Question about Toshiba 50H81 50" Rear Projection Television

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Toshiba 50H81 Power but no picture or audio

Scott,
I took the power board loose on my set and looked underneath it and I found a burnt circuit. Next to F852 there is a wire jumper with the number 058 next to it. The circuit is burnt from one side of that jumper to one side of another wire jumper with the number 072 next to it. Any ideas on what could have caused this. Thanks.
John

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Its possible that flood leaked on board from a tube leaking.
clean the area and scrape the burnt area really good so that it won't conduct. then make a jumper from some small wire to the areas you need. check tubes on the bottoms of the metel areas not the crt for something wet... if this fixes your problem then cover your board with a plastic or foam sheet so that it drains forward away from the board. also when you find what tube it is, you may want to ask ways to fix it or how to keep it from leaking.
but if its not a leaky tube then you may have had lightning or power surge. may want to go ahead and check all parts connected to that area for a short. just to make sure there isn't another problem before you start it up.
good luck let me know.

Posted on Apr 16, 2008

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