Hello the same problem half fixed. my drone DJI Phantom 3 Advanced... My problem:, No video signal, Gimbal wabeling, imposible to update the drone, when iserting the usb cable in to the drone the SD card apears and desepears after 5 seconds, I had no image, gimbal only working when i start the drone, after i set the litle pin inside the gimbal from a youtube turorial the camera was stable but no video signal.
After trying to reconent gimbal connection whith no change, i put on the card version 1.1.8, i put it in the gimbal...no doungrade, i push the rc button in back of the drone and after i restart the drone i had video and ghimbal working, but is imposible to record video or take picture, is imposible to format the sd card from remote. Until this half fix my drone apearead on dji go as DJI Phantom 3 Profesional...but i have Advanced. i do not realy know what i realy did but i have hope that this problem is only software. If there is a way to update frimware through the usb connection on the drone i think all this problems will be more easy to fix...now i get camera error 1, please contact DJI, i have image but imposible to record. Before this fix i had no info in battery section, now is ok
Gimbal fix
After alignment you need to put some super glue, because this is a construction problem, and if you do non glue this litle shaft the problem will come back