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

vintage OP Details Discussions Posts This discussion Message User 21 posts 05-22-2003 at 01:58pm Copy Comment URL Report Comment Edit Delete Thanks guys for the advise. I'll open up the unit to do some spraying as what Detlof recommended. Anyway the unit was almost 3 years old.