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Pot cutting volume

RedsFan75

RedsFan75

Apr 26, 2007
1,479
34
Cincinnati
#1
I have an interesting issue.

I have a Squier VM Jaguar SS, it has been impossible to find a wiring diagram for it, but it's a P J config with VVT

Anyway, when I turn the bridge pickup to full volume it cuts all output on the bass. I've tried checked the grounds, and solder points, so I'm not sure what to focus on.

Any input would be appreciated.
Thanks
 
#2
One possibility is that the bridge pickup is shorted. Turn the neck pickup all the way down and just play the bridge pickup. Do you get a signal from it at any volume level? If not it could be shorted. An Ohmmeter could tell you for sure and and Ohmmeter could help you diagnose what the problem is pretty quick no matter what the problem is.
 
#3
That's one of the things that makes it so confusing....

I do get volume on bridge pickup until I turn volume to 10.

Basically it's along this lines....

Neck PU works great, with full range of operation. 0-10
Tone pot works great with full range of operation. 0-10

Bridge PU works 0-9 in any combination of the other pots

Turn Bridge PU volume to 10 Every thing is dead, regardless of what the others are set on.

Would love to find a wiring diagram for it, because there are 3 ground wires, one from bridge, one from bridge PU and one from neck PU. They all come to a single spot and are soldered to the back of a pot with the other grounds.

Can't find a specific VM Jag SS diagram even on Fender or Squier's web site. Can find plenty of PJ wiring schemes, but non quite like this one!

Thanks for the reply.
 
#4
The wiring diagram for this should be like any VVT bass. There may be some minor variations in where ground wires are soldered but that could potentially happen from bass to bass built by different assembly workers, regardless of what the wiring diagram shows. I'd try disconnecting the bridge pickup and seeing if turning the bridge pot all the way up still kills the signal. Then try turning the bridge pot all the way down and touching the bridge pickup lead to the output line. Do you still get a signal then?
 
#6
It could be a shorted pot. The last test I mentioned would help you sort that out. A bassist in Germany collects bass schematics and publishes a collection which you can find here. The download link is all the way at the bottom of that page so scroll down. The text is in German but you can sort it out with the help of the pictures and a German-English glossary at the end. He has the SS Jag in there on page 97.
 

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