No If you replaced "all" the motors on the gimbal it will be limp. Motors are matched to boards. The drum from the motor has a field which is read from hall sensors next to coil and tells board what to do. If you replaced motors without changing to original drum the original board does not know which way to point the stepper motor.So,,,,, if it would happen to be one of the control boards would the that last motor from the drone like the pitch motor cause none of the motors to work?
or would it be like the first in line causing the rest not to work?