[quote name='bremen' post='1232790' date='May 16 2011, 10:28 AM']Check that there's a connection between the bridge and the internal grounding (ie the pots, ground contact on pickups and jack socket). If you don't have a multimeter, try connection one end of a piece of wire to the bridge and the other end to the body of the jack. If the problem goes away, this connection is missing internally and should be redone.
Do you get the same problem wherever you are, or is it at a particular venue (one where the lights run off teh same ringmain as the amp, for example)? You may need to screen the control cavity with copper tape.
None of these jobs is particularly difficult with a Precision, beautifully simple electronics.[/quote]
Thanks Bremen, I shall try your first idea. sounds good.
with regards to your second point, the fault follows me no matter the location of where i play the bass.