Replaced ic's and worked for a few seconds, then screen went black and no sound except for chirping coming from back.
Mine had the same problem. It turned out it was the power board that went out. The ic's might need to be replaced again, because they could get whacked out when the power board blows out.
Posted on Mar 08, 2009
SOURCE: philips 55" rear proj. tv...55pp9352
those ic's are to be replaced with original parts..also suggest audio ic..john
Posted on Sep 11, 2007
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same problem, right down to the chirping
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