Integrated Camera disappears and appears randomly

The Integrated camera randomly disappears from Device Manager and randomly appears for a short time. It works when it appears, but it happens less and less. I tried different drivers and different OS, and tried switching the privacy shutter.

I took the laptop apart from the back to upgrade the SSD and clean the fans, but couldn't find the camera connector on the back of the motherboard.

It sounds like a connection problem to me (corrosion?). It happens often (several reports on Reddit with similar models) but no one seems to find a solution.

Can anyone help me find the connection port on the motherboard so I can check it? I suspect it is located somewhere under the keyboard and maybe just loose or damaged by moisture. If it is relatively easily accessible it could be easily fixed I guess. Or maybe it is located somewhere under the screen and requires screen replacement, then I won't mess with it.