Chosen Solution
I followed the guide from ifixit to install a new rear camera after a minor fall crack the edge of the screen and the camera no longer functioned, but after a new camera and a new battery the problem persists! The front camera works fine. The rear camera is black. The flash does not function. There is a caution “overheating - wait for battery to cool” warning and the battery does overheat quite easily. I have checked all the connections which seem fine, and not sure how to diagnose. Help please!?
Try the soft reset or resetting the settings. It should work for you.
