Question about Akai PDP4294 42 in. EDTV-Ready Plasma Television

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Dead set, Akai 42" Plasma PDP4294, no power

Looking over very big and very complex SMPS board, all SMD fuses are good and main 8A line fuse is good, no shorted switching transistors or diodes found, no bulging caps.... any helpful suggestions or common failures would be a big help, thank you.
Akai PDP4294 (Samsung built?)
electricitym@yahoo.com

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  • Anonymous May 07, 2009

    It's a wonderful day.... Ahhhh, it is now FIXED and working great. I found cracked solder joints on a few of the switching power transistors and some of the big diodes and other heat producing parts. Also notice that the infamous Red caps C524 and C523 were discolored but they checked OK on my cap meter and also my ohm meter, however while I was inside the set after removing 1 million scews I decided to replace them anyway.

    I hope that my repair success helps someone.

    electricitym

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Porblem solved,
It's a wonderful day.... Ahhhh, it is now FIXED and working great. I found cracked solder joints on a few of the switching power transistors and some of the big diodes and other heat producing parts. Also notice that the infamous Red caps C524 and C523 were discolored but they checked OK on my cap meter and also my ohm meter, however while I was inside the set after removing 1 million scews I decided to replace them anyway.
I hope that my repair success helps someone.
electricitym

Posted on May 08, 2009

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