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High pitched rattling not associated with TV audio

With the power on and sound off, a high pitched tone, often varying, is eminating from the set. When a non-syncronized channel is selected (snowy screen), the high pitched tone almost disappears, leading me to believe that it may be a mechanical resonance, maybe in the high voltage section.

I am tempted to open the back and just press here and there with a wooden stick to isolate the sound but it's a very heavy set and it would be nice if someone has experience with this problem first.

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Re: high pitched rattling not associated with TV audio

Quite possibly the HVT arcing, which will eventually fail.

The problem with them arcing is they can be doing damage to other components.

Best to have it checked by an experienced tech.

Posted on Jan 06, 2008

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