I'm not sure if this belongs in the repair or the electronics section. Apologies if I have it in the wrong spot. I have an Ibanez edb600 that no longer works through an amp. When connected, no sound. I've validated the amp works with another bass and replaced the 9v battery in the bass. No change. The volume pot is obviously problematic - it no longer is smooth and no longer has stops. I was thinking of changing out the pot to see if that's the problem. But before doing so, wondered if it there's anything else on the board that should be checked or even if it makes more sense to swap out the preamp for a newer one. Any advice welcome. Thanks.