I have just bought a second hand 301F but effectively new as in box, not assembled. Have put it together and the transmitter binds to the plane OK, LED's come on main board and camera, camera works but none of the servos or motor work. Also cannot seem to get to the menu screen on tranny by pressing enter key for 1 second. I have tried adjusting the trim level on the throttle but no change. One concern is that plane arrived with battery connected in it. This had flattened the battery but I am wondering whether it could have caused some damage. The voltage on the transmitter also seems to drop very quickly despite new batteries. Any thoughts gratefully received.