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How to open a 27-inch iMac 5K

Replacing the Fusion Drive with both a SSD and an harddisk

July 30, 2020 -

This month I did an attempt to upgrade my 27-inch iMac 5K. I wanted to replace the fusion drive with a SSD and a large hardisk. In addition I decided this was a good time to upgrade the RAM memory as well, maxing it out at 64GB. I was on a mission to create the ultimate iMac, but things didn't go to plan!

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Removing the power supply board
Removing the power supply board
A (nearly) empty iMac enclosure
A (nearly) empty iMac enclosure
YES, it works! The new logic board accepted keyboard input and allowed me to proceed with macOS installation
YES, it works! The new logic board accepted keyboard input and allowed me to proceed with macOS installation
Work in progress: most parts removed, the logic board remaining
Work in progress: most parts removed, the logic board remaining
It contained a new logic board, but without a processor
It contained a new logic board, but without a processor
Removing the heatsink from the logic board
Removing the heatsink from the logic board

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