Question about RCA D56W20 56" Rear Projection Television

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Great pic but bad sound

If the sound setting is set to automatic or stereo, all of the lower chanels have a loud buzzing noise and the higher chanels have it off and on. the right speakers have the buzzing noise no matter what setting. Called a repair place and they said something about an amp? If I knew what part is bad and what it looks like I can remove and replace it. Help

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Your problem could be the main amp board, the signal panel or the audio processor board. You will need to get a service manual for this set to diagnoise these problems. Good Luck

Posted on Apr 01, 2007


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Posted on Jan 02, 2017


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Hi jackkikay,

A faint buzzing sound is normal - - that's the high-voltage plasma discharge simulating lightning in a thunderstorm. If the room is dark you should be able to see a faint bluish-purple glow of the metal grid on the plate(s) inside. This should somewhat louder as you increase the setting.

It should not really be so loud that is stands out in the background of normal noises (refrigerator running for example). If the buzz is loud - - like something is shorting-out internally (loud crackling sound), that would signal a different problem - - I'd need more details about what you're observing. Approximate purchase day, specific model, number of plates, general condition of the interior would all be helpful if you deem the buzz to be too loud for normal operation.

If I can be of further assistance, let me know. If this helps or solves the issue, please rate it accordingly.

Thanks in-advance for using,


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