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Its not a problem. i am looking for a mainboard for a westinghouse sk-42h240s wth part # 55.3YS01.001G. if you know where i can get one from please let me know. thanks. John.

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Have a look on ebay. There are often people selling odds and ends also check on Google, Yahoo etc.
Hope you find one.

Posted on Dec 29, 2010

  • john Dec 29, 2010

    Thanks for the reply. that was the first thing i did cant find any. maybe you can give me some clue of where to start trouble shooting this main board. the problem that i am having is that i have 5 volt sb power but no return 5 volt to the power supply from the main board. any help would be greatly appreciated.


  • specialistel Dec 30, 2010

    Some of the European power supplies run a 5 supply out and return it through lots of links. The idea being, the set is inoperable when a panel is removed. That in itself is a good idea but the drawback comes whena bad connection on one of the many connectors occurs.
    I think I would be looking at an edge connector with a solderjoint on it that has a black ring on it. What I mean is if you imagine a copyright symbal, with the small C in the centre an O but shiny, the outer () is a black or dirty mark circling the solder joint. That is a dry joint and I would expect to find a few. The other thing to look for is an unstable supply due to aged or open circuit electrolytic capacitors allowing a large amount of ripple to upset any processing and in turn shutting down the power supply.
    I hope that helps and I am now looking for a board 55.3YS01.001G now and will contact you if I find one.



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