Question about RCA RS2640 CD Shelf System
Of course it will stop buzzing when you mute the speakers. From the limited description, it could be anything from a power supply to loose wires in the system between the speaker leads and the motherboard. Best bet is to take it in to a technician and get a pro's answer. If he wants to charge more than what it's worth to you, get a new one.
Posted on Jun 19, 2007
I had the same problem with mine and the fix for it was to replace Q401 transistor on the main board. I used a NTE382
replacement and it has worked fine ever since.
Hope this helps
Posted on Nov 17, 2007
Tips for a great answer:
Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversible, try that. Sometimes the buzz is from an attached device. Make sure all audio cables are plugged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's. I've also seen variable track lights induce noise but it's usually minor.
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