Question about Sony KP-51WS500 51" Rear Projection Television

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Sony 51'' Projection HDTV Turns off after 6 seconds, has 4 blinks

Sony 51'' Projection HDTV KP-51ws500 Turns on, has sound for 6 seconds, and a green arch is in the top of the screen, and the screen is all black. Then shuts off, and blinks 4 times. Anyone have the service manual to this freakin' thing or know what's wrong?

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: color distortion and arched picture

you have a bad or maybe 2 bad stk392-560 ic's..
and or a bad pico fuse on your g board.. (there are two of them and 6 of them under your ic's
You can check with a vom meter. (resistors) Not ic's need special meter for that
Jason
Tmoore15@indy.rr.com

Posted on Nov 05, 2008

  • 126 Answers

SOURCE: Sony KP-51WS500 projection tv. Screen is green with curved lines

The green picture tube has an internal short. Happened a lot with that model. The tubes are no longer availible. But a reputable company called Video Display will rebuild the tube completely. But the tube must be pulled and shipped to them. Most repair shops would charge around $400 to $500 for the complete job.

Posted on Jul 09, 2009

  • 668 Answers

SOURCE: KP-51WS500 when on it blinked 4 times and has redscreen

Typically if you have a all Red Screen it is caused by either the Red CRT being shorted or The Red CRT Driver Board being bad.

Posted on Jul 18, 2009

roety
  • 585 Answers

SOURCE: sony kp-51ws500 blinks 6 times

Problem on the D board, overvoltage/overcurrent protection circuit, possible part # is A1300417A , Sony also has CRT issues so be prepared to spend between $400-$550 (D board) or $800 (if D and one CRT is NG).
gd lk
Eric

Posted on Aug 18, 2009

SD Tech
  • 14553 Answers

SOURCE: My KP-51WS500 rear projection is showing these

This was one of several Sony models that had bad picture tubes--the set uses a red, green, and blue tube.

There is something easy you can try that may help you get some more life from the set.

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Here is what you need to do.

1.) You need to remove the entire plastic piece below the front of the screen. You most likely will find 3 screws on either side in back that you have to remove.

2.) The grill will not come out easy, pull from one side and then when it starts to come loose from the other side(there are several plastic pegs that hold it in.) Then from the bottom pull out( most of these sets have square plastic tabs at the top that tuck in.)

3.) With the grill removed locate the inspection plate behind it (it usually has 6 screws.) You will have to tilt the grill to the left and on its side as several cables are connected to it--they are held in place with trash bag like ties that you can release to get some room.

4.) With the inspection plate removed you will see a fairly small (about 3 inch square) BLACK PLASTIC BLOCK WITH SIX CONTROLS-usually they are marked with whiteout so someone can tell if they have been adjusted.

5.) You need to look very close at the block with a flashlight----usually the top three controls are FOCUS--don't touch those.
The lower three are usually marked Screen and if you look very close you will see b, g, r(blue green red)

6.)Usually the GREEN will be in the middle.

7.) Once you locate the BLUE screen control have the set on and turn it down--if the set is shutting down you may have only a few seconds to try to turn it down---usually to the left with the Screen control.

8.) Best way to do this if the set is on is on a video input clip_image001.gif with nothing connected--you turn the Blue screen down until the set stays on and then very slowly turn it up until you see a slightly Blue screen with or without diagonal trace lines----turn it down slowly until the Blue screen and trace lines just disappear.

Let me know if you get it to work--Like I said if it is shutting down you may have to slowly turn the screen down a few times to get it to stay on.

If it works you may only be buying some time--if the blue tube caused this it may return at some point.

If all this information has helped you rate this solution as I do this here for free.

Regards, SD TECH

Posted on Dec 20, 2009

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