Expert advice I posted a problem with my RCA audio shelftop model RS2640. The speakers only buzz, with no radio or cd sounds unless they are disconnected or muted. The first line of the response from your expert, Inteng, said "off course it will stop buzzing when you mute the speakers," stopping just short of calling me a complete idiot. The reason I mentioned that the buzz stopped when muted is because on your site someone else posted the same buzzing problem, but in that case muting the system didn't stop the buzzing. To give a response like that to someone looking for help is unacceptible. I think Inteng needs and attitude adjustment. Thanks David Dempsey

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I had the same problem with mine and the fix for it was to replace the Q401 transistor on the main board. Used a NTE382
replacement and it has worked fine.

Posted on Nov 15, 2007

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Sorry you feel that way David. they may have asked you that question so the buzzing can be isolated. If the buzzing DOES go away when you mute the unit, that means that your problem is in the preamp circuit of this unit and not in the audio output stage circuits. The only problem with these shelf type stereos, is the cost to repair. As most of the time, the part and labor cost exceeds the cost to replace, but you can certainly make up your own mind on this matter. If you feel this unit is worth it to you to repair, go for the repair! Good Luck with this repair.

Posted on Jun 20, 2007

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