Well...I sorta did that. I used some DeOxit and also adjusted the contacts. Everything sounded good when I first started up other than that the tubes needed a warmup.
After 20 minutes or so I heard a buzz from the speakers...my first though was that the CD was trashed...but then I saw the right rear KT-88 glowing like an incandescent bulb...and then the amp went silent.
I pulled the fuse. The filament looked unbroken but there was a dark spot at the midpoint of the glass tube.
I opened the case and visually inspected everything and saw no signs of catastrophic failure. I cleaned all the dust inside and out and did a more thorough job of cleaning and adjusting the contacts. I'm running out to get some fuses. I wish Guitar Center had rectifier tubes.
Is there anything else I should check or look for?
Thanks in advance....