Ever since the last time I travelled with it in an airplane I've had problems with the camera feed and the sd card. I've been trying to fix it ever since but to no success. I've successfully taken it on an airplane in the past with no problems, but I wondered if there was any possiblity any of the scanners had messed with it. Also, I did disconnect the gimbal for transport so I wondered if cables had got damaged during that process.
There appear to be multiple problems. The main one is that I get a black feed on my screen and cannot record video or take photos. The second is that it can't see the micro sd card and so I can't update the software (it's a phantom 3 4k so I have to do it through the app, I can't load it up on my pc). This is less important a problem as far as I can tell but it's often suggested as a solution to the first problem. I've tried connecting multiple devices and reinstalling the app. The drone flies absolutely fine and mechanically the gimbal works fine as well. It does it's dance on startup and then stays level for a few seconds before then hanging limp. Most recently I've tried changing some of the cables connected to the gimbal, but it hasn't made a difference.
The android app says "image transmission weak" and the iOS app says "gimbal disconnected". I've tried using a Oneplus 2 and an iPad Mini, neither of which are officially supported but have both worked fine in the past.

Is this likely to be a software or a hardware problem? Is it worth replacing the ribbon cable? I'd really appreciate any thoughts any of you have on this!!

Sounds like you are on the right track with  flat ribbon cable replacement.   Look for nicks or bad connections.

ALABAMA Posted at 2018-7-11 07:28
Sounds like you are on the right track with  flat ribbon cable replacement.   Look for nicks or bad connections.

Yeah I've looked and can't spot anything, I'm not sure if that's the problem though given the sd card also can't be read, and I think that problem started at the same time.

hi, did you ever get this resolved?  Im having gimbal disconnected and at the same time my SD card says invalid.. but this seems to be happening when i get lift though the gimbal up and down motion works still but im unable to record, take pictures and the sd card goes to NA

Hello, good day I'm from Argentina and I have the same problem with my phantom 3 4k and until now I could not find a solution and I would like to know if someone from DJI could tell me why this is wrong and how it is solved or if someone from the forum he could solve already thank you very much.

They just want use to continue to upgrade so there will be no fix for this even though your full drone works you just can't see anything is bull ... this was meant to happen seeing how it's happening to so many of us.

I've stayed by you guys for years but now it's all about money with you no longer about the craft and the supposers 2ho stood behind you