So when I plug the Sony a7r for up to the small HD monitor it works fine. But when I plug the Ronin rsc2 into the Sony a7r4 and try to hit record from the gimbal my screen just goes black. I have searched the internet high and low and cannot find a solution for this. I've tried turning off PC mode and every other thing there is to turn on and off. This is so frustrating because this is the third gimbal I've had this issue with

So when I plug the Sony a7r for up to the small HD monitor it works fine. But when I plug the Ronin rsc2 into the Sony a7r4 and try to hit record from the gimbal my screen just goes black. I have searched the internet high and low and cannot find a solution for this. I've tried turning off PC mode and every other thing there is to turn on and off. This is so frustrating because this is the third gimbal I've had this issue with