how can i fix my amp?

Sometimes when measuring components in-circuit, other circuit elements interfere with the measurement.

To test a potentiometer temporarily unsolder the wiper wire and make two tests with your meter. Left terminal to wiper and check resistance as your move the control and then right terminal to wiper. Then a very small squirt of servisol contact cleaner.

You will be surprised how cheap a new pot might be at an elctronics shop - just a couple of bucks...

Good luck...

Peccavi
December 2009