Potential grounding issue?

[Jono Bolton]

I have an issue with a buzz from my P Bass. With the volume up full, and the tone turned all the way down, there's no buzz. With the volume full, and the tone turned all the way up, there's a bit of buzz, but once I start to roll the volume back down, the buzz increases, but disappears once the volume is rolled all the way down. 

The bass has two grounds; one to the bridge, and one to a lug in the cavity. Everything seems to be wired up correctly. The issue doesn't seem to be from my amp, or the wiring in the room, as when I plugged my Jazzmaster in, there were no issues. Any suggestions?

Edited May 5, 2021 by Jono Bolton

[Geek99]

Paging @KiOgon - my money would be on faulty pots

Edited May 4, 2021 by Geek99

[Jono Bolton]

On 04/05/2021 at 23:03, Geek99 said:

Paging @KiOgon - my money would be on faulty pots

I've ordered some new pots and wire and will nick the cap and socket from the current wiring and have a bash at rewiring it at the weekend.

[Jono Bolton]

Seems it was dodgy pots. Put some new CTS pots in, and some Gavitt cloth wire, and there's no hum at all. Did a fairly tidy job too, if I do say so myself.