Vigier Guitars

Hello, I'm the owner of a five string Passion bass from 1999, and unfortunately it has a horrendous hum when I use it.  I've taken it to get shielded, but the problem is with some component of the pre-amp, not something that can be solved through shielding.  I was just wondering if anyone on here has a pre-amp from this series of basses which they would be willing to sell me; or, if vigier themselves have any of these hanging around I'd be interested in it. 
Thanks for your help, 
Kyle 

I doubt that a component is faulty (very very rare), if you shut the preamp input and you have no noise, the problem comes from the single coil pickups.

Thanks for the quick reply! 
Is there a way I can check that myself?  Or is it something a tech should check?  I said it was the pre-amp because that was the repair tech's thoughts on it, he said it probably wasn't the pickups.  

After thinking...
First look at the silencer. If there is silencer on the board, a little trimer, it might be turned all the way up, which is wrong. Look att he manual on how to set it up. http://188.130.104.14/sites/medias/produit/pdf/221.pdf
If it not that :
Look where the pickup cable is connected on the board. Shunt where the pickup ground is sold with where  its hot wire is solded (+ with -)
Make sure the balance is turned all the way to this pickup.

Okay, so I've taken a look at the silencer, and it seems to be set correctly.  Darn.
With the pickup connections, am I correct that the white wire is ground, and the red wire is the the hot wire?  If so, you want me to connect a piece of wire between where the ground and where the hot wire are on the board?  Is this to test if the pickups are the things creating the noise (will this just route the pickup through the output, bypassing the rest of the circuitry?)  Am I putting this wire in permanently, or is it just for testing?  And should I only try it for one pickup at a time (test it with it set to only the one pickup with the shunt in place for that one?)
Sorry for all the questions, I'm not used to making any changes to this sort of thing.
Thanks!
 
https://drive.google.com/file/d/0B-XiGXBjcItdMGZPX1FuYktPQ0U/view?usp=sharing
I've put a couple photos of the board in this link just to be sure; the files are too large to upload here.  

This is what you have to do

But if you do not how to do this kind of thing, show your bass to a technician.
The wire of your pickpus is not ours, are you sure their are Vigier pickups ?

I will probably take it to a tech then, I don't want to mess it up.  Thanks! 
 
I did get it second hand, but as far as I know it's all stock.  They're black Benedetti pickups, and look just like other pictures on google of the series 3 basses, so I'm pretty sure they're stock.  Perhaps someone rewired them? 
 
https://drive.google.com/file/d/0B-XiGXBjcItda09PbzVsYVE2SHc/view?usp=docslist_api

I tested the pickups as you asked, and when I shunted the wires the hum got slightly quieter but was still loud, for both pickups. 
My tech told me he did the same thing, that's why he thought it was a component of the pre-amp.