The buzzing in the sound is usually caused by capacitors in the sound circuit drying out. The need to be replaced, or you can do what I did. I disconnected the speakers from the TV and ran the sound through my stereo system via the audio-out port in the back. The audio out port has it's own seperate circuit. As for the power issue, I now have the same problem and am trying to fix it. That's how I stumbled across your post. Good luck. Dan

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