Question about Toshiba 32AF42 32" TV

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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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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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Posted on Jan 02, 2017

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sometimes these can be sorted with a quick bit of solder to hold it in place on the main bord of where the coil is, but some times there is no cure due to very small braiding of the copper wire any attempt to solder may cause damage and breakage,

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Sorry to tell ya that the high pitch tone is a very common complaint ,mostly from our lady friends.. As their hearing range is alot more sensitive then their male counterparts. The "singing Coil" problem is nothing more then a loosely wound coil or deflection yolk and even sometimes even the HI voltage transformer. There are a few tricks to try to MINIMIZE only!! The singing of the coils. Such as siliconing the coils . Sticking wood pieces in between the coils or tranformer bases. But the really only way to eleminate this problem 100% is to replace the parts thats singing. And this is not a job for the handi-person.. Theres always a hi voltage issue thats present even when a tvs unplugged!!! Please seek a quailified service tech to assist you inj this nissue. GOOD LUCK

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