Picture reduced vertically and horizontally. The remaining 2/3 is black. Sound OK.
• No colour. (picture attached)
• Only snow on channel 2 and 3 (band VHF1).
• Shuts down after approx 20 mins with standby light flickering. No RC operation.
• No raster.
• No picture. Audio and OSD OK . (extract of circuit diagram attached)
• Automatic channel search does not stop. Picture is black/white in operation.
• Goes into black and white in PAL. (+ extract of circuit diagram)
• Loss of station memory. (picture attached)
• No picture. LED flashes twice .
• Channels slightly drift off tune after short time, then noise in sound and no colour.
• Flickering horizontal lines.
• Rolls on some channels and certain picture content.
• Faint/intermittent picture. (extract of circuit diagram attached)
• Spare parts information. Fbt replacement.
• Picture drifting after a certain time.
• Jagged picture effect, the picture is broken into sawteeth or wriggles in a random way. Fault can be intermittent. (+ extract of circuit diagram)
• A humbar appears in the picture when there is low brightness. Intermittent picture roll.
• One colour cuts out or picture gets darker.
• Does not function in HF, ok in scart.
• Chassis type info.
• Dark picture. (part of circuit diagram displayed)
• Dark screen and no sound in UHF and negative picture in VHF after working for a few hours or days.
• No channel available after changing channel. Ok when appliance cold. (with circuit diagram extract)
• Poor convergence.
• Appliance is dead, rise in EHT then the appliance breaks down. (+ extract of circuit diagram) (OTTOVERSAND - KVX2521 information)
• Drifting after a certain time.
• Black screen. Sound OK. Loud crackle in speakers at switch off with RC.
• Not storing channels.
• No function. Pulsates and standby LED lights up approx. 3 times, then no function.
• Venetian blinds via AV1. Stripes when switching from one programme site to another.
• Memory loss. after a few minutes.
• No TXT. intermittently.
• There is a problem with mono/stereo identification when receiving a stereo transmission (PAL B/G).
• Picture ok on switch on but no text after a few minutes. Picture goes to black raster. (with circuit diagram extract)
• Top of picture elongated. Bottom OK.
• Automatic tuning problem. Not stopping in search, may also drift on the stations that are in the memory, although OK at channel change. (part of circuit diagram displayed)
• Intermittent colour. (OTTOVERSAND - KVX2521 information)
• Low contrast. when cold. Focus problems.
• No picture. Audio OK . (picture attached)
• Automatic tuning problem. Not stopping in search, may also drift on the stations that are in the memory, although OK at channel change. (part of circuit diagram displayed) (service info for OTTOVERSAND -KVX2521)
• Intermittent buzzing in sound. Volume decreases intermittently.
• Transistor (2SD1548) in power supply S/C.
• No sound in one or both channels (may be intermittent).
• No colour (intermittently).
• Tuner drift in frequency. Channel search is impossible. CTV still indicates auto, channels run through but no memory.
• Linearity error.
• OSD is green. Streaking in picture. (KVX2521 OTTOVERSAND repair tip)
• New program no. is displayed after program switch-over, but no reception, not even at scart socket output.
• Slow start-up. Negative picture. intermittently. (extract of circuit diagram attached) (KVX2521 tip from OTTOVERSAND)
• Memory loss. intermittently.
• Spare parts information. Fbt replacement.
• Automatic tuning problem. Not stopping in search, may also drift on the stations that are in the memory, although OK at channel change. (with circuit diagram extract)
• Low audio.
• Distorted audio. (extract of circuit diagram attached)
• Hiccups after a few mins (picture folds over). Power supply voltage seems to collapse. Continues to do so, nothing seems to become hot.
• Sound is faint. (extract of circuit diagram attached)
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Sound becomes louder, sound crackles, OSD also changes.
• Intermittent fault, screen would light up bright green. (extract of circuit diagram attached)
• Memory loss.
• R807 (1K) burns as soon as appliance starts up.
• Tuner IF AGC fault. Distorted picture unable to lock. (+ extract of circuit diagram)
• Cracking sound.
• Switches off straight away again after switching on. (part of circuit diagram displayed)
• PSU does not oscillate.
• Automatic tuning problem. Not stopping in search, may also drift on the stations that are in the memory, although OK at channel change. (picture attached)
• TXT switch-over is defective. Only TXT characters, or intermittently only TV picture available.
• No picture. on the right. No E/W correction.
• 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.
• 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.
• Searches for channels continuously.
• 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. (part of circuit diagram displayed)
• PSU does not start up. No standby. Degausssing is audible.
• Standby LED on for 2 secs then switches off. No start up.
• Appears dead but blank raster if brilliance increased.
• Green OSD, streaking.
• Synchronisation is poor, field roll and drifting AFC. (part of circuit diagram displayed)
• Searches for channels continuously.
• Field striations across the top of screen.
• Intermittently no channel memory. TV does not tune in when channels are changed. Can be tuned in but will not memorize. (with circuit diagram extract)
• Horizontal line or black stripe in upper part of picture. Distorted vertical deflection.
• Distorted audio. (+ extract of circuit diagram)
• No picture (intermittently). (picture attached)
• No memory after a few minutes operation (+ extract of circuit diagram)
• 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. (service info for OTTOVERSAND -KVX2521)
• Switches by itself to another channel.
• No picture and sound sync. Picture goes black and white. No channel tuning in search.
• No reception.
• Vertical fault. (service info for OTTOVERSAND -KVX2521)
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke.
• Set stuck on channel 11 and no response to either the front controls or the remote control unit.
• Poor linearity. at bottom.
• No colour, If station search, NTSC is superimposed.
• Power supply starts up but immediately switches off. (+ extract of circuit diagram) (KVX2521 tip from OTTOVERSAND)
• Loss of station memory. (part of circuit diagram displayed) (OTTOVERSAND - KVX2521 information)
• Starts up at Power On then switches off immediately after. It takes 2 or 3 minutes to start up again.
• Black screen. Displays "N" for programme. Via scart also. (KVX2521 tips)
• No power supply (+290V is present).
• Dead, only standby LED flashes 2 times repeatedly.
• Fails completely or switches to stand-by and tries to start intermittently.
• No audio. (with circuit diagram extract)
• Spare parts information. Fbt replacement.
• RC units.
• Basic setting after replacing memory IC.
• No vertical deflection.
• Switches to protection mode.
• No channel storage in visible picture search.
• Horizontal jitter in picture (twitched picture) and sometimes vertical sync dropout after warming up.
• Appliance not functioning, burnt R807. (with circuit diagram extract)
• Sound disappears intermittently, but is still slightly audible. (extract of circuit diagram attached)
• Red standby LED flashes constantly after switch on. If it is switched on with RC, LED goes out, but appliance does not start.
• 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.
• Horizontal jitter. Picture rolls. intermittently (after warm-up).
• Audio muting problem. The sound may not mute completely when the mute button is pressed on the RCU. (+ extract of circuit diagram)
• 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.
• RC units.
• Sound buzzes in standby. Sound OK in normal mode.
• Total or intermittent loss of one or both channels.
• Bright red raster. (+ extract of circuit diagram)
• Noise for a short while, then no sound via scart.
• After a few minutes the tuned-in program fades out.
• Picture and sound fail. (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. (with circuit diagram extract)
• Poor frame linearity at start up and screen compressed in the middle for 5 minutes.
• Hum and noise in STEREO. (service info for OTTOVERSAND -KVX2521)
• No reception. Tuning changes.
• Excessive horizontal size. Pincushion distortion.
• Impossible to memorize the channels, the other functions are normal. (part of circuit diagram displayed)
• Intercarrier hum especially at STEREO channels.
• Takes too long to start up. After approx. 10 min. starts up suddenly. (OTTOVERSAND - KVX2521 information)
• Switches to standby. at start-up.
• RC units. (KVX2521 tip from OTTOVERSAND)
• G2 voltage missing.
• No vertical and horizontal sync. Lines only and picture running.
• Burning smell. (picture attached)
• Various dry joints in the HF unit, on the base chassis in the PSU, of the line output stage, on the voltage stabilising ICs.
• No reception after approx. 5 mins after switch over. Search is on UHF end. Program ok at switch on.
• E/W fault. (picture attached)
• No volume control via RC and user control. No sound via AV.
• 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 attached)
• Dark picture. Program display available. No reaction either to RC and to control panel.
• D803 heats up and is leaky. (part of circuit diagram displayed)
• Picture fades out but comes back slowly with auto grey scale correction visible if hit.
• Several dry joints in HF section, on the main chassis in PSU, on line output stage and on power smoothing IC.
• Dark/blurred/no picture. Smell of burning
• Distorted audio.
• Loss of colour when warm or switching channels. (+ extract of circuit diagram)
• Channels are lost when channel change selected after approx. one hour. Tunes OK. (OTTOVERSAND - KVX2521 information)
• Shuts down. after start-up.
• Jagged picture. (extract of circuit diagram attached)
• Intermittent intercarrier hum in sound by bright picture parts.
• Picture drifts on all channels. (+ extract of circuit diagram)
• Value of D803 and R807.
• Loss of picture after some time when switching channels. (with circuit diagram extract)
• No horizontal deflection. (picture attached)
• No NICAM.
• Arcing.
• Trips once then dies.
• Picture rolls. Poor picture. (with circuit diagram extract)
• Picture takes longer and longer to come on. Come on instantly if A1 control is turned up or down.
• Dark screen and no sound in UHF and negative picture in VHF after working for a few hours or days.
• Switches off by itself. after a few seconds.
• Black screen.
• R807 burnt.
• Picture fails or is distorted intermittently. Via scart OK. Knock sensitive.
• Reduced vertical size. at top. Flyback lines.
• Line tearing. (+ extract of circuit diagram)
• Volume and muting controls not responding but OSG show operation correctly.
• Errors on vertical and horizontal picture.
• Distorted audio. (+ extract of circuit diagram)
• No sound, visual display OK.
• Tuning memory does not function. (+ extract of circuit diagram)
• Intermittent drift.
• Cramped raster. (picture attached)
• No functions. Standby LED lit .
• Appliance goes dead after approx 1 second. (with circuit diagram extract)
• No oscillation at start up.
• No memory. (with circuit diagram extract)
• Trips a few times, then no function.
• White line. at bottom.
• O/W is defective.
• Audio muting problem.The sound may not mute completely when the mute button is pressed on the RCU. (part of circuit diagram displayed) (KVX2521 tips)
• The tuner drifts out of tune after working for 5 minutes.
• Service information. When stocks of 21", 25" and 29" crt's are exhausted, they will be replaced by an itc, comprising CRT + scan yoke. (KVX2521 tips)
• Dead. Trips. (part of circuit diagram displayed)
• During channel search, picture won't stop.
• Line output transistor fails repeatedly. (picture attached)
• Negative picture. intermittently.
• Sometimes channels run though and remain in PAL B-G. Controls ok when tuning. (part of circuit diagram displayed) (KVX2521 tips)
• Only snow at band I operation.
• HV humming from loudspeaker right/left channel.
• Switches off after 15 mins and can be switched on again only after 15 mins.
• Intermittent loss of right hand channel sound. (KVX2521 OTTOVERSAND repair tip)
• No audio. (picture attached)
• Excessive vertical size.
• No picture. intermittently. (picture attached)
• No MONO audio. (service info for OTTOVERSAND -KVX2521)
• Tuning drift and no memory. (with circuit diagram extract)
• Intermittent TXT contrast variations.
• Intermittently no program store.
• Skips channels during tuning.
• Pale colours in upper picture area.
• Green picture. Retrace lines.
• Drifts after a few mins. No search possible when fault present. (part of circuit diagram displayed)
• No picture. No sound. No control via the RC.
• 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. (extract of circuit diagram attached)
• Distorted picture. Top is stretched, foldover at bottom. (KVX2521 tips)
• TV OK after a few days at rest then after 2 minutes power supply crackles and stops.
• RC units.
• M58655P blows at switch on. 5V ok, -33V slight pollution on pin 2, ok on other side of R062. CLOCK and DATA ok.
• Poor vertical linearity.
• RC units.
• No picture. Sound ok. CRT heaters lit. (extract of circuit diagram attached)
• Poor linearity or geometry. Frame linearity fault. Usually only occurs in sets which are more than two years old. (extract of circuit diagram attached)