I had my first jam, and full disasembly of the head for my Zim. Surprisingly a fairly straight forward process except for finding 2 of the bolts stripped. I realized after putting back the fan and warming up the extruders that the left fan wires were touching the hot end on the side, and melted the wires in a few spots. I pulled it off when it cooled, and it ran fine. I went through the PITA process of calibrating everything again and put on the head cover. Thats when the left fan stopped completely. I tested the left fan in the right fans port, and it works. I then tested the right Fan in the left port, and no-bueno.
I guessing I either shorted the board, or something else. Everything else seems to work. Any ideas?