06 $$ grounding issue

[frettls]

06 double buck grounding issue
I just bought a lightly used 06 nirvana double buck with active EQ. It looks like it has never been played, a real gem.
I noticed that when I touch my finger to the rear pick up poles while playing, it sounds ungrounded. At higher volumes
the rear pick up hums pretty bad, but the front sounds great. The inside el cavity looks really clean...literally new.
I'm afraid to take it to a local tech.........is there some way to trouble shoot this?

I had this post in customer support but moved it here for some different ideas.

I'v pulled the back open and it all looks really tight. when I touch the eq switches while a note is played they buzz.
It seems to be only in the rear pickup in passive and active mode. The noise when note played lessens when I touch
the bride on both sides together.

I am aware of many other posts on this and many other forums concerning the MEC pickups, but I thought I'd ask.

Thanks,

B

 

[frettls]

Please keep in mind, there is no buzz until my finger touches the rear pickup poles. Not neck position, or tailpiece, only the rear poles.

Thanks,
B

 

[Florin]

Hi B, we read all the topics, no matter where you post them...

 

[schlobodan]

Don't touch the poles!

 

[golem]

`



The bass mebbe sat idle too much, as you say it
looks almost untouched and is 6 yrs old. An oxide
layer coulda built up on the resistance 'wiper' in
one or more pots. Why possibly just one ? Dunno.

Anywho, such a buildup could create a capacitance
on that surface. The problem is only on one PU so
that kinda rules out the master volume and bass &
treble EQ pots, as they serve both PUs in common,
leaving the PU pan pots [dual pots on one shaft] as
the prime suspect. I'd try spray cleaner on the pot
whose wiring leads to the rear PU wiring tunnel. If
it's not obvious visibly, just spray both.

 

[frettls]

Nice,,,,I did think of that, but..........I feels to good

 

[frettls]

To Golem, I did not think of that. Giving it a try.
Thanks,

B