Hello. I am new here so hope this has not been answered already.
Just purchased a 4-yr old Fender Marcus Miller. The appearance is mint so I suspect is has not been abused. BUT there is a loud, 60hz buzz when plugged into my amp (Ampeg BA-112). This is not a soft, annoying buzz but loud enough that everyone leaves the room.
It gets worse when: - I touch the volume knobs or active/passive switch - Turn up the amp volume
It gets better when: - I touch the metal case on the instrument cable connector. Note: I need only touch it lightly. I am not pushing the connector in further to make a better connection.
There is no change when: - change volume levels on guitar - switch between passive/active mode - use different instrument cable - plug amp into outlet without ground - plug amp into different outlet/circuit - shut off all fluorescent lights in house - run signal through preamp (Fisher) - run signal in and through DI. Lifting gnd makes no difference.
Here is what makes it more confusing to me: - no buzz when my acoustic bass is plugged into my same amp (same cable) - no buzz when Fender MM plugged into different amp at church (same cable)
Most of this sounds like the guitar's jack is wired backwards. Not sure why it's better at church. Probably there's just less noise in the air. Maybe there's an host of angels crowded around the place acting as a divine faraday cage? Or maybe God's presence just plain calms all those EM waves?