PRS Studio Narrowfield Noise

[MescaleroTX]

Good afternoon!

My studio seems to have developed a bit of an issue with noise on the Narrowfield pickups. In positions 2, 3 and 4 there is quite a bit of hum. In positions 1 and 5 there is none. Any ideas for where to start in order to troubleshoot this issue?

Also, I replaced the bridge with a BKP Cold Sweat years ago now but the noise problem is a newer thing, I've just finally gotten fed up with it.

All help appreciated!

 

[alantig]

Bad solder joint on the blade switch? Or maybe the blade going bad? I’d guess the wiring for the middle pickup if it’s like a Strat in that those three positions are where the middle pup is engaged.

 

[MescaleroTX]

So I got to poking around with a pencil and nothing moving seemed to make it better or worse. I suspect a grounding issue might be the case or as you said, possibly the blade switch. I can't seem to locate the wiring diagram that used to be on the PRS main site, however. Does anyone happen to have that backed up for the Studio models with two Narrowfields?