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My 2012 13” MacBook Pro’s display doesn’t show an image and the backlight doesn’t light either. Connecting system remotely via TeamViewer app (screen share app) from another computer shows the display is detected within the system.
The system has no water damage and history of the device is unknown.
pictures of logic board screen connecter
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Using a flashlight shining in through the Apple logo in the lid are you able to see the image of your desktop and its icons? If you can then the issue is strictly within the backlight logic. If not you may have some liquid damage on the logic board where the display cable is connected. Let us know if you see the desktop & icons.
In either case follow this IFIXIT guide: MacBook Pro（13英寸，带有Retina显示屏，2013年末）显示屏组件更换 Do the first six steps, then jump down to Step 11. After you’ve disconnected the cable take some pictures of both ends of the cable as well as the logic board connector and paste them here for us to see 在已经存在的问题里加入图片
指南
难度：
非常容易
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2 - 5 minutes
指南
难度：
中等
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30 minutes - 1 hour
这个答案有帮助吗？
nope nothing on the display that i can see, and there is no water damage to the device
OK, then you'll need to connect an external display directly to your system to see if the GPU its self is bad.
External Monitor Works Through Mini Displayport
Then we need to focus on the logic board connection. As that is the most suspect. Please take some good detailed pictures of the connector and cable ends.
OK will do, see above.
After putting the system back together the backlight now works and the display is solid white. Still no picture
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