Sorry. Had this post in the Bass/setup folder by mistake. Hello and thanks in advance for any help. Had my 2x12 2200 Pro die at the end of an outdoor gig this past Sunday. Cab is 300W @ 4ohms. I run a GK 800RB into it. When I removed the jack plate last night, there's a green circuit board attached to the jack plate housing the 1/4 input, Speakon input, and a tweeter toggle switch. The board has some 'transistors' on it and what looks like a small fuse or tube. The filament in this fuse appears to be separated. All the speaker wires are secure. Guessing that fuse break is preventing the cab from working. Dilemma is how do I replace that since all the wires, transistors, and this fuse are cemented in place with a heavy yellow wax like material, I am guessing to avoid separation from vibrations. Fuse appears to be soldered at each end to board. Cannot find schematics for this cabinet and there's nothing in the manual that came with it mentioning that fuse. Any idea what kind of fuse this is? Do you think I can replace it or will I need a new board? Thanks again.