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Hello; If you have a plasma TV, is fairly common to hear buzz noises. They can be always there or intermittent. They can get louder as the screen gets brightest. If the buzz is noticeable when you are at normal volume setting, the buzz is excessive and a PCB probably needs replacing. These buzz noises are almost never a sign of failure or safety. LCD TV's can also buzz, but the same applies. John

Posted on Jan 27, 2011

  • Philip Wang
    Philip Wang May 23, 2014

    Hi. I have a NEC 50" Plasma TV which has this buzz noise since day one. after about one year or more than one year it explored inside some elements. I guss it is some capacitor. the case you mentioned may not be all like that.

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