Ok this is continued from over in the new camera thread. I couldn't agree more with the opinion that if you are renting the camera, don't open it, it's not your equipment to risk. I have bought a 2nd optical block from another user here who damaged his optical block by opening it up and removing a cable, BEWARE! it is easy to break things in these situations if you are not familiar opening up electronics.
Checking the optical block connections is fairly easy. The optical block being connected wrong was exactly the cause of why I had menus and a black screen. The F35 will run with lots of it's internal parts not connected. It seems there are 3 cables which go to the optical block which might be worth a check if your F35 isn't getting anything but a black image and you are sure all your lens settings and camera settings are correct.

To get to the optical block connections, remove the four screws on this plate.
Checking the optical block connections is fairly easy. The optical block being connected wrong was exactly the cause of why I had menus and a black screen. The F35 will run with lots of it's internal parts not connected. It seems there are 3 cables which go to the optical block which might be worth a check if your F35 isn't getting anything but a black image and you are sure all your lens settings and camera settings are correct.

To get to the optical block connections, remove the four screws on this plate.
