The tv Tuner signal board it is the causes and problems.Because ur tv are intermitently shutdown after an hour of used.Mean the tv Tuner sisgnal board have some kind short in it circuitries,could be anythings,components parts wise.The tv Tuner signal board,that the board where the incomming broadcasting signal cable plug into it.U have some skills,like u can take things aparts and putting it back together again?Yes,tries websites like Shopjimmy.com,Ebay.com to buy a tv Tuner signal board for the replacement.
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