Grateful Dead Music Forum

A place to talk about the music of the Grateful Dead 

Chat about Equipment Info
 #123511  by playingdead
 Sat Jan 19, 2013 8:20 am
Quick one for the wiring gurus ... what would cause a volume pot to suddenly cease to function so the guitar is at full volume regardless of where the knob is (even full off)? Loose ground? Or just a bad pot? This is on a PRS master volume pot.
 #123517  by milobender
 Sat Jan 19, 2013 10:31 am
I think it would be one of two possibilities... the most likely is the pot shorted, the second that a wire came loose and is shorting across the pot... most likely the pot is bad though... :smile:

Does everything else work correctly?
 #123519  by playingdead
 Sat Jan 19, 2013 10:52 am
Thanks. Tone control is fine, pickup selector works, there's just not volume control. Pops a little bit when the pickup selector is changed, I'm thinking it's a short, as well.

 #123520  by milobender
 Sat Jan 19, 2013 10:57 am
The switch may just be more noticable... you're listening carefully, and the volume is wide open... my switches always have some noise...

After looking at the schematic, I suppose it's possible that the volume capacitor might be shorted also... but it's got to be there at the volume pot... I'd try disconnecting the cap first, then the pot...