Question about LG 30FZ4D TV

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Sound problem every now and then my tv emmits a high pitch hum. it is low in volume and will last for a few minutes and then vanish. its occurance is very ramdon, nothing for a few weeks then constant for a few days. it's not coming out of the speakers but instead from the back of the unit. it's a lg 30fz4d. thanks.

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Re: sound problem

Is it a hissing sound ? If it is a hissing sound and you can smell ionized air (ozone) then there may be some high voltage leaks (corona discharge) in the High voltage supply coming from the flyback transformer. This happens when there is a path to ground because of dirt dust or spider web, or your surrounding is humid.

Posted on May 22, 2007

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