defo wont be pwm if receiver is FS-A8S its either ppm or sbus, but you then say that throttle is less than 1000 and arm switch is ok. so if receiver ok it should fly, you appear to have receiver input.
defo wont be pwm if receiver is FS-A8S its either ppm or sbus, but you then say that throttle is less than 1000 and arm switch is ok. so if receiver ok it should fly, you appear to have receiver input.