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Late 2011 model, A1278 / 2.4 GHz i5 or 2.8 GHz i7 processor.

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Help :( I'd like to replace 820-2936-B with a 820-3115-B. Issues?

I'd like to add an 820-3115 board to a 820-2936 machine. My board wasn't recognizing the battery so I send to for repair. Now it is completely toasted by a “fixing” company and now it won't even turn on. Anyway, what problems will encounter to replace old 2936-b with new 820-3115? Please someone? I need to buy from eBay and I don't won't to waste my money for a board that won't work. Also I need my machine for university assigments and I'm delaying things too much. Please help! :(

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The LCD cable won't fit in the LCD connector on the 820-3115; they use a different silver connector, which is used in the later models. In theory you could replace the cable with a 2012 cable, but it would be a lot more hassle than buying a 2011 board

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Any other than that? Like proscessing power or similar stuff. I saw a guy trimming the edges.

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No, that is the main difference as far as I'm aware. Pretty sure you can force the cable into the connector, but it is definitely not recommended

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That is not correct. The 3115 is not a retina! It fits with your display. As my 3115chasis with a 2936 board.

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