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

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Green screen but pip has color

I've replace the main board due to tv repair person telling me that this why I had green. Prio to replacing the board still has pip color but green, now that boards replaced still the same. What can I do to fix my problem.

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  • kevin0687 Aug 22, 2008

    The TV is 51HW57

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Follow the instructions from this website and you should be able to fix it.
If the instructions did not help you to fix it, there could be that the green tube is defective or a video amplifier IC on the blue CRT board.

Posted on Aug 22, 2008

  • Jaime Hernandez Aug 22, 2008

    I meant green CRT board instead of blue.

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1 Answer

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1 Answer

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if you tried adjusting all parameters in the menu and anything you do is not resolving it, go into any workshop to have them replacing the main board. It looks ugly this idea but now days this kind or repair is posible and the board is "affordable". find any workshop close to your area. The reason of this idea is because the main board controls all parameters in the tv and the other part who we can blame on is the screen itself so if the tv is repairable (economical to repair) the workshop sure it would tell you.

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I've been hearing alot about the main power supply board with this model. Mostly I hear that when the power button is pressed, the relay inside will click but with no other response from the TV. This tells me that either the relay contacts are no good or that there are some serious soldering problems on the board. That would explain why it will operate for a short time then quit unexpectedly. Thermal cycling might be stressing the already weak solder joints causing intermittent contact. Personally, I'd love to get my hands on one of these boards.

If it were me and I had nothing to lose, I'd pull the main PS board and touch up the relay section by resoldering (as I believe it is more likely to have bad solder joints then the bad relay contacts). If anyone tries this with positive results, please let me know and rate accordingly.

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