[Music in a bottle]

Bought a model 70 a couple years ago, supposedly restored.......... So after sitting a couple years, I finally got up the courage to plug in the original cloth cord and snap on the power switch. Immediately, we had that classic 60 cycle hum, and fairly loud. Left switch made in louder in one position, quiter in the other. Volume had no effect, nor did the tuning. I noticed that after several minutes, that only one tube lit up. I know that the electrolytics are toast on account of the hum, but what about those non glowing tubes? It was not entirely dark in the room, but one was clearly lit up, the rest, no. No more experimentations until I can have the unit checked out. ;)