Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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Battery will not charge and MacBook will not run when plugged in

I had a major liquid incident on my late 2012 Unibody MacBook Pro. The good news is I replaced the logic board and the battery and everything was working well. That was until I realized the battery was not charging. When I select the indicator light on the side of the battery is flashes green rapidly. When the power cord is plugged into the MAC its stays a constant green and the MAC will not power on. Now that the battery is dead, the MAC will not power on at all.

I have checked all connectors and still no luck.

Anyone have any ideas?



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One other note, I have tried an SMC reset with no luck at this point. The light on the MagSafe adapter does not change. The green light on the MagSafe adapater is also dim.


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1 Answer

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Since you've already replaced the logic board, I'd replace the DC-In Board next:

MacBook Pro 13" Unibody Mid 2012 MagSafe DC-In Board Replacement

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I finally got to chance to install this and it worked. The only thing not working after all of these replacements is now the keyboard. Bummer!


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Megan Heinz will be eternally grateful.
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