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모델명 A1707. 2017년 6월 출시, 이 MacBook Pro는 Kaby Lake 프로세서 최대 2.8 GHz 쿼드코어 Intel Core i7 프로세서와 Turbo Boost 최대 3.8 GHz를 사용합니다.

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Blank screen before OS and no camera.

I replaced my screen with something I found on Ebay because my original had a crack in it and likely the flexgate problem as I have to change the angle to get rid of lines sometimes.

The new screen doesn’t work properly.

At first the screen is blank whenever in any of the firmware menus such as the alt key boot menu. Once its booting up with the Apple logo the display is fine but the webcam doesnt work at any stage.

I thought it was a bad screen but I got another from a different supplier and still the same. I even tried that on another mac and it works with that.

I’ve inspected the board and flex cables closely and there are no visible burns or liquid damage. I even swapped the flex cable for the display without any improvement.

I’ve tried updating the firmware on the computer by upgrading to Montery. Fully wiped the drive and reinstalled. I’ve also done all the basic PRAM and SMC resets.

I’m sure the screens I’m getting arent 100% official but they work on another macbook fine and my one works fine with any official screens.

I’ve read that flexgate can cause a short to the CPU on the 13” models but on the 15” (mine) this can damage a mux chip which is reponsible for swapping between intergrated and dedicated graphics. Does this sound related?

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The displays you are getting are not calibrated! Which is why the camera is not working.

This is a problem Apple has created as you can’t get the needed tools to calibrate the display. The best you can do is find someone with access to the tool to do it for you. One trick I’ve heard works is going to an Apple Store stating you just bought the system and the camera isn’t working, don’t tell them you had the display replaced. let them check things they may just calibrate it for you without a fuss.

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Thanks for your input.

I have spoken to the supplier and they are adamant that it doesn't need this calibration and they said it was all tested and working. Is there any other reason this could happen or should I push them to fix this problem?

I'd appreciate it if you have any links or keyword search times regarding the calibration requirements. I'd like to read more into this. Just searching for calibration brings up color calibration info which I dont think is related.

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