Chosen Solution
I’m trying to diagnose a FaceTime HD camera that isn’t detected under OS X system profiler after a screen replacement. I’ve tried resetting NVRAM, SMC, and disk repair to no avail. However, the ambient light sensor works great, and it is my understanding that it’s located on the same PCB as the camera. Are the camera and ambient light sensor connected via the same cable? I’ve never really encountered a nonworking FaceTime camera especially on a brand new OEM display so I’m not sure if this is an obvious fix. Thank you.
If it was working before replacement, it will be the screen assembly. You can rarely get one with a non-working camera, especially if it is not an original Apple part (for example, bought off eBay) and they have used a non-original camera and flex. The first 2015 15" assembly I bought when they were available had this issue, so it is likely this. If it was not working before replacement, it will be an issue related to the logic board. Measure pins 2, 3, 4, 5, 6, 10, 11 and 12 of the front camera connector on the logic board (going from bottom to top) if it was not working before screen replacement, and let me know the values.
you might want to check the connections on the front panel assembly
