Should I be shocked that I was shocked?

[GeorgeHC]

I just picked up a nice late 50s/early 60s GE Ultravision TV this morning.

When I got it home, I started to clean it. I removed the knobs to let them soak in the sink for a while (they were quite grimy).

After a quick look inside and a vacuum of the chassis, I decided to power it up.

I plugged it in, and when I touched the metal on/off knob spindle I got one hell of a shock. The set powered up ok and seems to work well.

So is there something shorted out in the chassis? Or is this normal for one of these sets that has the "Chassis is connected to one side of power line" warnings? I find it hard to believe that the knob spindles wouldn't be isolated from the chassis.