Hello,
I believe DJI intentionally engineered obsolescence. I have the same problem (I see just about everyone does). Had the Vision+ on the shelf for a bit while using other drones. Took it out today and got the black screen, all telemetry is perfect and the camera takes photos and video - just no live streaming. Jumped online. I've 'heard' that it's the ribbon and some shop in FL will install a 'grey one' to replace the black and that's the fix? Sounds ridicules to me. My drone is in perfect working order. This is a software issue and because DJI no longer supports this craft I think we're screwed. I get the exact same result on the paid app, Ken's Ultimate Flight. My bird is modded with FPVLR antenna and other extras as well. Plus the 20 batteries I have for this and the Vision. I'm taking a huge hit, $. If anyone has a sensible fix, aside from changing the color of the connection cables, please let me know. Otherwise I'm just putting all my Vision + and Vision stuff on eBay before it's totally worthless (if interested beside the V+ I have several Visions and parts to last a lifetime). I like the P3 and the P4 but don't want to be locked into Light Bridge. Great technology but way beyond my ability to tinker with. Thanks in advance for any suggestions.