Black screen and no gimble mobility

[StaySmooth]

I’ve replace the flex ribbon and forward vision sensors. When testing the aircraft I had a black screen, no gimble mobility, and vision sensor calibration error. I calibrated the sensors on my computer with dji assistant 2. Now I have no errors, system latest update, but still no image or gimble functions. I was told maybe replace the signal cable. I ordered the signal cable I’m just waiting for that to arrive. Any tips just in case that repair isn’t successful?