Ok guys i need some help and info! ok my bass has been screwing up lately..ill plug the jack in to my bass and if i tilt my bass a certain way nothing comes out of the amp. Now i noticed latly when im tuning my bass to standard for jazz band that the tuner wants to say my E string is a low B and i only have a four string bass so i recharge the batteries in my tuner and it still does it. I tuned my other bass in drop C and it works perfectly so it's not the tuner. So today i go in to play some jazz and i plug it in turn my volume knob on and nothing. I tilt my bass and it hardly comes through and the goes out again. Nothing comes out and it's not the cable because i tried two diffirent cables today and still nothing. So i was hopeing that someone could give me some information on what the problem might be and what i need to do to fix this. I have had this bass for over 3 years never did any real work on it exept changing string and stuff. And if it helps any my bass im talking about is a P bass...there is no make.. it looks just like a Fender P bass in every way but there is seriously no maker of this bass...its a mystery bass but it's setup just like A Fender P bass so if that helps any then there you go! 
