I went to turn on my AR8 Pro and the dial continued to turn in the on directions. I opened the machine and found that the entire on/off unit was spinning free, not just the dial. The spinning had caused the bottom three wires to break loose. I replaced the connectors that had broken off, but now I don't know which of the three wires goes to which connection. Does anybody know it there is a diagram or a video on replacing the power unit? Thank you.