Question about Sony KP-51HW40 51" Rear Projection Television

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Sony kp-51hw40 Our tv all of the sudden gets a blue screen and turns off

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  • tfarvin Sep 15, 2008

    I have the same problem. My TV turns on has picture and sound at the beginning and after 1 minute or so it goes blue. I appreciate any help on resolving this issue. Thanks,



    Tony

  • Anonymous Sep 26, 2008

    I have the exact same problem...I have sound and picture for about 1 minute, and then it goes blue screen, and then quits...The TV is only 6 years old...I bought it for 2400...seems like I should get more out of it than this. In addition, before this problem I had red curvy lines going across my screen for about 2 years...not a very good product...usually love Sony products, but I think they missed the boat on this one.

  • spainkenneth Dec 06, 2008

    tv stays on for 3-4 minutes at first then for 1-2 minutes. picture is fine but then blue flash on screen and tv turns off.

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If the problem was related only to the trace back lines (curved) on hte screen the signal strength can be adjusted in the potentiometer (variable resistor) located in front down part of the TV cabinet (when you remove the front cover of the speakers and control panel. In case you never removed that panel, there are 2 screws with little plastic cover in the bottom of the TV set (one on the right side/ another on the left side). After removing the screws, lift the whole panel and remove it. Be careful not to stretch the cords or break any of them. in the bottom-center you will find the variable resistors, one for each color. It come with drop of paint to avoid factory adjustment to move. Find your color of problem and adjust the back trace signal strength until it disappear from the screen. A slight adjustment will make it. It's very sensitive.

Posted on Sep 25, 2012

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  • Sony Master
  • 8,617 Answers

Blue CRT is most likely shorted. When the blus screen comes up are there concave lines in the screen as well?

Posted on Sep 07, 2008

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