Chosen Solution

I have a mid 2012 macbook pro 13" non-retina A1278. I purchased it with a broken isight cable and replaced it, now the camera light comes on, but it will not display images or take pictures at all. I have the same problem across all apps and user profiles. Things Ive tried: resetting SMC fresh install of OS X installed older version of OS X. Is my cable the issue or the camera itself? thanks

Sounds like the camera unit its self is damaged. Do you have access to a complete replacement display assembly? I would give that a try to isolate out things and maybe you’ll just replace the complete assembly here.