I have started looking at the Rambo Board. I've attached an image, my notes are in blue/cyan.
Basically, heating element zero in the upper left supplies no voltage. The little fuse in the lower right supplies now voltage, even though the resistance between the fuse is zero. When I try to power fans, or heat things, the bed heats, but the fan and heating element on zero doesn't work.
One of the fuses, a little white one, was burnt out, but i unfortunately don't know which one since i forgot to test it while in place.
My thought is I rewire the extruder and fan to the next heating block over, since I read that each area is independent. If I do this, do i need to go into the repetiere firmware and and tell it something special, or can i use slic3r to tell it to use extruder #2? My follow up is that i think I burnt it out using the Volcano hot end and some bad Pid. This is a first gen orion, so an older rambo I assume. Am I in danger of just burning it out agin, or are these kinds of things more happenstance situations?
Any other thoughts on what to do next are appreciated. Though I got the Orion to not have to deal with these kinds of things, I think this is a good learning experience, so I'm fine doing more tinkering and more reading if I get pointed in a good direction.