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2012年半ばモデル、A1278/2.5 GHz i5または2.9 GHz i7プロセッサー。

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MacBook Pro Mid 2012 No Backlight

I have a Macbook Pro, serial ending in F5WV, that was purchased refurb from apple for a employee to use. It last about 6 months until it was brought back to me for having no display. I did some digging and I have come to the conclusion that the backlight is the issue.

-I can do the flashlight trick and see my apple logo and users etc.....

-I can hook it to an external monitor and have it work perfect.

-I get a tiny little flash every time i boot but other than that the screen shows no life unless the flashlight is held up behind it

I have located the fuse and the driver but when i go to check the fuse the board shorts and cuts off. Obviously i am not finding the correct ground.

Any help with this issue would be GREATLY appreciated!! Even if its just helping track it down to the fuse or the driver!

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@tylerh It should not short out or cut off when you check the fuse. Mark the fuse on one of your images. What 820-XXXX is your board? How did you check the fuse? Why do you have the computer on to check it?

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@tylerh any news on this? I have the exact same problem! I don't even know how to "check" the fuse or where is it... OldTurkey03 is helping me too hopefully. Thanx

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The computer should not even be on when you're checking the fuse; use a multimeter, set it to resistance mode, and put one probe on each side of the fuse to check it. There should be a ~0Ω short across the fuse.

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Have you tried a PRAM and SMC reset? You can find instructions on the Apple website. That fixed a computer for me before so it's worth a shot.

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Tyler さん、ありがとうございました！
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