I got a quick response from Dustin at Sandberg so I think for the sake of a few pounds I’ll order a new blend pot and swap it out anyway because I’m convinced that’s the problem. Thanks for your replies, I will update this when I get the pot.
If it helps anyone else out there here is his reply.
Hi Don,
I'm sorry you're having problems with our blend pot.
It is possible that the blend potentiometer is causing the problem if deposits there are causing a short circuit inside. It is best to remove them with compressed air. The Deoxit solution may worsen the effect.
To identify such an error, you should check whether there is a short circuit in the blance pot. You do that as follows:
try to disconnect the balance pot from ground by removing it from the control plate.
Don't let the pot cover touch anything and try the bass again.
When it's working, there is a ground short circuit inside the pot
if this method does not help, we will have to look for the error further. the jacksocket could also be causing a problem
then the pot should be replaced.
These are the article numbers
Art Nr: EL00043
Art Nr: EL00042
you can order the spare parts here:
Webshop (Germany/EU)
https://sandbergshop.gambiocloud.com/
Dealer
https://www.sandberg-guitars.de/dealer-germany/
https://www.sandberg-guitars.de/dealer-europe/
https://www.sandberg-guitars.de/dealer-america/
https://www.sandberg-guitars.de/dealer-asia-australia-africa/