Help removing Ampeg V4 death cap?

[EWaffle]

I have a 1974 V4 head that shocks me every now and then, usually when touching my guitar strings and touching another person who is touching their strings,...

[dugdiamond]

I am looking for schematics for Alamo Paragon Bass Amp Head circa- mid 60's to early 70's. This would be an all tube model with two 12ax7's, one 7199(interesting...

[Dave Curtis, dB AudioTech]

...it tries to take it's owner with it.

The customer flipped the polarity switch, got a nasty shock and heard a loud pop. The amp worked after...