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yesterday I Clean inside the tv (all boards with compressed air and a vacuum) then I put a personal fan in the back of my tv, it works fine no faults in 8 hours.... may be this problem is overheating.... the internal fan works fine (I think) i will change this fan for a bigger then I will reply for ...

Hi! when I turn on my tv everything is ok, but after 7 minutes i heard static noise like spots then, the sound has gone! after this i turn off my tv and wait for 4 minutes, the sound come again and after 7 minutes the sound has gone again, this is a cycle. do you can help me?? very clear colors and ...