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EURAS System

WD25SL / WINDSOR [TV]

The EURAS repair tip database for professional technicians and service engineers supplies the following faults for WD25SL / WINDSOR.

List of fault symptoms:
  • Clicking noise. after start-up. (with circuit diagram extract)
  • Shuts down (intermittently).
  • No start-up. LED is red after operating mains switch. If switched on (via program key on user control or RC) LED lights green and then goes off.
  • Power supply blown. (extract of circuit diagram attached)
  • Adjustments in service menu.
  • Vertical end stage line.
  • No contrast. at start-up.
  • No colour. (with circuit diagram extract)
  • No signal (intermittently).
  • No start-up from standby. Green led flashes twice then switches to red.
  • Horizontal line.
  • No start-up from standby. LED is red .
  • Dead. Standby LED flashes . (part of circuit diagram displayed)
  • White retrace lines on screen. (with circuit diagram extract)
  • Negative picture. (extract of circuit diagram attached)
  • Vertical collapse. after a few minutes. Flyback lines. on upper half screen. (extract of circuit diagram attached)
  • Green picture. Flyback lines. (WD25SL tip from WINDSOR)
  • Sizzling at start-up.
  • Red standby light changes to green then switches back to red.
  • No picture. Raster appears at start-up. (WINDSOR - WD25SL information)
  • No start-up. LED is red . Clicking noise. (part of circuit diagram displayed)
  • Low HT. (extract of circuit diagram attached)
  • IC (TDA6108JF) fails after 12 hours operation.
  • Appliance goes to standby if switched on with RC. Standby LED flashes green.
  • Line output transistor fails repeatedly.
  • Ripple on verticals.
  • S/C in mains transformer. (+ extract of circuit diagram)
  • Picture too small.
  • Leaking in HT transformer.
  • Blue screen.
  • Switches to standby. after a few seconds. LED is green.
  • Picture flickers with 3 coloured lines in upper side of picture.
  • Tripping. (part of circuit diagram displayed) (WD25SL tip from WINDSOR)
  • White vertical stripes at upper picture edge. Picture becomes blank after a while.
  • Poor East/West correction. (picture attached)
  • Grey screen. Audio OK .
  • Does not always switch on. Pumps after switch on.
  • No picture. No OSD. Audio OK . (extract of circuit diagram attached)
  • Line output stage (BU2508D) fails. R629 (2R7) burnt.
  • E/W fault. intermittently.
  • Reduced horizontal deflection. Reduced vertical deflection. Vertical foldover. at top and bottom. (service info for WINDSOR -WD25SL)
  • Blank raster. (WD25SL tips)
  • Switching transistor in primary PSU is S/C.
  • Channel shifts after station is changed. After retuning, everything is OK.
  • PSU pulsates. (with circuit diagram extract)
  • Vertical fault.
  • Faulty OSD. (+ extract of circuit diagram)
  • Horizontal line. in the centre. (with circuit diagram extract)
  • Line transistor blown shortly after switch on. (extract of circuit diagram attached)
  • Transformer failure.
  • Line BU transistor becomes hot.
  • Hum bar. No RC functions. (part of circuit diagram displayed)
  • Burst electrolytic capacitor C829 (47uF/160V).
  • Picture lost, then screen is black and RGB test lines moving in top half of screen.
  • Blank raster with 2 red, green and blue horizontal lines, approx one third down screen. (with circuit diagram extract)
  • PSU pulsates. LED blinks . (part of circuit diagram displayed)
  • Appliance fails and can only be started after a long time. (WINDSOR - WD25SL information)
  • Switches to protection mode (after a while).
  • Intermittently Q605 blown. (extract of circuit diagram attached)
  • Switches to standby. after a few seconds. (part of circuit diagram displayed)
  • Dark picture with three coloured lines in upper third. Sound OK. (extract of circuit diagram attached)
  • No picture. intermittently (after a while). Faulty TXT.
  • Q802 is S/C. (extract of circuit diagram attached)
  • Tuning drifts. (picture attached)
  • Flickering picture. Bent verticals. (+ extract of circuit diagram)
  • Poor picture. (+ extract of circuit diagram)
  • No TXT (intermittently). (with circuit diagram extract)
  • Picture and sound interference.
  • Picture foldover. Switches to standby.
  • No TXT. (part of circuit diagram displayed)
  • Blue picture, no drive. Sound OK.
  • Flyback lines. at top. (extract of circuit diagram attached)
  • BU2508AF is S/C. (picture attached)
  • Low audio. (+ extract of circuit diagram)
  • Vertical foldover at top and bottom. (extract of circuit diagram attached)
  • Tripping. at start-up.
  • No E/W correction.
  • Picture reduced horizontally in 16/9 and 4/3 mode.
  • No PIP. (+ extract of circuit diagram)
  • Shuts down after start up. Led blinks red/green a few seconds.
  • Dark picture. Raster OK .
  • PSU ticks in standby and hisses in full load mode.
  • No functions. LED is green.
  • No picture. Audio OK . (part of circuit diagram displayed)
  • Picture collapses intermittently with E/W fault. White line in the middle. Sound crackles.
  • Moire on band 1. (WINDSOR - WD25SL information)
  • Picture size varies with picture content.
  • Low brightness.
  • Colour varies. Flickering picture. (extract of circuit diagram attached)
  • Mains transistor fails immediately again. Netztransistor stirbt sofort wieder
  • Vertical collapse. (with circuit diagram extract)
  • Line BU508A fails again immediately.
  • Switches to standby at switch on, LED turns green for a sec.
  • Picture in only one colour with flyback lines.
  • Reduced horizontal deflection. (WD25SL tips)
  • No function. PSU is dead.
  • Locking codes misfunctioning.
  • Tripping. LED blinks .
  • No start-up from standby. LED flickers .
  • Line output transistor and TDA4605 is also defective.
  • White screen. (part of circuit diagram displayed)
  • Excessive height. Foldover at top. Lines missing at top of picture. Different coloured vertical stripes across picture. (picture attached)
  • Picture too small. Distorted picture. (extract of circuit diagram attached)
  • No picture in PIP mode. (part of circuit diagram displayed)
  • Dead. Power LED lit . (with circuit diagram extract)
  • Reduced horizontal size. Standby LED flashes .
  • Power supply problems.
  • Dark picture. (+ extract of circuit diagram)
  • Snowy raster. Reduced width. No tuning. Unable to access SERVICE mode. Locks up if picture menu entered.
  • Picture is OK, but it is necessary to readjust G2 at each start-up, otherwise screen becomes black.
  • No front panel function.
  • Takes long time to appear. Comes up quicker if first anode control adjusted. (picture attached)
  • Dead. Standby LED does not light. (with circuit diagram extract) (WD25SL WINDSOR repair tip)
  • Weak contrast. (+ extract of circuit diagram)
  • Slow start-up. (with circuit diagram extract)
  • Occasionally slight flashover in the picture.
  • No functions. (+ extract of circuit diagram) (WD25SL WINDSOR repair tip)
  • Dead. (with circuit diagram extract)
  • Stuck in standby. (with circuit diagram extract)
  • Severe picture bowing after a minute or so.
  • Excessive blue. (picture attached)
  • Black screen with three colour lines. Sometimes half a picture appears. (WD25SL tip from WINDSOR)
  • No functions. when cold.
  • D611 fails. Q605 becomes hot.
  • Programs are not stored after switch off.
  • Stuck in standby. Green LED flashes .
  • Picture width is too low and perhaps smoke develops. (picture attached)
  • Clicking noise. in standby. (+ extract of circuit diagram)
  • Vertical collapse (intermittently).
  • Relay trips. (picture attached)
  • No luminance. (part of circuit diagram displayed) (WD25SL tips)
  • Shuts down (after a few seconds).
  • Piecrusting in picture.
  • Grey picture with flyback lines.
  • Disable hotel mode.
  • No video signal on screen, picture dark, OSD display OK.
  • Insufficient height, about 3" down at top.
  • Chirping. at start-up. Trips. (+ extract of circuit diagram)
  • Excessive horizontal size. (+ extract of circuit diagram)
  • BU2508 fails.
  • No horizontal drive at pin 40 of deflection processor. (+ extract of circuit diagram) (WD25SL WINDSOR repair tip)
  • Black edges on top and at the bottom. Picture is available though all adjustments are set to minimum. Cannot be adjusted and no storage.
  • Flyback lines. (with circuit diagram extract)
  • After start-up front LED is red, becomes green shortly and then red again. Dummy load lamp lights up shortly and then goes out.
  • Picture shifted vertically. at bottom.
  • Slightly cramped blank raster with flyback lines. In centre of raster there are coloured lines, slight E/W bow. (with circuit diagram extract)
  • No horizontal or vertical deflection (intermittently).
  • Distorted picture (N/S), like in 16:9 format. Bars on top and at the bottom.
  • Ticking noise from speaker in standby (Burst mode). (picture attached)
  • E/W fault (after a while).
  • Pincushion distortion. (with circuit diagram extract)
  • Noise from PSU. Strong hiccup. (extract of circuit diagram attached)
  • PSU pulsates. in standby.
  • At power up green LED is on for 2 secs, then flickers, set goes to standby. (extract of circuit diagram attached) (WINDSOR - WD25SL information)
  • Shuts down. after start-up.
  • Black screen.
  • Excessive horizontal size. Pincushion distortion. on sides. (with circuit diagram extract)
  • Does not accept SCART input. (with circuit diagram extract) (WINDSOR - WD25SL information)
  • Narrow, bowed picture. E-W faulty.
  • Picture collapses. Shock sensitive. (WINDSOR - WD25SL information)
  • Standby LED flashing green. (+ extract of circuit diagram)
  • Only one primary colour with flyback lines.
  • Picture twitches. Horizontal cogging. (WD25SL tips)
  • Goes off with a bang and bright light from the inside.
  • PSU blown.
  • Stuck in standby. Squealing from PSU. (WD25SL WINDSOR repair tip)
  • R809 blown. (+ extract of circuit diagram)
  • To avoid anode voltage peaks. (extract of circuit diagram attached)
  • LED lights briefly green after switch on. PSU starts up but appliance goes back to standby.
  • White screen. Retrace lines. (+ extract of circuit diagram)
  • White, bright screen with flyback lines.
  • No line drive. (extract of circuit diagram attached)
  • Dark picture. OSD OK .
  • Excessive HV. (with circuit diagram extract)
  • Distorted sound. Volume cannot be adjusted.
  • Snow in picture. (+ extract of circuit diagram)
  • Dead. LED is green.
  • Standby is red and becomes green for 2 secs after switch on.
  • Reduced vertical and horizontal size. (with circuit diagram extract)
  • Shuts down. after a few seconds. HV OK. .
  • No start-up. Standby LED lit .
  • Spots in picture. in the centre. (picture attached)
  • Picture shifted to the right. No colour. (part of circuit diagram displayed)
  • No HV. (part of circuit diagram displayed)
  • No deflection. Switches on with RC, display changes to green. Standby display available.
  • Tripping sound from power supply. (+ extract of circuit diagram)
  • Slight flicker after five mins, worsens as time goes on. Colour flickers ON/OFF. (part of circuit diagram displayed)
  • PSU transistor fails at start-up. (extract of circuit diagram attached)
  • Dark picture. Colour varies. Colour flickers.
  • Excessive horizontal size. intermittently. E/W fault. (picture attached)
  • Reduced horizontal size. Audio OK .
  • LED flickers. Light rhythmical noise, otherwise no function.
  • No front panel function. RC OK.
  • Picture appears briefly but resorts to four horizontal lines. Sound OK. (extract of circuit diagram attached)
  • Bent verticals.
  • Black stripes in white picture areas.
  • Enter service mode.
  • Horizontal lines.
  • No picture, no sound. Standby diode flashes briefly green at switch on.
  • No vertical deflection. (part of circuit diagram displayed) (WD25SL WINDSOR repair tip)
  • E/W fault. (part of circuit diagram displayed) (WD25SL tips)
  • Slow start-up. No start-up. intermittently.
  • Bright green raster with flyback lines. (+ extract of circuit diagram)
  • No start-up. Standby LED tries to go green then goes back to red.
  • PSU destroyed. (WD25SL tip from WINDSOR)
  • LED blinks green.
  • Does not switch to standby.
  • PSU pulsates. Switches to standby. after a while.
  • No audio in SECAM L mode.
  • No horizontal deflection. (with circuit diagram extract)
  • Clicking noise. (with circuit diagram extract) (WD25SL tips)
  • PSU pulsates quickly, audible via speaker. (part of circuit diagram displayed)
  • No tuning. Poor synchronisation. Shifted phase.
  • Audio output chip IC100 fails repeatedly.
  • HV sparkling. (part of circuit diagram displayed)
  • No or poor synchronisation. (part of circuit diagram displayed)
  • No picture (intermittently). (WINDSOR - WD25SL information)
  • IC802 (MC44604P) fails repeatedly.
  • Switches to standby intermittently. Comes on with RC but switches off after a while.
  • Whistling. (WD25SL tips)
  • Bright picture. (with circuit diagram extract)
  • No tuning. (part of circuit diagram displayed)
  • Compressed picture at the top.
  • Blank screen with 3 coloured (R G B) lines across screen.
  • Switches to standby when picture appears or picture pulsates slowly via AV or at low brightness. (service info for WINDSOR -WD25SL)
  • No functions. Standby LED flashes .
  • No picture. Bright raster (after a few minutes). (part of circuit diagram displayed)
  • Stretched picture. (+ extract of circuit diagram)
  • Goes to standby, when pressing Volume, Mute or Menu buttons.
  • No startup. LED lights up at switch-on.
  • Blurry picture. (part of circuit diagram displayed)
  • LED blinks, then switches to standby.
  • Dead. LED blinks .
  • Vertical lines. (+ extract of circuit diagram)
  • Reduced horizontal size. Pincushion distortion. on sides. (with circuit diagram extract)
  • Standby OK, green LED flashes twice briefly after start up attempt and goes to standby.
  • BU2508D fails immediately at switch on. (WD25SL tips)
  • R717 (2K2) burnt repeatedly.
  • Defective Q605 (BU508AF) line output transistor. (with circuit diagram extract)
  • No audio. in NICAM . (WD25SL WINDSOR repair tip)
  • Wavy picture. on sides.
  • Over/under scan.
  • Reduced E/W on all widescreen scan formats. (extract of circuit diagram attached)
  • Chopper transformer fails.
  • Switches off from standby, LED is briefly green, then goes back to red.
  • Picture appears for several secs, then becomes dark and switches to protection. Sound OK.
  • Low contrast. (WD25SL WINDSOR repair tip)
  • Power supply fails. Loud noise in the chopper.
  • No picture. after warm-up. Audio OK .
  • Picture too large. E/W defective. (WINDSOR - WD25SL information)
  • R914 is defective. (with circuit diagram extract)
  • E/W fault. Switches to protection mode.
  • BU2508AF fails intermittently. (with circuit diagram extract)
  • Picture quivers depending on brightness.
  • Ticking noise. No start-up. (part of circuit diagram displayed)
  • No picture (dark with barely visible spots). (extract of circuit diagram attached)
  • Intermittent picture and audio or does not find channels.
  • Washed out picture. (picture attached)
  • Excessive brightness. Flyback lines. (picture attached)
  • No adjustments are possible.
  • Bright horizontal stripes.
  • E/W fault. Screeching noise. Line output transistor fails repeatedly.
  • Black screen. Audio and OSD OK .
  • Comes on in standby, then if power button pressed blinks pale green.
  • Reduced vertical size.
  • Pulsating picture. Shuts down. (picture attached)
  • No OSD. (part of circuit diagram displayed)
  • Operates in short bursts. (WINDSOR - WD25SL information)
  • Shuts down. intermittently. Burning smell.
  • Moire or line in picture with some band 1 stations (eg. channel 4) on certain aerial equipment.
  • No TXT just number 100 in the left corner.
  • Voltage Usys is only 35V.

With this service information, you may repair WINDSOR WD25SL faster/better when it fails.

When WINDSOR WD25SL fails , these symptoms are known and EURAS knows the remedy/solution.

Tips are coming from EURAS customers, workshops and payed technicians from all over the world. WINDSOR WD25SL fails can be better solved.

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With help of this list a solution is found often when WINDSOR WD25SL fails.


Additionally to repairtips or service information WD25SL is linked to 148 components (IC's and/or transformers) in the Tectra database, through which you can identify electrical compatibilities (crossreferences) in appliances.


Chassis information is available (which chassis is built in into WD25SL ).

EURAS system also knows 484 appliances having the same chassis as WD25SL and can easily list them.

For WD25SL there are 3 compatible appliances known and can be listed.


In the repair discussion pinboard for WD25SL there are 114 replies to questions asked about 85 different repair problems.
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Last updated: 10. Aug 2008 21:09:24 MET, doccode ISO9002AS168EKA200805C [cachelite] EURASMOP

Responsible for the content: EURAS International GmbH, Eime, Germany. All rights reserved, EURAS database V2.0 (C) 2002-2008. All brand- or productnames are copyrighted by the respective manufacturer of the appliance and are only being used for identification purposes.