Pick up not working?

heptagram · Post by **heptagram** » Tue Sep 11, 2007 10:34 pm

I just got a 4003 '01 and when I push the toggle down for the bridge the bass goes dead and only works with the toggle switch placed in the middle, giving me far too much low end...

When I pull the toggle all the way up for the neck it sounds just the same as placed in the middle... What could be the issue?

Cheers!

Josh

heinpete · Post by **heinpete** » Tue Sep 11, 2007 11:14 pm

Looks like your bridge PU is dead! Check the output with an Ohm-meter at the PU wire ends and the PU coil endings (carefully!).
If so, then contact Sérgio for help (rewiring).

bob_the_bass · Post by **bob_the_bass** » Wed Sep 12, 2007 12:02 am

More likely a bad contact/switch problem

heptagram · Post by **heptagram** » Wed Sep 12, 2007 2:09 am

I think it might be a bad contact/switch problem as well

jaybic · Post by **jaybic** » Wed Sep 12, 2007 2:33 am

I recently had that problem - turned out it was just a bad contact in the jack. Little contact cleaner and it sprung back to life.

jwr2 · Post by **jwr2** » Wed Sep 12, 2007 3:08 am

it could be a ric-o-sound wiring problem, it could be a bad toggle switch, it could be a dead pickup, it could be a broken wire somewhere under the pickguard ...

heptagram · Post by **heptagram** » Wed Sep 12, 2007 3:09 am

Jason

Thanks for the info! What would be the best way for me to clean the contact with?

Cheers!

jaybic · Post by **jaybic** » Wed Sep 12, 2007 3:30 am

um...I had some contact cleaner and sprayed it into the jack...about as simple as that. I'm not very knowledgeable about wiring diagrams, switches, pots. I've never even had my pickguard or truss rod cover off. All I've ever done is changed the strings...lol. Lucky for me that was it. Good luck in your repairs.

heptagram · Post by **heptagram** » Wed Sep 12, 2007 3:34 am

Just checked and the bridge wire isn't attached at all...

johnallg · Post by **johnallg** » Wed Sep 12, 2007 11:13 am

Most intertesting - it goes to one side of the toggle switch. Use Joey's schematic to see where:

http://www.joeysbassnotes.com/TipsPics/4003%20wiring.pdf

heinpete · Post by **heinpete** » Wed Sep 12, 2007 8:22 pm

Josh, that was the best case scenario!

heptagram · Post by **heptagram** » Thu Sep 13, 2007 2:20 am

I'm taking it in to the Bass Centre here in Melbourne next week to have it sorted out

Printed out the schematics as well

Cheers!