Noise on A-string, Bartolini on Fender Jazz Bass

[chris_p]

Hi Guys, i have a problem with my jazz bass. There are two bartolini pickups and 3 Potis, two normal and one switchable (push-pull). First when i switch up (pull) nothing sounds...silence. And in the push position the A-string is noisy, only the A-string the others sounds fantastic (like a fender jazz bass must do ;-)). Please, can someone help me? how can i discover whats broken?
many thanx, bye
Chris

[luknfur]

FWIW:

see FAQ Dimento's Trouble Shooting Guide. Apparently the push/pull is either not wired for it or it's wired incorrectly. Unlikely there's something wrong with the pups on the A, probably string related vibration and the pups just reading the vibration. If you get the buzz from both pups, probably a setup issue. If only one reverse the pup, if you get the same results, you know it's not the pup. Do a search in setup for related fixes.

You didn't say if you'd worked on the bass, bought it that way or what? The end result's the same but it's a different situation if you did it.