I have a stock Ibanez BTB33 Volo bass. It's been fine for years. Picked it up the other day after sitting unplayed for a while and got a nasty noise. Hard to describe. It's somewhere between a mid frequency buzz and static. Almost like the cord wasn't pushed in all the way. Here are some facts about the bass and what I've tried. The bass is all stock. I've tried it with different charged batteries, different cables and different amps. And I tried the amp in different parts of my house. The noise stayed the same. The noise is the same (volume and intensity) where ever I set the bass' volume. The volume of the plucked note does change when I increase the volume however. The bass' eq does affect the sound of the static/buzz. All three bands. The pickup balance affects the tone of the noise. I went into the control cavity and poked the wires around to see if any were loose. I touched all the wires and it did not change the noise. I tapped on the body and it did not affect the noise. At one point while playing/testing, the noise stopped. I did nothing apparent. The noise was quiet for about two minutes then it began again. I have no idea what this was about. Any idea what's causing the noise and a possible fix? Or is it time for a new preamp? Thanks.