crwdns2892124:0crwdnd2892124:0iMac Intel 21.5" Retina 4K Display (2017) RAM Replacementcrwdnd2892124:0crwdne2892124:0

crwdns2892146:0Sam Goldheartcrwdnd2892146:0crwdne2892146:0

crwdns2875918:0crwdne2875918:0 crwdns2892120:0crwdne2892120:0 Sam Goldheart

iMac Intel 21.5" Retina 4K Display (20152017)
This guide details removing the logic board in an iMac 4K in order to remove or replace the RAM. The guides were performed on a 2015 iMac 21.5 4K Retina Display but with minor adjustments can be used to work on a 2017 edition.
You will need to remove the logic board without removing the right speaker, and you will need to remove the microphone cable before removing the logic board screws.
Opening this device requires cutting through adhesive that will need to be [|new_window=true|reapplied] after you finish the repair. Be sure to test your new RAM before sealing the iMac with the adhesive strips.

This guide is marked "potentially dangerous" because it requires you to handle a power supply that contains large capacitors. Unplug the iMac and hold the power button down for at least 10 seconds to help discharge the capacitors. Handle the board by the edges and do not touch surface components.