Question about Vizio SV470XVT 47 in. LCD TV
The power source has failed - the sound is the source that autooscillates because even its protections have been damaged and are no longer capable of safely shut it down.
It's a big failure so call a repairman, ther's nothing more you can do.
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
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