I bought a bass fender bass dimension IV, and I leave it to a friend to fix it , but have noise problems.
1) by touching the electric bass pickups with the fingers makes noise.
2) When you turn up the treble volume also makes noise.
See if you can help me.
Use Google translator, I write from Spain. http://www.doctorbass.net/v5x/c/?iddoc=1000170374