Hello all. I was given a Syma X8 which wouldn’t fly. I tried to fly it without success. It appeared that one of the props was not revolving.
I had assumed that one of the motors had failed. I used the mm to test continuity and all wiring seemed OK. I then tested the suspect motor in another motor connector. It was fine. Using the transmitter (obviously) I tested all four motors in all 4 different motor connectors, but one at a time, individually. They all worked fine in response to the transmitter. I then connected all four motors to their prop connectors (being very careful to make sure that A’s and B’s were in the right place), but leaving the quad top off so I could observe the shafts.
Turned on the transmitter, then the quad. On this quad you arm the motors by turning the left stick to the bottom position, then the top, then bottom again, and then going upwards again, the motors arm. And so they did. All but one. I moved the stick very slightly upwards more. The still motor started. Moved the stick to centre. All 4 motors going. Moved the sick north more, motors accelerated and then two of them stopped.
I repeated this 10 times with the same result.
I am assuming this is a transmitter fault. What do you think? Some photos attached.