I've read the sticky on humming and buzzing and think I have tracked down the buzzing I get on my Fender Jazz bass but I don't know what to do next, short of taking it back to the repair shop.
It has a set of Noiseless SCN pickups on but if I use [i]any treble at all[/i] I get what sounds like a constant 'transformer' noise, like being up close to a flourescent light. It stops as soon as I touch the strings, control plate or bridge but it gets weirdly worse if I put my hand/body against the back of the bass opposite the pickups. Of course, its the same when I am playing because the back of the pickups are up against my hip. Its as if the pickups are sending a field out through the back of the bass and they really don't like it when you get close.
I thought of checking the packing behind the pickups and putting something in as a shield (lead or plutonium maybe...) has anybody got any recommendations or ideas about how to cut that 'field' effect down and, by the way, what [i]should[/i] be behind the pickups, if anything?
Also I wonder if the bass is earthed properly, is there a simple way to check (with a multimeter or a canary and a naked flame or something) that does not involve too much dismantling as it is nicely set up at the moment...
Thanks,
Jazzbob