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

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Sony Kp-51hw40 my big screen turn on real go picture. but after about 2 mins. it starts to turn a blue color and then fades all together no picture only sound what could be the problem

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Sounds like a bad solder connection in the sweep power supply. Not a repair for the novice I'm afraid. If you get it fixed before the set goes out completely, it should not be that expensive of a repair. Good Luck

Posted on Jun 04, 2007

  • Larry  Dillon
    Larry Dillon Jun 04, 2007

    A slight possibility that the blue tube could be going bad as well.

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Posted on Jan 02, 2017

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Follow the following solutions, this should fix up your trouble
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Sounds like you have a problem with the blue gun in your picture tube or its drive circuit. You might remove the back cover and gently tap on the neck of the picture tube using a plastic screwdriver handle while watching the screen in a mirrow. If the picture flashes back on or on and off then the picture tube is the problem. If this is a projection tv you have three separate tubes : red, green & blue. you'd need to tap the blut one.Gently!!!! Stargazer

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