Okay, so this is strange. I've seen similar threads, but I'll include everything I've already checked. I don't know what else to check. So at first it was a popping and buzzing sound whenever I touched metal, knobs and bridge. Now, I have no sound at all coming through the bass amp. Bass and amp were purchased at the same time a year and a half ago. Fender Pbass deluxe with active/passive toggle and an Ampeg ministack cabinet/head combo. If that helps. I have taken the bass into Guitar Center, not thinking it could be the amp at first, to look at the wiring. The tech said it was all good, so he plugged it in and it works on their amps fine. So now I'm thinking it was the amp, or the cord I was plugging it into, or something else. So I went home. I plugged it into the same cord and nothing, tried another cord, still nothing. So I plugged my Les Paul guitar into my bass amp, same cord, same settings on the amp and it plays fine. So my bass plays fine on other amps, and my guitar plays through my bass amp with same cords I was using with my bass fine. But my bass won't play anything through my bass amp. I don't know what else to try. Does anyone know why a bass amp would play a guitar fine but not a bass? I'm really confused. Any help would be appreciated here.