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My Vizio HDTV blinks OFF/ON and sometimes will show the "NO SIGNAL" screen. It happens mostly when there is a big sound change. Always happens at the start of the show "THE BIG BANG THEORY" and during football instant replay. I have Time Warner Cable .. they checked their line inputs and suggested replacing the digital cable box. No change.Vizio tech support said "I never heard of this problem"Any ideas?
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