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

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Blue screen When I first turn on my tv, model KP-51ws500 it works fine, but after a few minutes it slowly starts to turn blue. It gradually turns more blue until the whole screen is blue. You can hear the tv, but thats it. Please help. Thank you very much. Juan Martinez

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The blue picture tube has gone bad. Sadly they are no longer availible for that unit. But the blue tube assembly can be sent back to a company called Video Display. They rebuild the tube for a very reasonable price. The hitch is that it takes a professional tv tech to reinstall and align the rebuilt tube. Most respectable shops will do this work but the repair is spendy. Usually around $450 to $500 or more.

Posted on May 14, 2009

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Screen turns blue on my sony KP-51WS500


Common issue on this set--locate the master screen / focus block and lower the BLUE screen control until the blue cast is gone, only a slight adjustment will be needed.

Dec 16, 2012 | Sony KP-65WS500 65" Rear Projection...

1 Answer

I havea KP-51WS500 when i turn it on the color comes in fine...after less than a minute it fades to blue?


These sets have a history of bad picture tubes, the blue is most common, there is a way to without replacement of any parts to attempt to correct this.

you have to remove the entire grill on the front below the screen; it is usually held in either by two screws at the front (under little plastic caps) and or screws on the back on either side.

The grill will pull out and is engaged with large plastic tabs at the top; with it out since the front keyboard is mounted into it you lift and tilt it to the left. Remove the inspection plate behind it: look for the screen/focus block (see attached photo) and note the six controls: three are screen and three are focus----do not touch the focus ones.

They are usually marked (may be hard to see: r,g,blue) You want to locate the BLUE SCREEN CONTROL and with the set on on a unused video input turn the screen control SLOWLY (usually to the left) until you see no blue in the background; if you do it correctly all you should see is the Video 1 etc.


The idea here is to lower the blue screen setting just slightly-if it works you may only be buying some time as these sets are prone to problems like this.

I have done this several times and many see a few more years of use before they have to be replaced.

Let me know before you attempt this if any questions.


SD TECH





sd_tech_28.jpg

Dec 30, 2010 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Blue screen


u have bad blue picture tube , $300 - $500

Apr 15, 2010 | Sony KP-51WS500 51" Rear Projection...

1 Answer

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

Dec 20, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Kp-51ws500 all my channels have a blue hue to them Color adjustments on menu do not help TV is 5 years old, just started recently


if blue has retrace lines,turn down blue g2 control located through the front of tv after front lower bezel and cover boare removed

Jun 13, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Very fine blue lines veiwable when the background has black in it


Hello,
You need to adjust (actually bit decrease) G2 volts (calls Screen volts) of Blue gun.
If you are familiar with big TV repair and have electronics knowledge then let me know to guide you further.
thank you.

Dec 13, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

BLUE SCREEN THEN SHUTS OFF


cause: tuner i believe will cause tv to not find channels turn blue and turn itself off

Aug 18, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

KP-51HW40


sounds like the tuner may be going out on the set.

Aug 10, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Screen slowly turns blue...


I had blue lines showing up on my screen, then the other night my screen started to flutter the blue, bright to dim and back. So I followed this link to resolve the blue lines and the blue flutter was resolved as well. Hope this helps.

http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

Jul 26, 2008 | Sony KP-51WS500 51" Rear Projection...

2 Answers

Sony KP-51WS500


does it have blue video image?

Sep 29, 2007 | Sony KP-51WS500 51" Rear Projection...

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