Question about Sony KP-53HS20 TV

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KEEP FADING TO BRIGHT BLUE SCREEN

My television is about 5 years old and is now not working properly. The screen will be fine as soon as you turn it on but as soon as you leave it on for 5 minutes it starts fading into a bluish color and eventually the whole screen is a very bright blue color and you can't see anything. If I turn it off and leave it for a couple seconds and then turn it back on it will be fine for about 5 more minutes and then the same thing will happen again. Any ideas of what is wrong or how to fix this? Do I have to get a new TV? Any help is greatly appreciated. Amy

Posted by Amy Webb on

  • Amy Webb Feb 12, 2007

    Do you know how much this would cost to get repaired? Is it worth trying to repair it cost wise or is it better to cut my losses and sell it and get another one in your opinion? Can I test this myself or is this something I should let the professionals handle. Thanks for your response.

    Amy

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1 Answer

Bill Heronemus

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I'm about 90% sure it is the blue picture tube developing an intermittent heater to cathode short. I'm surprised the set isn't shutting down shortly after this happens. A service call will tell you for sure as it could also be a bad solder connection causing a similar symptom. My own procedure to check it out would be to GENTLY tap the neck of the suspected picture tube with a screwdriver handle to see if I could get it to come and go (Or get out my CRT tester and measure it with the power off). Obviously by holding the screwdriver blade you don't want to accidently short anything out as there is about 33,000 volts a few inches away from where I would be tapping. Nuff Said.

Posted on Feb 11, 2007

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