I just got a bass from eBay. Ibanez SR305, probably about 2-3 years old since it has the arm cut and flat top (yes, I know it's an SR and not a GSR). It came with DX5 pickups (stock) and a 2 band preamp (stock). It was used, but the electronics haven't been messed with (everything is perfectly neat and all solder points are perfect). So, I plug it in and it makes a siren sound like a capacitor charging. So I figure it's a blown capacitor and start poking around (I know that's a bad idea but I wanted to discharge the capacitors). After poking around the siren goes away and is replaced by this annoying buzz that sounds like synth bass. And when I plug it in, the bass makes the siren sound really quick and then drops off to the synth bass sound. The synth sound gets worse when boosting either treble or bass and volume control up or down doesn't help. It is not the cable or amp because my BTB and GSR work just fine with a perfect clean signal. Thanks for reading my ramble, suggestions?