I have a Sharp Aquos LC20SH21Uand picked it up second hand. we have had it for a couple months and all of a sudden the picture went black. we still have sound when the screen goes black. When we turn the TV off for a couple minuets and turn it back on the picture comes back. This will last for about 30-45 min. then the screen goes black again. We cannot afford to buy a new tv and are looking for an inexpensive solution.
Capacitors on the power pack are going bad they need to be replaced that should fix the problem.
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