Shocking chassis

[lowell]

Got a real Vibroverb here. Was lightly nipping me. Has 2 prong cord. I stopped immediately and measured. Got 130vAC on the chassis referenced to earth. I clipped out the death cap and now have 220Vac.

What gives? Just curious. And yes I'm first replacing the cord before continuing. I also measured DC resistance from mains hot and neutral to chassis. No reading, OL, at 6M range. Checked secondaries and the readings seemed normal. Filament and HT are center tapped.

[dstrat]

have you tried flipping the AC plug 180 degrees?

[Enzo]

That^^^

That would make a difference.

Without a chassis ground through the powr cord, the chassis can assume a charge with respect to ground and have no way to drain it off.

[cjenrick]

i bet a three prong cord would fix it,