[Black screen after firmware update]

Same issue GFX 50r just randomly

[Fuji GFX 50R Black Screen when turned on]

Recently had a photoshoot and the camera turned off after 33 photos. 

When camera turned back on, screen asked for language and date settings.

Camera fires and shows exposure info, menu setting etc but will not show a live view not record images.

Could this just be a firmware failure of some sort or a deeper issue like a sensor failure?

Never has been dropped or anything of the sort.