pm-600 buzzing

hello all! one of my pm600 shut-off and is now buzzing when i turn it on. any ideas as to where to start troubleshoot? beware i am a complete noob and just getting into repairng my equipment. i can solder but only testing i can do is with a dmm at the moment

I would recommend getting in touch with Tom at Vintage Hi-Fi of Pittsburgh. He can repair it for you. http://vintagehifipgh.com/

a little far from me as im in cali. maybe i find someone closer

a little far from me as im in cali. maybe i find someone closer

Well, ok, go to rolland at hi tech in oregon