I have a 2011 MacBook air whose built in FaceTime camera doesn't work and is not recognized by any app or the system profiler. I have attempted the following to resolve the issue however I have no success.

1. SMC & PRAM resets

2. Disk utility - repair disk and repair permissions

3. OS X reinstall - erased and reformatted and reinstalled.

4. Apple Hardware diagnostics test

5. Use of new profile.

I am thinking this is a hardware issue however I don't recall anything going wrong with the machine. Everything else works fine and the camera worked well previously too. Note: the ambient light sensor that's next to the camera doesn't function either.

Any one have any ideas? I have never taken the laptop apart but I don't mind doing it if I have to. Can the camera/light sensor be replaced or does the whole screen assembly have to be replaced?

Any advice/tips are appreciated.