MacBook Pro 15" A1990 No Webcam on LCD

[Stephen]

Multiple LCD's have been swapped and all of them have no Webcam. Took off a known working LCD on another 2018 and the LCD webcam doesn't work on this logic board still. Thoughts? We are assuming logic board issue or maybe something outside the norm?

[piernov]

Re: MacBook Pro 15" A1990 No Webcam on LCD

Make sure camera isn't disabled.
If you are 100% sure it's an LCD of the correct year with working webcam, try T2 DFU recovery, check camera inductors, camera power rail and camera disable signal.

[Stephen]

Re: MacBook Pro 15" A1990 No Webcam on LCD

Oh yeah T2 Recovery forgot to do that .

[Stephen]

Re: MacBook Pro 15" A1990 No Webcam on LCD

Going deeper. Going to have to dive into the logic board lol

[Stephen]

Re: MacBook Pro 15" A1990 No Webcam on LCD

Make sure camera isn't disabled.
If you are 100% sure it's an LCD of the correct year with working webcam, try T2 DFU recovery, check camera inductors, camera power rail and camera disable signal.

Mind me asking, Camera in system information does not show up at all whatsoever. We are going to swap one more LCD and keep you posted. Also Camera disable signal? can you explain further on that?

[piernov]

Re: MacBook Pro 15" A1990 No Webcam on LCD

.

[Stephen]

Re: MacBook Pro 15" A1990 No Webcam on LCD

Awe that makes sense! I will take a look at that.

[Stephen]

Re: MacBook Pro 15" A1990 No Webcam on LCD

Hey Piernov, if the LCD does not have True Tone and no webcam...would this be considered a NON-OEM LCD?

[Stephen]

Re: MacBook Pro 15" A1990 No Webcam on LCD

And also if the webcam is disabled would that make True Tone disabled because the webcam is next to the ambient light sensor (which gets power on the same connection)?

[Stephen]

Re: MacBook Pro 15" A1990 No Webcam on LCD

OK Update on the update....we took a working 2018 LCD with True Tone and Camera working, took the LCD off and put it (the suspected LCD that we thought was not OEM) on and it disabled the webcam. We put the original LCD back on the computer it was originally on and now it has disabled the webcam and true tone on the model we pulled the LCD off! So now we know for sure the original LCD that had a disabled webcam actually works. So what gives? What could be the cause of this?