Hello TB, I am hoping you can help me figure out why my bass is making a humming noise all the time. I've got an Epiphone Thunderbird with the all the standard settings, the humbucking pickups and all. It has three knobs, one for each pickup and one for the tone. Whenever the tone one is turned up a pretty loud humming noise comes out the amp, the sound turns louder as the knob is turned on. I've tried with different amps and it doesn't make a difference. I opened the wiring compartment and everything looks in order. If anyone has any ideas what the problem is and how can I fix it I would be really grateful. Thanks!