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Released October 24, 2011 / 2.2, 2.4, or 2.5 GHz Quad-core Intel Core i7 Processor

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What is wrong with my MacBook Pro?

I've recently acquired a late 2011 Macbook Pro from a friend who stated it was broken originally due to the track pad going out. He attempted to fix it on his own, but made a mistake. (Severed the track pad ribbon cable, oops!) and since apple wanted to charge him over $1k to fix it because they stated they found signs of liquid in the case, he just bought a new one instead. With that said, I charged it up when I first got it, and turned it on, yet all that happened was the sleep light blinked in a succession of 3's, matched with 3 beeps, as well as the back of the computer in between the hinges became quite hot. Screen didn't come on, keyboard didn't light up, apple logo didn't light up. Now, I've opened it up and checked it out, and from what I can see, yes, the track pad ribbon cable was cut. I've bought a whole replacement track pad, and now looking at the logic board, it appears he somehow broke off the ZIF socket entirely, however the keyboard ribbon cable appears undamaged. From what I know, this will require me to replace the logic board as well. I am new to Macbook's, and I'm just wondering if there's any other possible issue I might need to look out for? I'm ordering the logic board Friday, so I want to make sure I'm going in the right direction of repairing this wonderful machine.

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Once you've ordering new logic board and you've got complete trackpad assembly already, that should sort everything but if there was liquid spilled over it, there is possibility that keyboard got damaged as well so once you'll take the MacBook apart, carefully check for any liquid marks everywhere - superdrive, keyboard etc. . Also, check all ribbons and cables just in case with special attention paid to LVD (screen connector cable).

The complete collection of guides for yours MacBook you can find here:

MacBook Pro 15" Unibody Late 2011



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The three beeps are a RAM issue. Reseat the RAM. Next use just one stick at a time and test both the stick and the slot. Be aware that this model had a class action action law suit on the logic board and a subsequent recall so you may have those issues too. Be very careful you do not buy one of the faulty boards:

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Update: I've reseated the RAM, plugged the computer back in (I drained the battery) and it worked! Screen popped on, as well as the apple logo lit up. The logic board I am replacing it with has been refurbished and tested so I am confident it's not defective, however there is always the warranty just in case lol Thank you!


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