BBE Sonic Maximizer Repair?
I just got a non-working BBE Sonic Maximizer for practically nothing at a garage sale (the guy who sold it to me told me it wasn't working). I was hoping it would be an easy fix, but no dice. It lights up but there's no sound when an instrument is connected, except that when I turn either of the knobs I get a kind of swooshing or crackling noise.
Any experts know where I might begin troubleshooting? I haven't taken it apart yet other than removing the bottom and looking at the bottom of the circuit board which looks fine. If I can't fix it, no biggie--I can use it for parts, knobs, the metal case and so on. I have a multimeter.