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I have replaced the display cable I received from Ifixit, and after restart the screen is completely black. The computer tone is heard upon start up, but nothing shown on the screen.
I performed a P RAM on restart to see if that would do anything, but alas nothing.
Any suggestions?
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Hook up an external monitor to help you diagnose the issue.
这个答案有帮助吗？
Once hooked up, how would I begin to diagnose it? Standard utility tools, or some other software?
If it works, that verifies that everything up to and including the GPU are good. Now you are just looking at the video cables, connectors or the LED driver board.
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