Hey folks. I've got a parts PJ that I play a lot. Pups are Fender '62 split and a SD Jazz bridge pup. I am noticing a fairly strong hum from the Precision pup. Even with the vol all the way down. Seems to lessen a bit when I touch the jack plate, but still there. Quiet at full vol. This has been professionally soldered. My American P is quiet as a mouse. Any ideas? Thanks for any responses. Bob
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PJ hum issue
- Thread starter bassdog
- Start date
If you paid for the work, take it back to the pro who soldered it. Sounds like there is a ground issue. A friend of mine put one together and had the same thing, I wish I could remember exactly what we found with it, but it was easy to spot.
I have the exact combo in my ESP 204 and it's very quiet. The Duncan solo is a little noisy and has less output than the p (as expected ) but I rarely solo it and usually blend in a little with full on '62 pickup.
LoveThatBass
Supporting Member
"When I had a P/J bass I put a "noiseless" J pickup in it to stop the hum I was getting."
This hum seems to come from the split P pup. With the J pup off at zero vol. the P pup hums unless its vol is full on. Wierd. Never noticed before and I've been playing this bass for two yrs. Gig with it all the time too.
This hum seems to come from the split P pup. With the J pup off at zero vol. the P pup hums unless its vol is full on. Wierd. Never noticed before and I've been playing this bass for two yrs. Gig with it all the time too.
Will a J pickup not void the hum-cancelling properties of a P pickup, or at least one half of a pickup? I would try and match manufacturers, and even lines of pickups that are known to work in a PJ configuration.
If it is humming with the volume down then that suggests a general goof with the ground-side of the circuit in the bass.
If it is humming with the volume down then that suggests a general goof with the ground-side of the circuit in the bass.
I appreciate the replies. I've put the bass back together and am going to check this hum out at other places besides my home. Maybe just something about this bass and my home that I have not noticed before. I was playing it last night and I think it was pretty quiet. Maybe no issues other than my own. I need to investigate further. Until then, gonna play the thing.
Bob
Bob
LoveThatBass
Supporting Member
Maybe they mistakenly used 2 of the same polarity coils or they miswired one. Try reversing the 2 coil wires to the pots. If no help then put back as it was and reverse just one of the coils (1/2 the P Humbucker).
Intersting thread.
Ive had the same Fender pup in two P basses over the past few years. I put it in my Squier VM PJ recently and got pretty much the same thing. I tried reversing the wires but it made no difference. At the time the bridge pup was a stock single coil.
I took the Fender out and put it back in my CV and its been fine.
I put the Fralin i had in the CV in the PJ and that too worked perfectly.
I never did get to the bottom of this.
Ive had the same Fender pup in two P basses over the past few years. I put it in my Squier VM PJ recently and got pretty much the same thing. I tried reversing the wires but it made no difference. At the time the bridge pup was a stock single coil.
I took the Fender out and put it back in my CV and its been fine.
I put the Fralin i had in the CV in the PJ and that too worked perfectly.
I never did get to the bottom of this.
Wait -- is it humming even when the P volume is set to zero?
If so, check wiring -- suspect P volume pot's 3rd terminal isn't properly connected to jack gnd / pickup return.
LoveThatBass
Supporting Member
