I'll be the first to admit I know nothing about electronics, but I'll try to explain anyway: I just got a 70s 'Lawsuit Era' Jazz bass shipped over from the US to the UK. Everything was, I'm told, working fine before it was sent over, but when I got in and plugged it in I got no sound out of the bridge pickup. Even with headphones, there's no discernible note at all. Weirdly though, there is a hum if I turn the bridge pickup up, and there is a faint clicking/buzz if I tap the magnets on the pickup. The buzz goes away if I touch any metal part of the bass (bridge, control plate), which makes me think grounding issue? The wires are all connected as they should be, but a few of the solder joints (particularly the split white/blue wire going to the top of the volume pot) look like they may have a fracture in them. Before I bust out my rudimentary soldering skills and go over the joints, does anyone have any ideas as to what else it could be? Thanks!