Model A1312 / Mid 2011 / 2.7 & 3.1 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac12,2

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How hard is it to replace the logic board?

How hard is it to replace the logic board on a mid-2011 27" iMac? My local Apple Authorized Service location wants $1,700 to replace it! I think I can get the part from eBay for around $600, but it comes without the CPU. Is that hard to swap out?

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Why do you need to swap out the logic board?


Dan, The computer was freezing sporadically, and now it no longer boots at all. I took it to my local Apple Authorized Service location and they charged me $60 to tell me that it needs a new logic board.

I have swapped hard drives in my old MacBookPro, so I think I can tackle this if it's not much different. My real question concerns the CPU. I can buy a used logic board on eBay here,, but I need to know if swapping out the CPU is easy or hard. Does it sit in a socket? Or is it soldered to the logic board?


As to your problem of the system freezing up can you explain more fully what happens. You might have a problem that may not need a new logic board to fix.


I know this is outdated but there is a lot of misinformation regarding macs and the the ability to upgrade them. My Mid 2011 is running 32GB ram, an upgraded processor from 2.7Ghz i5 (i5-2500S) to 3.4Ghz i7 (i7-2600) at 38*C which was not soldered and a dual drive (hd/sdd) fusion drive setup with the optical drive still installed. The upgrades were fairly straight forward, it just takes a little bit of time and patience.

This video gets you most of the way there:


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1 Answer

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It is and Advanced DIY project - you basically have to completely dismantle and reassemble the entire machine.

There are about 29 steps (this guide is similar to what you have to do).

Be sure to purchase the recommended tools, every job goes easier when you use the correct tools.

If this Answer is helpful please remember to return and mark it Accepted.

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