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

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Screen shakes / jumps vertically on my Sony KP-51HW40

When I turn on the TV, the screen shakes vertically for several hours before settling down. The TV is a 51" Sony rear projection TV model # KP-51HW40. Any help is greatly appreciated.
Thanks,
Marc.

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  • mgtedeschi Feb 13, 2009

    Thank you for your help.

  • Anonymous Apr 01, 2014

    The illustration of the circle Alpaor for this Model

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The jitter is called a vertical sync problem. The problem is on the "A" board. It can be replaced or rebuilt but will be quite expensive to service.

michtech

Posted on Feb 13, 2009

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My KP-51HW40 clicks off after running for a period. The red power light blinks when it goes off but screen stays dark. When TV is shut off for a while it restarts and runs fine. The "On"...


Hi,
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This is rear projection tv that has three picture tubes (red-green-blue) inside to generate picture that projected at front screen. These three picture tubes must be drive with correct drive voltage to produce good picture of each color.
Solution for your tv problem is Screen Voltage adjustment that can be done easily if you are handy with electronics stuff repair.
Let me know your expertise level to guide you more and if you feel unconformable by tv repair then local tv repairman will help you to adjust white balance in tv.
Hope these info will help you.
Let me know if you have additional questions.
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