iPhone x screen is black or frozen repair

Machine model: iPhone X
Customer description:Rear Camera opens screen is black or frozen in front of mobile phone
Test results: all functions of the mobile phone are normal, and the front Rear Camera turns on screen is black or frozen.
Fault analysis: Grasp the key point.screen is black or frozen appears in the former Rear Camera, so it must be caused by the fault of the same component connected to the former Rear Camera.

iPhone x screen is black or frozen repair Figure 1.

First, exclude Accessories and remove Accessories related to Camera respectively. After removing Rear Camera, the fault remains. Install Rear Camera, or replace Rear Camera to continue the test. If the fault remains, remove the front Camera and replace the front Camera, and the fault remains. After removing Camera Camera, the test fault can be repaired, and only Camera Camera can be replaced.