Remove #4 main board screws (both boards). Remove rx screws, gently remove rx's from under main boards , must pull antennas through leg holes. Switch rx's out. Reinstall antennas and screws. Fire up fc40 and see if you have control, if not , you may have to rebind remote controller to rx.
When turning on the receiver, the red light flashes, I press it into the butcher color flashing. Turn on the transmitter, the green light does not stop flashing When turning off the transmitter and turning it off again, the red light flashes. The NASA box works normally. When re-checking The receiver is a P้hanTom 2. Therefore changed to a new device The result is the same. now i have 3 remote it can " blind