4 cell problems

[LEM]

I attempted to upgrade my spec 2 to a 4 cell battery. I managed to get everything soldered and back where it belongs, and then tested it, only to find that the motor now is not working. The servo for the steering is working, but not the rear motor. Anyone have any ideas what could have happened?

[pmlabrier]

There are two wires that go from the pcb to the motor. Make sure they are securely soldered to the PCB. I had a similar problem and on mine, the brown wire was loose but did not look like it was.

Hope that helps,

Paul