Been having this same problem for months!!! It wasn't happening when we first got it, though. It drives me nuts, and my husband doesn't even notice unless I grab the clicker to stop the picture for a second. That seems to right it for a few minutes, and then it's off and running again! I have been searching all over the net to find how to fix this. I have no Home Theater System and no Sound bar. Just the Smart TV.
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