Hey all, I purchased a Fernandes FAB-170 recently and I've had in 2 different shops near me (respected luthiers and repair). The first said he absolutely didn't want to tackle the job and the second has had it for 8 weeks now. Hoping to find anyone with knowledge or schematics or magic smoke to bring this puppy back to life would be greatly appreciated. I emailed Fernandes and as you can expect I got nothing. Problem: both pickups work beautifully in passive mode. Neither switch in either filter position makes no sound. In lieu of fixing it, what would be some recommended electronics to get this bass sounding as close to the Alembic sound as it looks and plays. Pickups and preamp.