It's really buzzy and distorted, but not in a good way. Think square wave. I say think square wave because I can't actually look and see whats going on. My o-scope died a couple of weeks ago.
When I was playing it, I had the multimeter hooked up to the bias ports on the back (1-ohm resistors) and one of the EL34's reacts how it should. Hit a chord and the current jumps from 45mA to 150-ish mA. I plugged into the other one and when you hit a chord, it jumps, but in the wrong direction. It drops to 15-20mA. I swapped tubes and it stayed at the same socket. I swapped OT primaries and grid wires, to keep the NFB from becoming PFB, and it followed the grid lead. Long story short, I narrowed it down to the grounded-grid side of the PI. I tried a different PI tube. I resoldered the socket. I replaced the socket. I replaced the grid-to-ground cap. I replaced any wires anywhere near that socket, and the problem won't go away.
I'm ready to shoot the dang thing, but someone else paid for all the parts.
I'd post pictures, but I think the PI tube in my digital camera went out also. The pictures come out looking like a really bad Picasso.
Any ideas?
Matt
EDIT: Not sure why I put this in Technical Discussion and not Trainwreck. Probably the same reason I can't seem to hook up a PI.
