Question about Samsung HP-T4254 42 in. Plasma Television

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Mosfet keeps exploding

Replaced bad caps and replaced one mosfet but when I went to turn it on a different mosfet blew up

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  • craig champagne Dec 11, 2012

    originally my tv would not turn on and just click, i replaced 2 bad caps noticed a mosfet with scorch marks underneath it so i also replaced that as well

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  • Samsung Master
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Well its clear you have a nasty short somewhere, problem is with no schematics for this set how will you find the problem much less get the correct part?

Might be better to shop for a different board to replace this board with.

Posted on Dec 12, 2012

  • craig champagne Dec 12, 2012

    ohh I see, I wasn't sure if this was a common problem with these tv's and a common part that could be replaced. Would I be able to pull up the schematics online or is that something that the manufacturer has? Or would i be able to find this shortage with the right tool? Normally I would go out and buy a new board but I am running a little low on cash at the moment

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Hello,

If you have a popped cap then the mosfets are blown. They blow as soon as the cap shorts and pops. You need to replace both mosfets and the 220uf caps and test the fuse with a multimeter I would bet its blown too.

Buddy
Corporate Computer
www.ccl-la.com
tech@ccl-la.com

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Please rate my answer,
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