Marantz av7005 hum

My Marantz pre-amp has developed a high pitch hum from the unit itself even when its powered down. Its audible from about 6 feet away.

crowy193911-20-2013 8:44pm

crowy1939 OP Details Discussions Posts This discussion Message User 18 posts 11-22-2013 at 06:49pm Copy Comment URL Report Comment Edit Delete I think I found the problem. Its coming from the surge protector.
Post removed Aug 11, 2015