The tv Tuner signal board is the causes and the problems.That the board,where the antenna signal wire plug into it to receive the incomming broadcasting tv signal channels stations.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish tv Tuner signal board for the replacement.
The problem is the HDTV tuner module, replace the voltage regulator U8 with a AMS1117-2.5 IC will fix the problem.
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