Question about Toshiba 35AF44 35" Rear Projection Television

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Picture loss! Picture disappears to a very thin line after watching a few minutes. Turn TV off and let it cool down for few minutes and picture comes back ?

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  • 67Swede Mar 13, 2008

    Thanks Crikett!

    I will have that checked out.

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  • 1,779 Answers

It sounds like cold solder joints on the vertical IC chip. Not a major deal. The entire board should be looked over for other joints becoming cold.

Posted on Mar 12, 2008

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It sounds as though you have what is referred to as a climental problem. In laymen terms, a transistor, chip or regulator is heating up and breaking down. The way a technician normally isolates this type of problem is by using a cooling agent ( freeze spray ). When the set heats up and the picture goes away, the technician sprays some of the cooling agent on a part of the board ( select a small area, about 6 inches square ) at a time and see if the picture comes back on. When you do finally get to the bad area, the picture should come back on for a short period of time until the bad part heats up again. After a period of time and by using the freeze spray, a person can isolate the exact bad part. Replace that bad part, and any filter capacitors hooked to that bad part and the set should work properly. As always, use caution and unplug the set before opening the set and when using the freeze spray, be sure not to touch any connections in the tv as they could produce shocks.
I hope this has helped and good luck on your problem.
Ed
NC Electronic
Mills, Wyoming
Have a Great Presidents Day

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