Peavey Ecoustic 112 Noisy Reverb

[smackoj]

Hi friends; It's been a very long time away. A lot of things got put on hold including amp repairs. I have been working on a Peavey Ecoustic 112 amp lately. Everything is running smooth and quiet except the reverb which is important for the new owner. I have reverb when I turn the pot up but I also get like a 60hz hum. I tried re-soldering, cleaning the pot, switched out the tank with 2 diff ones but nothing quiets it down? Does anyone have a suggestion? Looking through the Peavey Forum I found evidence that Peavey amps are known for noisy reverbs. Someone on there suggested using an isolation transformer which I have not tried.