I bought a Mavic Pro off eBay that said the gimbal overload error was the issue, assuming I could repair it. Received it, fired it up and the gimbal does nothing on startup & the display from the camera is black. There is NO indication in the app that the gimbal/camera even exists and no related errors either. Even the gimbal icon in the main page is gone! I removed the gimbal from the drone for inspection. I completely tore down the gimbal and removed the cable covers to inspect the cables, they all look good, no breaks in the camera cable & no visible tears in the flat gimbal cable and all gimbal & camera connectors are properly seated (they look factory, black glue & all). The gimbal moves freely in all directions. The circuit board power connector (white wire) appears to have been re-soldered and covered with something, not silicone. The repair looks good. I tested the plug end with a meter and got .014vdc. Not sure what it's supposed to be reading there. The front sensors calibrated via Assistant 2, so I assume the circuit board is ok or they wouldn't work? So, this one has me stumped, any help or guidance would be appreciated.