I find quite a few discussion sessions on the Mavic Pro drone being the probable source of gimbal malfunctions, and I was wondering if there is any definitive way of finding out whether the drone or the controller is the source of the gimbal not working. I had been taking some vertical photos at a low height recently (about 3 metres) and stopped for a bit to have lunch. Starting up again I found that I had no gimbal control at all. The gimbal goes through its standard 3 axis rotation test and then the camera just droops down a bit and does not respond at all to the controller dial being turned. The 3 axis rotation test occurs even when the controller is turned off, so at some point the controller must 'take control' of the gimbal and camera movement. I have had the camera and gimbal unit apart and replaced the ribbon cable in case it was the problem, cleaned all the small connectors with isopropinol but to no avail. I keep on getting the same error message on my screen which says "gimbol gyroscope error". "Hardware malfunction. Contact DJI for repair". I cannot do a gimbal recalibration at all - I get an instant message that "gimbal calibration is complete Do not move the aircraft", and everything completely locks up. I need to resort to shutting down the drone, the controller and my smartphone before I can do anything at all. All the camera features work correctly (except of course not being able to move it) and I can fly the drone without any control problems. The camera is quite free to move around by hand but just does not respond to any controller commands. Can someone explain why the controller seems to have forgotten there is a gimbal waithign for instructions. There have been no software or firmware updates for a couple of years now, and certainly not for the half hour I stopped for lunch and tried to start up again.