Thanks one and all.
They did put in an antistatic mat, but as this has happened even when I
had had my hand sitting on the fader for some time already I don't
expect that to solve the matter, although it might keep me from feeling
the current present.
I'll see if I can borrow a DMM from engineering, and check out Fluke's
devices.

Will Miho
NY Music and TV Audio Guy
Staff Audio / Fox News
"The large print giveth and the fine print taketh away..."
Tom Waits