P bass pickup hum problem?
 

My 94 S1 switching P bass has a low freqeunce hum,iv'e fully screened it,and also star point earthing,have re-wired it as a standard P bass wiring,changed the capacitor,but it still does it,i guess this must be a bad pickup?anyone else had a simular problem?i don't want to buy another pickup unless i have to,Help Please!!

Do you get a hum that goes away when touch metal/strings/bridge?

If so, you have a shielding issue, there is nothing wrong with your wiring.

No,no humming when a i touch,or don't touch the strings.

Have you checked the ground connections?
Shielding is one thing, but it needs to be connected to ground.

All grounds are fine,i went over all connections re-soldering them just incase there was a dry joint,seems the pickup is the problem,even screened the pole pieces,but no luck.