I'm not sure how to tell which board is in it. This is actually that red one I just got from you pynis, lol. (don't worry, I'm happy with it and I'm sure there's something simple going on here)
This is the manual I was looking at:
I'll try new batteries tomorrow, I just put new batteries in it, but I have been messing with it a bit since then. I took it apart, all the wires look ok. I'll replace the batteries, if that doesn't work I might try replacing the motor.