Amp Hum

I have an old adcom amp that makes a fairly loud hum when it is on. Does anyone have any suggestions to get rid of this? Thanks

sailor63003-27-2001 10:14pm

massvm Details Discussions Posts This discussion Message User 126 posts 03-28-2001 at 06:11pm Copy Comment URL Report Comment Edit Delete Sailor, contrary to the above post, don't give up the ship yet! Is the hum from the amp chassis or the speakers? Is the hum constant, or intermittent? Is it source dependent?
massvm Details Discussions Posts This discussion Message User 126 posts 03-29-2001 at 11:18pm Copy Comment URL Report Comment Edit Delete Sailor, given that your amp is older, I would guess that the transformer is the culprit, either de-lamination of the plates, or mounting ... but given what I have read here, I would bet the transformer is the problem. And not a problem that should case you to dump your amp either. If you do a search in the forums on just the word "hum", you will find probably 50 different threads. Several recommendations for use of isolation pads between the transformer and mounts seems to have provided positive results for some posters. Certainly read the threads though, because external factors have been attributed to be problems as well. My opinion, for what it's worth.