Question about Akai PDP4294 42 in. EDTV-Ready Plasma Television

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Buzzing Noise A buzzing noise emits from the back of the TV when it's on but not all the time. I notice that when the picture changes the noise gets stronger then goes down until it goes away. But then it comes back. It is most annoying. Could it be a circuit board that is on its way out? Thanks

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  • lagmeson Jan 15, 2009

    Thanks for the response. I did take the back cover off and sprayed the power circuit board with a cleaning solution for circuit boards I bought from Radio Shack. Of course the TV was unplugged & waited for 4 hours to allow the solution sufficient time to dry. However, the noise was still there & I noticed that one of the two big round components on top of the board (oriented with the TV upright) has the top seal buckled (I have a feeling it is breached) and hot to the touch compared to the other one beside it. Also the buzzing noise seems to be coming from behind the cover of what looks like a heat sink. Tried to open the top cover but could not & left it alone before I break it. Maybe I should try and get the board fixed?

    Thanks again.


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It really sounds like your power supply is having problems with heat and not enough cooling inside your tv. You should if you can take the back cover off, also, and blow out all the lint and dust that has been drawn into the tv over time. Usually a couple of years is enough to build up dust and lint that can cause tiny static discharges inside your set. If there is a way of keeping your set cooler by placing it in a different position where there is sufficient room for air to circulate without restriction around it, that would help as well. The power supply the one with the power cord going to it from the inside should be your culprit. Good luck and God bless.

Posted on Jan 14, 2009

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Posted on Jan 02, 2017

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