Close Up View of the 4K Image Sensor PCB. The Image Sensor has no part number that could be cross referenced. Leave a comment, if you know the part number of the Image Sensor.

Close Up View of the backside of the Image Sensor PCB

U4 Part Markings: PA81, TI 878, A5X3

Please leave a comment if you know the part number for U4

Close Up View of the Camera Lens