yup, just what the title says. jack's fine, solder's fine, cable's fine, amp's fine. have the pickguard off so as to make sure everything is a ok. when it goes back in place the short starts again..... what in god's name is going on? p style pickups, if that helps
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only shorts when the pickguard is on? AAARRRGHGHG
- Thread starter billsswills
- Start date
SirMjac28
Patiently Waiting For The Next British Invasion
SirMjac28
Patiently Waiting For The Next British Invasion
It could be the shielding that's causing the shorts put tape over those spots that have silver and then see what happens.
It's one of two things. Either the pickguard itself is causing an unintended circuit with the shielding on the back, or the pickguard is pressing down on a protruding wire and that is causing some mischief. It should be easy enough to tell -- are there any protruding wires? And does taping the shielding take care of the problem?
had it apart to fix the short! in the beginning it was just the jack, so i fixed that. then it got interesting and after all the usual suspects i wound up here. gonna try these things you all just suggested and see what happens, get back to ya in a few!
well, it's not shorting out so i can't tell what the problem actually is, or was. should it start up again i'll get back to it and come up with an answer
Hope it works out OK, but Murphy's Law dictates that it will start up again at the worst possible moment, like during a performance.
I am having the same issue with my mim pbass! I installed a new Seymour Duncan SPB-3 pickup. There was no shielding inside the cavity so I shielded it with copper tape. Now when I test the pickup I get a scratchy sound and when I put the pickguard back on the bass has no output at all. When I lift up the pick guard I get sound again! I have tested the wiring and all is connected well with my meter.would it help to put back tape around my pots and jack? Seems like they are grounding out against the shielding?
It could be a potentiometer connection, it could also be the output jack. Some control routes are tight around where the jack is positioned if it’s pickguard mounted and the hot lug can touch one of the walls. You may need to turn the jack.
I put black tape around the walls of the cavity around the pots, it quieted up but the g string pole pice of the pickup closest to the neck has some crackling. The volume pot has solder all over it and down the side! Was like this before I got the bass but I made it worse. Pretty sure it could use a new kit installed? At least it is quiet but far from being fixed! Stew Mac has a kit on sale where the 2 pots and Jack are already soldered for $54 until this evening maybe I should purchase it? I even thought about removing all the shielding because the bass was quiet with no issues prior to installing the pickup? Maybe go to a tech!
I’d probably just redo the wiring myself but if you don’t want to or don’t currently solder a predone harness is a good way to go. StewMac is typically quality components. There are others but I don’t know which are good or not.
Are you sure all the shielding is grounded?
Are you sure all the shielding is grounded?
There needs to be a connection between the shielding and the output jack ground. The Jazz Shielding Pictorial thread that’s pinned at the top of this forum should cover it. That will help with the noise if it’s not grounded. Ungrounded shielding is a big noise antenna. If you have a multimeter you could read ohms or continuity from the shielding to the output jack sleeve terminal although if the jack is in the pickguard and it completes ground by the back of the pickguard touching the cavity shield that’s a little tougher.
