Originally Posted by computerbreak
No, if I take the arm off, and initiate the heli, the servo is still not controllable...has the whine until I turn off tx. Even when I gently turn servo, same result. This is driving me nuts...do you guys think it's the servo or the transmitter? The servo does turn about 1/4 of the way when initiating the heli...then whines like crazy like in the recording I made.
Sounds like a TX problem as others have said. I'd suggest opening up the TX and looking for any short circuits in the wires and circuit board traces (ie, excess sloppy soldering globs).
If you can't find anything obvious like that, is there any way to swap the control wires inside the TX for the LH and RH servos to see if the probem goes over to the other servo that works correctly?