LEONARDOROYAL5750VT / OTTOVERSAND [TV]

• No switching into CCIR standard. Display ok in SECAM and PAL/SECAM. (part of circuit diagram displayed)
• Poor picture. via tuner. (picture attached)
• No tuning. when cold. (picture attached)
• Intermittent picture size.
• Hum in audio. (+ extract of circuit diagram)
• HV capacitor burns. (picture attached)
• No TXT. Intermittent green dots or lines through picture. Black screen. (OTTOVERSAND - LEONARDOROYAL5750VT information)
• No control signal to IC7470 (TDA) and no line scanning. (part of circuit diagram displayed)
• No sound at some stations or audio failure. Via scart OK.
• Switches on for a few secs with extreme brightness. No picture. Sound OK. Goes into safety mode immediately after.
• No horizontal deflection. (extract of circuit diagram attached)
• Distorted audio. (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• Protection of T7625 (BUT18AF). (with circuit diagram extract)
• Starts up again then clicks after a few mins. PSU faled again. (+ extract of circuit diagram)
• No vertical deflection. Horizontal line. (picture attached) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Power supply BU and fuse are defective when TV started up from standby. Occurs every week or fortnight and is very variable. (picture attached)
• Chroma fault in SECAM. (extract of circuit diagram attached)
• No picture. when cold. Audio OK . (+ extract of circuit diagram)
• Faded picture. No contrast. (with circuit diagram extract)
• Secondary voltage cannot be adjusted lower than 160V. PSU however can be regulated with this voltage. (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Tuning search does not stop when appliance has found a station. (picture attached)
• Dark screen. No picture. No RC functions. (part of circuit diagram displayed)
• Intermittently BUT18 defective after switching on. (picture attached) (LEONARDOROYAL5750VT tips)
• To give improved protection to the BUT11AF chopper transistor TR7665.
• Vertical bars on channels 2 and 4 (extract of circuit diagram attached)
• No chopper power supply. (with circuit diagram extract) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• TXT has no function. TXT is activated but only dark screen.
• No regulation. (extract of circuit diagram attached)
• Line output transistor fails repeatedly. after start-up.
• Difficult horizontal and vertical adjustment and sawtooth at the side. (extract of circuit diagram attached)
• Frizzy lines on the picture.
• No function, only hums. (part of circuit diagram displayed)
• The line transistor blows after 5 minutes. (part of circuit diagram displayed)
• Dead set caused by lightning damage. (with circuit diagram extract)
• U148V measures 20V.
• Horizontal end stage BU508AF short circuits after different playing times. (+ extract of circuit diagram) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• No picture. after a while. White screen. (part of circuit diagram displayed)
• Appliance only functions until the 120V is reached with the variac. When the mains voltage is increased the appliance fails. (with circuit diagram extract)
• In VCR there are only chroma lines. (+ extract of circuit diagram)
• Occasionally standby thyristor 6670 S/C. (picture attached)
• Picture linearity error. Picture has shifted towards top. Picture folds over at the bottom.
• No or poor synchronisation. (LEONARDOROYAL5750VT tips)
• Orange spots on the right of the screen.
• Single dark lines in picture centre.
• No start-up with mains switch after switched off from standby.
• R3653 burns. (part of circuit diagram displayed)
• Nasal sound on channels 5 and 6. (with circuit diagram extract)
• Red picture. after a while. (extract of circuit diagram attached)
• No adjustment from PSU possible. (part of circuit diagram displayed) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Channel change impossible after a moment. Channel remains displayed and front LED becomes orange. (+ extract of circuit diagram)
• Black screen. No brightness. Audio OK . (part of circuit diagram displayed)
• Shuts down. after a while. LED blinks .
• Reduced horizontal size. after a while. (extract of circuit diagram attached)
• Faulty TXT. No TXT. intermittently.
• PSU no function.
• No switch on. Red LED flickers for 3 seconds.
• Lines on picture and sections blanked out. No TXT. (picture attached)
• No picture. No display. Erratic functions. (picture attached)
• Ghosts and poor colours. (part of circuit diagram displayed)
• Dead. Soft ticking sound.
• Phase fault. (extract of circuit diagram attached)
• Set dead, power supply refuses to start. Also intermittent start and no standby (extract of circuit diagram attached)
• Very low secondary voltages. (extract of circuit diagram attached)
• Tuning does not function, drifts, raster doubles up. Vertical sychronisation fault. (picture attached)
• Retrace lines. intermittently. (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• S/C from point 18 at line transformer to the ground. (part of circuit diagram displayed)
• Hum in audio. in standby. (picture attached)
• Replacing the EEPROM. (extract of circuit diagram attached)
• Faulty TXT. (with circuit diagram extract)
• Line tearing and picture twitching at the sides of the picture.
• At start up picture appears normally then darkens gradually in PAL. Normal in SECAM. Sound ok. Picture reappears by reducing the contrast, OSD normal. All other functions normal. (part of circuit diagram displayed)
• Secondary voltages fall when loaded. (+ extract of circuit diagram)
• Start with interfering voltage. (+ extract of circuit diagram)
• Dark background and a band of colour on the right. (+ extract of circuit diagram)
• Line output transformer overheats. (part of circuit diagram displayed)
• Vertical bar. on the left. (with circuit diagram extract)
• TV blocks on 600MHZ. If you do a frequency search, it goes through all frequencies but does not find any channels. (part of circuit diagram displayed)
• Horizontal size varies. (with circuit diagram extract)
• Dark picture. Audio OK . (with circuit diagram extract)
• Reduced format, flyback line slightly visible. (+ extract of circuit diagram)
• The resistors 3661 and 3662 burn in standby, TS7625 is also defective sometimes. (with circuit diagram extract) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Functions but heat sink gets very hot after 10 mins. When put into standby, noise in the PSU. (+ extract of circuit diagram)
• Line BU508blows after 3 days. (with circuit diagram extract)
• Power supply goes into safety mode and crackles. (with circuit diagram extract)
• E/W fault. No E/W correction. (with circuit diagram extract)
• Blows fuse. after a few hours. (+ extract of circuit diagram) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• The appliance functions correctly in standard B,G but the sound hums in F standard. (with circuit diagram extract)
• Snow on screen and no tuner reception. F3 displayed on screen. Green LED on. (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• Negative picture when cold and sometimes intermittently. (extract of circuit diagram attached)
• Switching transistor T7625 has failed. (picture attached)
• PSU fails after a short time (S/C of BUT18AF). (picture attached)
• After switch on the picture is sometimes shifted and a black horizontal bar appears in the centre of the picture. (with circuit diagram extract)
• Blows chopper transistor at switch on.
• OSD partly disappeared from the screen in BL sets. (with circuit diagram extract)
• No horizontal synchronisation. (picture attached)
• No audio. intermittently. (part of circuit diagram displayed)
• Doesn't switch into standby. Green LED goes orange and flashes after pressing standby key .
• With high volume the appliance switches spontaneously to standby. (extract of circuit diagram attached) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Reduced vertical size. (with circuit diagram extract)
• Does not switch to standby. Horizontal line. LED blinks . (+ extract of circuit diagram)
• No picture, only horizontal stripe on top. Picture appears only after a long while. Then picture collapses to a horizontal stripe in the centre.
• Noise in audio. (OTTOVERSAND - LEONARDOROYAL5750VT information)
• No deflection. Horizontal line.
• Starts, but only raster. Display shows "F3". (part of circuit diagram displayed)
• No sound or vision with F1 showing in the display.
• Picture is too wide or too small when adjusting horizontal size.
• PSU varies according to picture content when warm. (extract of circuit diagram attached)
• No picture. intermittently. (picture attached) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Power supply is low when warm. (extract of circuit diagram attached)
• BUT11AF S/C. (picture attached)
• No picture, teletext and sound are fine. (picture attached) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Vertical defective, too large line space in upper picture third. Linearity fault. (+ extract of circuit diagram)
• No picture and no sound. (picture attached)
• No signal on the BUT11AF collector. (with circuit diagram extract)
• Pincushion distortion at each side. Adjustment potentiometer does not correct fault. (with circuit diagram extract)
• Line output transistor fails repeatedly. after a while. (+ extract of circuit diagram)
• Error codes. (+ extract of circuit diagram)
• Dark picture.
• 185V instead of 148V. When taking a measurement on collector of TZ 7652, bulb goes off. (extract of circuit diagram attached) (LEONARDOROYAL5750VT tips)
• Horizontal deflection BU fails after a few hours.
• Frame shrinks horizontally when changing brightness. (with circuit diagram extract)
• Excessive brightness. (extract of circuit diagram attached)
• Adjustment black line matrix.
• No audio. after a while. (part of circuit diagram displayed)
• Appliance works fine for hours, but after switching off with the remote control the BUT18 and mains fuse go defective. (extract of circuit diagram attached)
• Crackling from FBT and black vertical bars on screen for a few secs after start up. (with circuit diagram extract)
• Switch on during standby only functions when RC is very close to the appliance.
• Volume uncontrollable. No brightness control.
• Line pairing at top half of the picture (extract of circuit diagram attached)
• Picture looks as if it were encoded (like on C+ channel). Sound is OK.
• Searches for channels continuously. (part of circuit diagram displayed)
• Intermittent fault all over the screen or over an irregular width band leading to line foldover, similar to coded Canal Plus picture. (part of circuit diagram displayed)
• Poor chroma identification in Pal/Secam. On channels 5, 6 or with VCR, blue or red bands. (part of circuit diagram displayed)
• 5.1V incorrect. (part of circuit diagram displayed)
• Thyristor pos. 6670 fails. (extract of circuit diagram attached)
• No brightness. No audio. Raster OK . (+ extract of circuit diagram)
• Crackle a few seconds after Power On. (picture attached)
• Picture green and purple in the E/W direction.
• Luminance takes a long time to appear. Distorted picture, focus pot does not react sufficiently. (picture attached) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Very loud sound at switch but normal at previous switch off. Adjustment OK.
• At start up goes immediately into standby. 12C BUS blocks at 5V. (with circuit diagram extract)
• No picture or narrow streak after warm-up. (part of circuit diagram displayed)
• Set will go off after a period that varied from ten minutes to five hours. It will then stay off,coming back on again after a similarly indeterminate period.
• Fuse 2A and BUT18 immediately defective at switch on with RC. Fault does not occur when switching on with on/off switch or by connecting mains plug. (+ extract of circuit diagram)
• In Standby BUT18AF (T7625) becomes defective.
• Spare part info: values of C2546, C2547 and C2545, located on collector of T7545. (part of circuit diagram displayed)
• Poor vertical linearity. Horizontal size varies. (with circuit diagram extract)
• Picture is stretched - begins 5cms from bottom of the screen and is missing approx 1cm East/West. Appliance functions. (part of circuit diagram displayed)
• PSU defective. (part of circuit diagram displayed)
• Does not switch to standby. No functions. at switch-off. (part of circuit diagram displayed) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• No reset. (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• The sound fails: after changing over to a different channel, the sound is back. (+ extract of circuit diagram)
• Blurry picture.
• Connection of a loop system to the TV.
• Occasionally picture seems to be coded on all the channels especially when cold. (+ extract of circuit diagram)
• No picture. F4 lights up in the display. (extract of circuit diagram attached)
• Poor vertical linearity. Reduced vertical deflection. (extract of circuit diagram attached) (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• Line BU keeps failing. (extract of circuit diagram attached)
• Lines in picture. on the left.
• At switch on with the mains switch, pulsates and after a while begins to function regularly (not always). Does not switch off completely if switched off with RC. (part of circuit diagram displayed)
• Picture and sound drop out. Appliance jumps to channel 1.
• When switching on, HV part hums. No control function is possible. (with circuit diagram extract)
• Primary PSU switches off. No standby LED.
• White screen. Flyback lines. Shuts down. after a few seconds. (part of circuit diagram displayed)
• 148=68V. (part of circuit diagram displayed)
• One colour missing.
• No horizontal synchronisation. intermittently. (+ extract of circuit diagram)
• Tripping. intermittently.
• Line tearing and picture quiver at the edges.
• Flashing picture. (extract of circuit diagram attached)
• Microprocessor/eprom screening plate. (with circuit diagram extract)
• Line output transistor defective. (picture attached)
• No PAL chroma.
• No functions. Power LED lit . (picture attached)
• Vertical lines. on the left. Excessive brightness. (with circuit diagram extract)
• Connection of a loop system to the TV.
• The front control panel changes channels upwards but not downwards. All other functions OK.
• Character error.
• Colour bar at right of screen. (picture attached) (LEONARDOROYAL5750VT tips)
• Blows chopper transistor when switching on with remote. (picture attached)
• Severe crossover distortion in left channel.
• Colour flickering during video editing.
• No luminance. (+ extract of circuit diagram) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• No picture. Grey screen. Brightness control works normally. (part of circuit diagram displayed)
• After a power supply fault caused by a storm video is defective. CTV in AV retains the picture of the TV programme which is being watched. Sound cuts out but OSD EX1 appears and the channel no. remains. (+ extract of circuit diagram)
• Transistor 7545 (BU508AF) is blown. (part of circuit diagram displayed)
• No synchronisation.
• No quick start pulse. (picture attached)
• Stretched picture. at top. Reduced raster size. at bottom. (extract of circuit diagram attached)
• No sound. No response to commands from both RC and front panel. Error message F2 on screen. Picture ok. (part of circuit diagram displayed) (LEONARDOROYAL5750VT tips)
• S/C in 148V line. (part of circuit diagram displayed)
• PSU blown. (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Vertical roll. when cold. (+ extract of circuit diagram) (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• PSU repair. (+ extract of circuit diagram) (LEONARDOROYAL5750VT tips)
• With Blackline picture tubes occasional or random OSD insertion.
• Line output transistor fails repeatedly. (part of circuit diagram displayed) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• 100V power supply is approx 35V. (extract of circuit diagram attached)
• No linearity. (+ extract of circuit diagram)
• Diode D6653 installation sops kit.
• No functions. intermittently.
• Problems with flof TXT. Cannot find p.811 in spite of it being sent out. TXT header remains with subtitling. (+ extract of circuit diagram)
• TV locked by and keys.
• No tuning. intermittently. (picture attached)
• No switch on. Noise from loud-speakers and smell of burning. (part of circuit diagram displayed)
• No start-up. (+ extract of circuit diagram)
• Erratic functions. (part of circuit diagram displayed)
• Excessive red.
• No colour in SECAM and PAL. Colour may appear slightly in SECAM when warm. (extract of circuit diagram attached)
• No start up. No front panel LED. Quiet noise from loud-speakers.
• Tuning drifts. after a while.
• +148V drops to 100V occasionally according to the tube output. (extract of circuit diagram attached)
• Blank raster. No tuning.
• BUT18AF fails repeatedly. (+ extract of circuit diagram)
• Displays error code F4. When you switch to standby again, F4 appears again. LED flashes. Only noise. (with circuit diagram extract)
• Goes dead when switched to standby by RC. No standby LED. Switching on and off at mains, restores normal functions (extract of circuit diagram attached)
• Line output transformer failure.
• Poor picture synchronisation during station switch-over. Vertical picture jitter, runs through, poor picture via RF or EXT. (extract of circuit diagram attached)
• E-W output stage fails as soon as the appliance is switched on. Fuse 1534 (315mA) also fails. (part of circuit diagram displayed)
• Does not go into standby. LED becomes orange but picture remains. (part of circuit diagram displayed)
• Green spot after viewing a white object on the screen. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• No sound or picture. Snowy screen (picture with test signal). Vertical interference bars. (extract of circuit diagram attached)
• +16V flashover. (extract of circuit diagram attached)
• S/C on deflection circuit. (extract of circuit diagram attached)
• Power supply is often destroyed when left in standby. (part of circuit diagram displayed)
• Horizontal stripe. intermittently. (with circuit diagram extract)
• Does not stop at stations. Station search OK. (extract of circuit diagram attached)
• Fails occasionally.
• Flash over on picture tube print.
• Goes to blank screen with unlocked TXT lines when TXT selected.
• Intermittently screen blanks out. Random characters on screen.
• PSU voltage low at 20V. (with circuit diagram extract)
• BU508, Q7593 and Q7594 are defective. (part of circuit diagram displayed)
• Vertical shift incorrect, after replacing a 28" BL-CRT. (+ extract of circuit diagram) (LEONARDOROYAL5750VT tips)
• Picture flickers intermittently, sound disappears. Picture reappears of itself, sound doesn't but can be activated with the RC.
• References for transistors 7615 and 7612.
• No sound or vision, display going to F1.
• Horizontal line. in the centre. (+ extract of circuit diagram)
• When warm, there is a raster fault on the left. (part of circuit diagram displayed)
• Change in picture width depending on beam current. (+ extract of circuit diagram)
• CTV functions one day. (picture attached)
• Vertical foldover at top and bottom. (+ extract of circuit diagram)
• No functions. intermittently. LED blinks . Shuts down. (picture attached)
• Stuck on channel 1.
• When warm, picture foldover and the line BU blows. (extract of circuit diagram attached)
• White area visible on right side of screen in EXT1 mode of BL sets. (picture attached)
• Fails in standby. (picture attached)
• CTV switches on but nothing happens. No sound or picture on the traditional aerial. On the contrary in scart with a dish the CTV has a picture but no sound. No automatic search possible. (picture attached)
• Red LED blinking for 3 secs.
• No TXT, just lines on screen.
• Intermittently dead. (extract of circuit diagram attached)
• Brightness differences in picture. (with circuit diagram extract)
• Impossible to adjust horizontal shift of picture using R3595. (extract of circuit diagram attached)
• PSU blocking. (picture attached) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• BUT18AF (T7625) becomes defective in standby. (+ extract of circuit diagram)
• Low picture amplitude. Barrell-shaped picture. (+ extract of circuit diagram)
• Appliance works for 4 hours and then cuts out completely.
• Intermittent failure thyristor 6670 in STANDBY mode. (part of circuit diagram displayed) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Appliance fails and later comes back unprompted. (part of circuit diagram displayed)
• No picture at switch on but after a few minutes picture appears with weak contrast. Picture improves gradually and after approx 30 mins is normal. (part of circuit diagram displayed)
• Red flashing when changing channels with VCR playback in the still, search modes or edit points in own recordings. (picture attached)
• Can not be switched off in Standby position. When starting, LED becomes orange and blows. (extract of circuit diagram attached)
• When switching on the appliance when it's cold, it takes about 35 seconds before the picture appears. (with circuit diagram extract)
• +120V instead of +148V. (part of circuit diagram displayed)
• Shuts down. after a while. (extract of circuit diagram attached)
• Distorted vertical lines at top and bottom of monoscope. E/W correction is faulty. (extract of circuit diagram attached)
• Set not regulating after SOPS re-build of secondary side of PSU. (+ extract of circuit diagram)
• Functions with an automatic transformer up to 110, 120V. (part of circuit diagram displayed)
• Picture jitters. when cold. (+ extract of circuit diagram)
• Colour blobs in the picture.
• Line BU blows after operating for 3-5 mins. (part of circuit diagram displayed)
• The standby thyristor blows. (+ extract of circuit diagram) (LEONARDOROYAL5750VT tips)
• Weak contrast. No contrast control. (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• Oval picture.
• 148V measures 60V. (part of circuit diagram displayed)
• No picture. Audio OK . (extract of circuit diagram attached) (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• Over oscillations below collector BUT18. (+ extract of circuit diagram)
• Snow on screen and no reception. F4 displayed on screen. Green LED lit. (picture attached)
• No functions. Red LED blinks. (part of circuit diagram displayed)
• Distorted picture. (extract of circuit diagram attached)
• Trapezoid picture. No E/W correction.
• Poor regulation of the power supply. (part of circuit diagram displayed)
• Trips. (extract of circuit diagram attached)
• Power supply BU blows after a few days. (LEONARDOROYAL5750VT tips)
• Modification: Colour decoder chip IC7260.
• Takes approx 1 minute to come on, will not switch to standby, sound mutes but pulsating picture remains. (with circuit diagram extract)
• Flickering text and apparent tuning drift.
• Blows components. at start-up. (picture attached)
• One single line in the middle of the screen. (with circuit diagram extract)
• Appliance starts up with the variac until it reaches 100V and then the appliance fails. (with circuit diagram extract)
• The screen is white and there is no sound. The line transistor blows after 5 minutes. (+ extract of circuit diagram) (LEONARDOROYAL5750VT tips)
• Cannot be switched to standby. After the first attempt appliance is blocked. (+ extract of circuit diagram)
• No picture. No audio. OK via SCART . (+ extract of circuit diagram) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• Dark screen. via tuner. Audio and OSD OK . (part of circuit diagram displayed)
• Poor audio. only on certain channels. Crackling audio.
• Low contrast. in TXT. (picture attached)
• Slow start-up. (+ extract of circuit diagram)
• Horizontal line. Audio OK . (part of circuit diagram displayed)
• Appliance hums in Standby.
• Frayed vertical lines. (with circuit diagram extract)
• Contrast adjustment inoperative, colour streaks. (part of circuit diagram displayed)
• F4 displayed. LED flashes green then orange for slightly less than a sec. (with circuit diagram extract)
• Defective BUT.
• Picture fault in tuner and scart.
• No functions. No button operation. (with circuit diagram extract)
• No HV. (part of circuit diagram displayed)
• No sound when input connection made via 2 S-VHS phono sockets. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Dark picture. Picture rolls. Picture shifted to the left. Flickering picture. (extract of circuit diagram attached)
• No colour. Coloured bars in picture. OK after a few minutes. (extract of circuit diagram attached)
• Only pulsates once. Resistor R3661 in the 5V rail is burnt. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Channels run through. (+ extract of circuit diagram)
• Standby LED flashes at switch on, then switches off after a few secs, if no action is taken. If RC is pressed LED remains on, but no picture and audio. (with circuit diagram extract)
• Picture shifted to the right. Poor synchronisation. (picture attached)
• S/C in EHT stage. (part of circuit diagram displayed) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• No vertical synchronisation. (part of circuit diagram displayed)
• After start up, PSU fails. (+ extract of circuit diagram)
• Local dooming / PP-settings. (extract of circuit diagram attached)
• Switches off after operation time. LED goes off. Dead. Can be turned on via mains switch, then switches off again after operation time.
• Poor linearity. (with circuit diagram extract)
• PCD8582 and X2402 memory. (with circuit diagram extract)
• Connection of the loop system to the TV.
• Dark screen. LED is green. (part of circuit diagram displayed) (LEONARDOROYAL5750VT tips)
• Reduced vertical size at bottom.
• Protection for BUT18AF in PSU. (LEONARDOROYAL5750VT tips)
• No sound in scart. Sound and picture via the tuner. The appliance does not pick up anything. (picture attached)
• Loss of colour or no colour.
• Coloured spots in picture (local dooming). (+ extract of circuit diagram)
• Beam current dependent picture width fault. (+ extract of circuit diagram) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Service mode
• BU508 blows one min after HT transistor (BU508AF) has been replaced. Picture OK during this one min.
• No E/W correction. Pincushion distortion. (with circuit diagram extract)
• Set can be turned off with RC, but not turned on. S.B. LED blinks. (with circuit diagram extract)
• 148V at approx 30V. (extract of circuit diagram attached)
• No picture. in E-E. Audio OK .
• Vertical size varies. Vertical jitter. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• BU508AF fails repeatedly. (+ extract of circuit diagram)
• Error message F7 appears in the first 2 mins. No operation possible. (part of circuit diagram displayed)
• Appliance runs ok, but if remote used to switch to standby, appliance goes dead. (picture attached)
• Poor NICAM sound from left hand speaker.
• Picture takes a long time to appear (several mins). (+ extract of circuit diagram)
• U system only 5V instead 148V. (part of circuit diagram displayed)
• Page 811 appears spontaneously. (part of circuit diagram displayed)
• Intermittently line tearing in picture at the edges. (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• No E/W correction. (+ extract of circuit diagram)
• BUT18, R3570 and F1534 blow. (picture attached)
• White picture and no amplitude when cold. Picture pumping. (+ extract of circuit diagram)
• No picture. when cold. (part of circuit diagram displayed)
• Intermittently green "F5" on screen, thereby very dark picture or TXT appears. (+ extract of circuit diagram)
• Horizontal, bright line.
• Dead. Error code F1 displayed.
• Unadjustable horizontal centering. (extract of circuit diagram attached)
• No audio. when cold. No OSD. when cold. (part of circuit diagram displayed)
• Picture stretched at top, compressed at bottom with black bar. Picture improves when warm. (picture attached)
• Excessive vertical size. (extract of circuit diagram attached)
• Shuts down. after a few minutes. (picture attached) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• LED lights up for a moment. TV is dead. Light on the power supply sometimes functions. (part of circuit diagram displayed)
• If mains switched off when in standby, it does not start up again. Light off. (part of circuit diagram displayed)
• Causes for appliance going into safety mode.
• Poor frame linearity when cold. Picture is distorted vertically. (with circuit diagram extract)
• No start-up. Standby LED does not light. (+ extract of circuit diagram)
• Undefined Stereo Mono switchover.
• BU508 defective after switching channel (when appliance is warm). (part of circuit diagram displayed)
• Destruction of the power supply BU. (part of circuit diagram displayed)
• Vertical sync does not stop. (picture attached)
• Low contrast. (extract of circuit diagram attached)
• Vertical collapse. intermittently. (with circuit diagram extract)
• No picture. on lower half screen. (picture attached)
• No picture, no sound. TV starts up and tube lights up. (part of circuit diagram displayed)
• Vertical collapse. (part of circuit diagram displayed)
• Works correctly but power supply BUT11 blows after 3 weeks. (+ extract of circuit diagram)
• Picture flickers for approx 5 mins after switch on when cold, then everything normal as soon as appliance reaches room temperature.
• Protective circuit starts up. (+ extract of circuit diagram)
• Does not switch to standby. LED turns pink. Picture remains. Sound mutes. (+ extract of circuit diagram)
• Picture size varies with picture content. (picture attached) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• Switches to protection mode. (+ extract of circuit diagram)
• The power supply BUT18AF shorts after operating for 5 hours. (extract of circuit diagram attached) (LEONARDOROYAL5750VT tips)
• Defective T7545. (extract of circuit diagram attached)
• 6cm black bar at bottom of picture.
• Unstable AFC. Noisy picture. (+ extract of circuit diagram)
• Fuse and PSU BU (BUT18AF) defective.
• PSU becomes defective after switch on via mains switch. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• PSU fuse blown. (+ extract of circuit diagram)
• After about 3 to 4 weeks of regular play, the BUT18 and the main fuse automatically blow. (with circuit diagram extract)
• Wavy picture. via AV. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• No teletext and OSD is hardly visible. The regular picture vibrates if appliance is switched to teletext. (+ extract of circuit diagram)
• Horizontal white line. (with circuit diagram extract)
• F5 displayed on a screen corner. Occasionally channels switch over to channel 1 or TV switches off.
• No audio. (picture attached)
• No colour in French standard. (extract of circuit diagram attached)
• Audio drop out or mute.
• BUT11 becomes defective after 3 days of use. (+ extract of circuit diagram) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• No red. (part of circuit diagram displayed)
• Mono/stereo display error. (extract of circuit diagram attached)
• Replacement of TDA8451 (IC7305). (picture attached)
• Slow start-up. Switches to standby. (picture attached)
• Discharging noise. via speakers.
• Strange noise in loudspeakers. (picture attached)
• Vertical foldover at bottom. (with circuit diagram extract)
• Occasionally BUT18 blows in standby. (with circuit diagram extract)
• Horizontal-BU 508AF has a s/c. After replacing this fails again after a few seconds. (picture attached)
• No power supply, protection circuit triggered. (+ extract of circuit diagram)
• No colours at start up 50% of the time on satellite channels. OK in HF and VCR. (part of circuit diagram displayed)
• No picture. TXT OK . (with circuit diagram extract)
• No light lit. (with circuit diagram extract)
• Vertical collapse. after a few minutes. Audio OK .
• Vertical roll. (extract of circuit diagram attached)
• TXT problem. Some characters do not display.
• Reduced horizontal size. intermittently. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Chopper transistor (BUT18AF) fails if appliance is switched on from standby. (picture attached)
• Switches to protection mode. intermittently. (with circuit diagram extract)
• No 9V. (picture attached)
• Set functions with the variac but BUT11AF blows when appliance is plugged in. (part of circuit diagram displayed)
• Lacks contrast. No reaction on the plus or minus key of the contrast button. Other commands are ok.
• Voltage too low. (extract of circuit diagram attached)
• Distorted picture. at top. (picture attached)
• Picture is too big or too small during horizontal amplitude adjustment.
• Chopper and line output transistors S/C. (with circuit diagram extract) (LEONARDOROYAL5750VT tips)
• Blue picture. after a while. (with circuit diagram extract)
• Dark picture. No picture. via SCART. No audio. via SCART. No RC functions. (part of circuit diagram displayed)
• No sound, even with in or out scart.
• BUT18 fails repeatedly. (extract of circuit diagram attached)
• No blue. (part of circuit diagram displayed)
• Darker bar on left of screen. (picture attached)
• The picture is indented (horizontally).
• As the set warms up the picture flashes cyan every few seconds. (extract of circuit diagram attached)
• Black screen. intermittently. (picture attached)
• PSU chirps. (with circuit diagram extract)
• Intermittent memory problem.
• Power supply crackles when power supply is low. (picture attached)
• BUT transistor becomes S/C either at switch on or after a certain period of time. (+ extract of circuit diagram)
• Replacing TDA2579. (with circuit diagram extract)
• Local dooming. (+ extract of circuit diagram)
• Hum bar.
• Low brightness (even after turning up the preset in the U200 module).
• Ballooning and incorrect picture linearity.
• No picture and sound. Buzz from power supply transformer.
• 17V instead of 140V. (+ extract of circuit diagram)
• Narrowing of line and frame then flashing of the picture. Screen turns dark after 10 mins. Picture ok when cold. (+ extract of circuit diagram)
• Horizontal stripe. (picture attached)
• Ragged verticals.
• Poor width regulation with brightness. (extract of circuit diagram attached)
• Contrast variations with subtitling in sets with BL-CRT. (picture attached)
• No operation. (+ extract of circuit diagram)
• Picture jitters and vertical bars distorted on cross-hatched pattern. Blue horizontal bars. (with circuit diagram extract)
• Power supply blows when put into standby. (extract of circuit diagram attached)
• No TXT. (+ extract of circuit diagram)
• After a few secs in standby, 7625 and fuse destroyed. (part of circuit diagram displayed)
• Over-voltage circuit active. (part of circuit diagram displayed)
• The bottom half of the raster is missing, with the top cramped.
• No function. Buzzing noise. (with circuit diagram extract)
• Appliance starts intermittently with no standby. (part of circuit diagram displayed)
• East/west raster distortion: width and shaping control do not function.
• EHT problems. (extract of circuit diagram attached) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• When switched off with RC, does not switch on again and LED remains off. (+ extract of circuit diagram)
• Vertical deflection is defective. Picture present, after a short time a line appears then picture disappears. (extract of circuit diagram attached)
• Only grey picture after being struck by lightning. TXT also runs. (picture attached)
• SOPS power supply repeatedly becomes defective. (+ extract of circuit diagram)
• Usys voltage of line output stage collapses to approx 48V. (+ extract of circuit diagram)
• Vertical synchronisation fault when hot and presence of white line, then picture disappears (extract of circuit diagram attached)
• Picture is not linear. Black bar at bottom of picture. (+ extract of circuit diagram)
• No red, green and blue go through correctly. TEA5101A and TDA8390 have been changed. (part of circuit diagram displayed)
• The output transistor of the power supply is defective. BUT11AF or 2SC3973B.
• No tuning.
• Repeated failure of CRT.
• BUT18AF blows in standby on the collector. (with circuit diagram extract)
• Grey screen. (+ extract of circuit diagram)
• Line end-stage has no function.
• No horizontal synchronisation. when cold. (part of circuit diagram displayed)
• Colour flickering during video editing.
• Regulation does not function without a load. (with circuit diagram extract) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• Horizontal line in the middle of screen.
• No colour. when cold. Poor colour. after warm-up. (picture attached)
• No HT output voltage of 148V. Voltage is present (approx. 158V) when disconnecting HT coils connector. (+ extract of circuit diagram)
• No picture, only audio via SCART. "Off air" picture displayed.. (part of circuit diagram displayed)
• Mains fuse O/C and BUT S/C. (part of circuit diagram displayed) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• No picture. Bright raster. Flyback lines. Audio OK . (part of circuit diagram displayed)
• Noise in picture. (+ extract of circuit diagram)
• Top of text is ringing. Intermittent text.
• Thyristor TR7670 breaks down after two days (loose contacts). (part of circuit diagram displayed)
• Poor E/W adjustment. Picture is narrow in the middle. (+ extract of circuit diagram) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• No MONO audio. STEREO OK . (+ extract of circuit diagram)
• Interference in picture. when cold. (part of circuit diagram displayed)
• Sound only at program switch-over. (picture attached)
• BUT18 and rectifier bridge blow every two days even after modifications.
• Line end stage U/syst collapses to approx. 48V. (extract of circuit diagram attached)
• Low sound on channel A. (part of circuit diagram displayed)
• Power supply too low (70V). (extract of circuit diagram attached)
• Dark picture. intermittently. (extract of circuit diagram attached)
• Defective SOPS. (part of circuit diagram displayed) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• No output voltage.
• Poor regulation. (extract of circuit diagram attached)
• In standby tries to operate spontaneously. (part of circuit diagram displayed)
• Dark picture with thin vertical stripe in upper picture. (extract of circuit diagram attached)
• Buzz in audio. (with circuit diagram extract)
• End stage transistor BU508 fails repeatedly at switch on. (with circuit diagram extract)
• White screen.
• Slow start-up. Audio OK . (part of circuit diagram displayed)
• PSU repeatedly blows up. (extract of circuit diagram attached)
• Set does not start-up after implementing SOPS kit. (picture attached)
• No sound or picture. Appliance appears to be in AV. (extract of circuit diagram attached)
• When switched to standby U1 becomes 60V. PSU goes to limiting. (picture attached)
• No synchronisation. when cold. (+ extract of circuit diagram)
• Intermittent power supply shut down, the picture goes off for a split second, the display flickering in sympathy.
• White picture on the right side in EXT1 mode.
• Loud noise. (extract of circuit diagram attached)
• Fuse, bridge rectifier and BUT11 in PSU blow when in standby for 10 mins. (part of circuit diagram displayed)
• Squealing from PSU. after start-up. (picture attached)
• Poor horizontal centering. (+ extract of circuit diagram) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• No channels. (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Does not store settings. (picture attached) (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• Shuts down. LED is green. (with circuit diagram extract)
• Dark streak on screen.
• Vertical foldover. (extract of circuit diagram attached)
• BUT11 in power supply defective after few days, or when in standby. (with circuit diagram extract)
• Sound was OK but there was no vision for the first 10 mins after switch on. (picture attached)
• No picture, no sound, no display, 148V is reduced to approx 50V. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Undefined Stereo-Mono switch over.
• Blows components. after a few minutes. (+ extract of circuit diagram)
• No E/W.
• Poor RC sensitivity.
• Buzzing from PSU. in standby. (with circuit diagram extract)
• Line BU blows after a moment. (+ extract of circuit diagram)
• Value of 3525 in the vertical amplifier situated in front of the line transformer towards tube 4 beside cushion 3521.
• Reduced vertical deflection. intermittently. (with circuit diagram extract)
• Lower picture third is dark. Upper picture is dispersed. (picture attached)
• Humming noise from transformer. Line output transistor fails repeatedly. (+ extract of circuit diagram)
• Line output transistor fails repeatedly. intermittently. (+ extract of circuit diagram)
• Cramped at bottom with slight foldover.
• T7637 blown. (with circuit diagram extract)
• Vertical foldover at top. (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• Memory loss. (picture attached)
• S/C in line output stage (7645). (picture attached)
• Undefined STEREO mono switch over. OSD mono STEREO display present. (picture attached)
• Sound and picture pulsating (2 times a sec) only via tuner.
• No OSD. intermittently. (with circuit diagram extract)
• Loud noises from speaker. Picture OK .
• Picture leans too much to one side, Black line visible in the picture. (+ extract of circuit diagram)
• TV blocked in F3.
• Sometimes the BUT18AF goes defective. (picture attached) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• Picture takes some time to appear. Dark screen then TV stops. Round colour spot which slowly disappears. (picture attached)
• Operating voltage stabilises at 50V. (with circuit diagram extract)
• No button operation. intermittently. (part of circuit diagram displayed)
• Reduced raster size. (+ extract of circuit diagram)
• Raster signal problem.
• Does not switch on from standby. LED blinks and goes off or changes to red and then no more functions.
• Vertical linearity is upwards a little sharp. Picture has shifted upwards. (part of circuit diagram displayed)
• Switches to safety mode at approx. 110 V mains voltage. (+ extract of circuit diagram)
• Smoke from +12V resistor. (with circuit diagram extract)
• Jagged picture. (extract of circuit diagram attached)
• Protection mode activated.
• Starts without picture and audio then switches off after a few seconds.
• BUT18 is defective. (picture attached)
• Dark picture. at bottom. Stretched picture. at top. (+ extract of circuit diagram)
• Power supply falls to approx 40V AC on the variac. (picture attached)
• No raster. (extract of circuit diagram attached)
• Dead. Humming noise from transformer. (with circuit diagram extract)
• Blocked. (+ extract of circuit diagram)
• After approx 10 minutes startup picture randomly disappears then reappears. No TEXT, only a mass of lines.
• Switches off intermittently. Standby LED (red-green) flashes. Picture drops out. (with circuit diagram extract)
• Dark screen. No OSD. (picture attached)
• BUT11A fails after operating for long time. (with circuit diagram extract)
• After approx 20 mins operating time appliance switches off. Then no Led. When you switch off completely with the mains switch and wait a time appliance starts again when you switch on.
• PSU transistor (BUT18A) becomes defective right after start-up.
• BUT18 blows at 100V on the variac.
• Dark screen. in TXT.
• Transformation in K' (only for stereo versions). (+ extract of circuit diagram)
• Picture shifted vertically.
• R3368 and R3369 burn up at switch on. (extract of circuit diagram attached)
• Line transformer noise. (picture attached)
• Chopper transistor (BUT18AF), rectifier diodes and mains fuse become defective instantly. (with circuit diagram extract)
• TS7625 (BUT 18AF) fails again. (part of circuit diagram displayed)
• No audio. F2 error.
• Excessive blue.
• BUT18AF is defective and is destroyed when appliance is switched on. (extract of circuit diagram attached)
• Horizontal output stage fails again after some time. (part of circuit diagram displayed)
• Intermittent line and raster synchro. (with circuit diagram extract)
• Distorted TXT. at top.
• Sound is noisy.
• Difficult to set up east/west and width controls. (with circuit diagram extract)
• Poor field linearity.
• No colour. (picture attached) (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• No tuner reception. Search display functions well but appliance does not pick up any channel. (picture attached)
• Red light flashes for approximately 3 seconds then zero.
• HT varies intermittently.
• Switching transistor in power supply goes short circuit (BUT18). (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• Buzzing from PSU. Motorboating noise from speakers. in standby. (+ extract of circuit diagram)
• Excessive horizontal size. Picture size varies with picture content. (picture attached)
• Dead. Red LED blinks. (picture attached)
• Green LED does not light up. Power supply oscillates. (+ extract of circuit diagram)
• Arcing. Picture tearing. Does not synchronise. (part of circuit diagram displayed)
• Type of transistor 7594 and value of resistor R3596.
• Slight E/W distortion. (with circuit diagram extract)
• Power supply problem. (with circuit diagram extract)
• Power supply fuse (18A) defective after 1 hr or less. (extract of circuit diagram attached)
• Blows chopper transistor. (+ extract of circuit diagram)
• Intermittent black picture with TXT. Intermittent TXT in picture.
• Ticking sound. (extract of circuit diagram attached)
• Red standby light then dead at switch on. TV starts up on the variac. (with circuit diagram extract)
• Local dooming - spots in the picture.
• Line transistor 7545 fails after approx. 3 secs. (with circuit diagram extract)
• 148V does not go pass 20V. (picture attached)
• White picture with flyback lines. (picture attached)
• Intermittently blown Wickman fuse 1534.
• Control micro processors.
• Videotext has turbulent text content in upper section. (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Green picture. after a while. (extract of circuit diagram attached)
• Reduced horizontal size. Vertical foldover. in the centre. (with circuit diagram extract)
• Local dooming, especially with high contrast. (+ extract of circuit diagram)
• On the test picture, distorted, vertical lines at top and bottom of the screen. (picture attached)
• Does not decode Canal Plus no the sound. Green LED flashes. (part of circuit diagram displayed)
• Search stops with good tuning.
• Black stripe on left edge of screen. Horizontal linearity is not correct. (part of circuit diagram displayed)
• Sound drops out.
• No vertical deflection. intermittently. (with circuit diagram extract)
• Capacitor 2545 in PSU burns. (picture attached)
• Humming noise from transformer. in standby. (picture attached)
• White square in a corner of the screen. (+ extract of circuit diagram) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Vertical stripes at left picture edge via channel 2 and 4. (part of circuit diagram displayed)
• No function. On start-up easy chirp is audible. (with circuit diagram extract)
• Switches off during operation. When it is switched on again crackling is heard from HT. (+ extract of circuit diagram)
• Black horizontal lines. (with circuit diagram extract)
• Loss of red, green or blue or excessive red, green or blue pictures.
• Coloured flash on channel change and VCR features. (extract of circuit diagram attached)
• Picture collapses. Pincushion distortion. (part of circuit diagram displayed)
• Poor OSD. Unusual colour of some characters. (extract of circuit diagram attached)
• No colours. After approx an hour colours appear with fluctuations. (part of circuit diagram displayed)
• BU508 blows after 1 or 2 days. (picture attached)
• Ragged picture.
• Interference in picture. No picture. No audio. (with circuit diagram extract)
• No audio. Picture OK . (+ extract of circuit diagram)
• Intermittent colour.
• No synchronisation. intermittently. (+ extract of circuit diagram)
• When cold, picture takes approx 2.5 mins to appear instead of 15 secs. When warm it takes 20 secs. (extract of circuit diagram attached)
• Appliance does not start up. Crackling. (part of circuit diagram displayed)
• Vertical deflection is defective. A piece is missing at the bottom and at the top the lines are pulled apart. (picture attached)
• No contrast control. (+ extract of circuit diagram)
• Incorrect reception. 33V ok. Picture ok in scart.
• No start-up from standby with RC.
• Finds emitters during channel search but does not stop. (+ extract of circuit diagram)
• Picture flickers intermittently, sound disappears. Picture reappears by itself, sound doesn't but can be activated with the RC.
• Picture rolls. (+ extract of circuit diagram)
• Picture flickers the first 5 minutes. Gradually becomes less but very visible in the dark portions of the screen. (LEONARDOROYAL5750VT tips)
• Extra protection for chopper transistor TR7625 (BUT18AF). (part of circuit diagram displayed)
• No functions. LED lit. . (picture attached) (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• Transistor T7545 (BU508AF) becomes intermittently defective at program switch-over via "+" and "-" on user control.
• Defective standby thyristor (SFOR5D43). (with circuit diagram extract) (OTTOVERSAND - LEONARDOROYAL5750VT information)
• Picture is affected by frizzy lines occasionally with crackling noise in the speakers and perhaps with a burnt smell. (with circuit diagram extract)
• No LED lit. (part of circuit diagram displayed)
• Does not switch to standby. Picture remains on screen. (picture attached)
• TV starts, has raster but no image and no sound. Display shows "FO". (picture attached)
• Top of TXT waves from side to side. (+ extract of circuit diagram)
• Defective BUT and fuse in the PSU. After replacing the appliance runs for several days until the fault occurs again. (extract of circuit diagram attached)
• Light green picture despite adjusting. Impossible to get red. (part of circuit diagram displayed)
• Line output transformer does not start up. (extract of circuit diagram attached)
• Power supply failure. (with circuit diagram extract)
• Defective line transistor. (with circuit diagram extract)
• Line output stage periodically fails. (with circuit diagram extract)
• Doesn't function with dummy load. (picture attached)
• Insufficient picture height which can be adjusted. Poor E/W.
• Black screen. Audio OK . (extract of circuit diagram attached)
• Supply transistor BUT18A becomes defective immediately after switching on the appliance. (+ extract of circuit diagram)
• Switching transistor of the SOPS power supply is defective. (part of circuit diagram displayed)
• Thyristor goes S/C when switched to standby. (part of circuit diagram displayed)
• Picture varies with beam current. (picture attached)
• The horizontal centering cannot be adjusted correctly. It may have shifted after the appliance has warmed up.
• Dark screen and bright bar at the top. Clock is strange. Sound present. (+ extract of circuit diagram)
• Mono/Stereo-indication switches. (picture attached)
• Line transistor S/C.
• Chopper transistor failure. (+ extract of circuit diagram)
• When put into standby tube remains lit. Picture cuts out normally. (picture attached)
• Picture width changes according to its content. Linear distortion on right and left sides over 5cm (no ondulation).
• Tuning search does not stop. (LEONARDOROYAL5750VT tips)
• Stop via RC, no red dot. No start up by pressing simultaneously on the switch and programme of the RC. On the contrary, stop and switch on via the switch functions. (+ extract of circuit diagram)
• With Blackline picture tubes in the EXT1-Mode a white field is visible on the right side.
• Picture shakes.
• PSU has no function.
• On channels 2 and 4 vertical lines on the left hand side of the picture.
• Picture pulsates on white background. (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• Goes into safety mode if it is left in standby then switched on via the switch. Starts normally if speaker or HT O/C. (part of circuit diagram displayed)
• No picture. No brightness. No sound. Picture tube filament on.
• Tuning unstable. (with circuit diagram extract) (service info for OTTOVERSAND -LEONARDOROYAL5750VT)
• Flyback lines. intermittently.
• Horizontal shift no function.
• Width of picture pumps according to picture content and narrows with a strong white. (with circuit diagram extract)
• Egg-shaped picture, picture is pushed upwards. Underneath 5cm black bar. (picture attached)
• Too high power supply. (extract of circuit diagram attached)
• POR signal too low. (with circuit diagram extract)
• Purity fault. (extract of circuit diagram attached)
• Wavy picture. at top.
• Vertical shaking. (+ extract of circuit diagram)
• Switches immediately to protection mode. Functions OK when protection mode is switched off. (picture attached)
• Thyristor fails in PSU in standby. Otherwise appliance OK. (part of circuit diagram displayed)
• No start-up. intermittently. (extract of circuit diagram attached) (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• High voltage unit is smouldered. (part of circuit diagram displayed)
• Spare part info: Value of C2546 and C2545 near line output transformer.
• No colour. intermittently. (part of circuit diagram displayed) (LEONARDOROYAL5750VT tip from OTTOVERSAND)
• Quick diagnosis (picture attached) (LEONARDOROYAL5750VT OTTOVERSAND repair tip)
• Pulsating, no start up. (picture attached)
• Blank screen. Audio OK .
• Snow in picture. (part of circuit diagram displayed)
• How to check the power supply without blowing BUT18AF.
• Dead. intermittently.
• EXT1 switchover is defective, terrestrial program remains.
• Power supply breaks down. (+ extract of circuit diagram)
• No picture. Audio and OSD OK . (OTTOVERSAND - LEONARDOROYAL5750VT information)