by RCModelReviews » Thu Jan 13, 2011 4:31 am
Could be either a faulty pot, faulty wiring to the pot or a faulty microcontroller.
Start by checking the wiring to that stick unit -- make sure the soldered joints look good and that the connector which is on the other end of those wires is firmly pressed into the circuit board.
RCModelReviews.com, just the facts.