It's the Fishman causing you problems.
I have no idea how costly it is to replace, but I have yet to hear a manufacterer installed Fishman that was worth a crap.
You've already admitted your ignorance about Fishman's recent technology having never heard it.
The Matrix Infinity Pickup & Preamp System costs $160
The VTB Active Volume & Tone Controls is $110
If you are serious about good ABG tone, get the newer technology. I've had this for more than a year and it sounds great. In a totally different class than the old technology.
(Another reason to ignore advice on the internet from people who've never used what they're talking about.)