Question about Sony Grand WEGA KDF-55XS955 55" Rear Projection HDTV

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My Sony Grand Wega is about 6 yrs old. Latley I have noticed the screen will go black for about 15 seconds. It still has sound though. The LED light flashes a few times while the screen is off, then the screen comes back on. Can this be the beginning of the end for my tv?

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  • 132 Answers

Maybe not. There are some electrolytic capacitors on the power supply board that commonly go bad that can cause this. They are very inexpensive if that is the problem. They will be swollen or domed on top rather than flat if they are bad. It could also be problem w/ the backlight inverter board, but I would start by checking the caps. Either way it should be fixable. Good luck.

Posted on Sep 02, 2010

  • jasonorvin75 Sep 02, 2010

    thanks for the response. do I need to remove anything to get to the power supply board?

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  1. If your Sony Wega will not turn on, the front green light blinks, you hear a faint whirring sound and the green light turns red and flashes, it probably means the lamp inside the set is no longer working. If you noticed the screen beginning to dim in the preceding days or weeks, this most likely is the cause.

  2. If the green light flashes and the picture comes on momentarily but then goes off, and the green button flashes until the set restarts, then the seal around the lamp mount is loose and needs to be refitted.

  3. If the picture on your Grand Wega cuts in and out and the green standby light flashes, both of the set's STKs need to be replaced. STKs are small chips on your television's circuit boards and are identifiable by their labels. The specific STKs used in your Grand Wega TV will be identifiable by the numbered labels on top of the STKs.

  4. When you plug in your Sony Wega and hear a loud popping sound, it's probably caused by a defect in the high-voltage circuit. Let the professionals take care of this one.

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Read more: How to Troubleshoot a Sony Grand Wega ' eHow.com http://www.ehow.com/how_5243554_troubleshoot-sony-grand-wega.html#ixzz1EoY37gpC

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