AC on chassis

[cryptozoo]

I've got a Premiere amp with a shocking problem. Well, OK, more of a tingling problem. There's approx. 9.7vac on the chassis. Can someone list some common causes of AC leakage like this?

[R.G.]

"Premiere"? Don't know the schematic from just that.

If it's a two-wire AC power cord, could be the death cap/switch leaking. Could be the transformer leaking. Could be a stray AC wiring strand brushing the chassis. Could be contamination on wiring or inside a switch leaking, could be a heater winding shorting to chassis, could be any AC wire. Could also be one of the PT secondaries leaking to chassis, as they all have a ground to chassis through signal ground. Could also be a leak inside the PT, although this is unlikelier than other things already listed.

If it's a three-wire AC power cord, there are Big Problems.

The real cure is to go through all the AC wiring. There's really not that much of it. And if it's two-wire, make it three-wire.