The pic that Msinger shows are not the gimbal black and grey connection points. Those wires are for the controller transmitter and receiver antennas. In which you should not have to replace unless the landing gear were damaged as well. As for trying to repair the existing broken gimbal transmitter and receiver cables, nothing is impossible. However, the connection points are so small and difficult to re solder.
If you can find the connectors, why not? Give it a try. I simply know that it is easier to just replace the antennas complete and have the guarantee that you will not have any issues with transmission to the camera and gimbal. Simply removing the screws from the main controller board and slightly moving it to the side will make replacing the antennas a bit easier and less time then it would to repair the connections. I hope this helps. Good luck,, BB..