Help with mcintosh mr 67


I have aquired a mcintosh mr 67, this tuner sounds flat in stereo, rich and full in mono. There is also a constant tone sound, all tubes light up, the osc-6ab4 appears weak(very little light.) Any and all help would be appreciated in solving this problem.
dsremer

Showing 1 response by kosher

Its 1 thing for the tubes to light up, another for them to be good, need to probably check and replace the bad ones, and you probably have a few, before you go another step. Check the solder joints at the RCA outputs, could be a bad one causing your hum, but bet on bets its the tubes. Then its probably going to need alignment. Then you will have a pretty good tuner.