I just started having this problem. I have 2 guitars (a BC Rich Warlock and a Squier Strat), and only one of them (Strat) is working on my amp. Like the title says, I know for a fact that the amp and cable aren't causing this problem, because the Strat works just fine with them. The Warlock, however, doesn't make any sound when I plug it in with the exact same settings on the amp as before.
I believe this might be an internal problem, though, because the volume knob on the guitar has recently become very loose, jiggles a lot, and even falls off sometimes. Also, when turning it, only a few pops of static can be heard through the amp, but not the guitar itself.
Does anyone know what I might have to do to fix this issue?