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Mid 2012 model, A1278 / 2.5 GHz i5 or 2.9 GHz i7 processor.

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My MacBook's Screen Not Working

Hi,

I tear down the MacBook to replace the thermal paste. I took a look at the iFixit Logic Board Replacement guide while doing this and I paid particular attention to the display socket but when I finished the process and turned on the computer, the screen did not work.

I can get an displaying with an external monitor, but the internal display is not working.

Why is this problem causing it? I suspect it's from the display socket, but I was careful this socket while I tear down this.

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I doubt you broke it, they are fragile, but not that fragile. Try to open it up again and reseat the connector in its socket. Make sure all of its connections are secure and clamped on. Good luck!

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Ty for the answer. I tried a few times and still not working. I guess I have to get help from Apple Service.

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Mehmet Aydın will be eternally grateful.
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