AC30 disaster?

[Oddvar]

Hi again.  I have build the AC30 by Hoffman, and i worked just fine.  There hase been many issues, but they were fixed.  Today though, the wholde amp started to act microfonic, every single item makes noise, crackling as H##l.  I have checked it all and I am not understanding what possibly could cause this?

[uki]

... started to act microfonic ...

That could be a bad tube.

[Oddvar]

It's very strange.

[sluckey]

You may be jinxed.

[Oddvar]

It was the 10k resistor going from the middle pin on the basspot to ground.  Problem solved.  What could cause that?

[shooter]

What could cause that?

see reply #3