Chosen Solution

Dear iFixit community, I was in the process of upgrading my (iMac 21.5" 4k) and whilst I was removing the speaker (for easier access to SATA cable) the cord joining from the power button to the logic board (which travels along the left speaker) cuted. I was not applying much force and am very surprised that it broke. This means I am now unable to power up my iMac. Is there anything I can do to replace this part or somehow rejoin the wire? Any information would be GREATLY APPRECIATED!! (Even if it is “there is nothing you can do”) Thanks very much!

If only a 2 wire cable was cut you can repair this the old fashion way: strip the wire at the end an redo the connection, if its to short ad some wire and be sure to isolate every wire at the joints. Something like

If you have a soldering iron just resolder the wires Something like this