Buzzing sound while turning volume switch.

I have a BC21 and recently when I turn the volume switch, what could be the possible caused and is there anything I can do?

vintage05-21-2003 11:03pm

lafish Details Discussions Posts This discussion Message User 151 posts 05-21-2003 at 11:32pm Copy Comment URL Report Comment Edit Delete either the amp too old or your place too humid (like seashore or near hill) need to get tech man to clean the blemishes (if any)