Chosen Solution

Where can I find the replacement for this display? Can I use the 2015 5k displays?

Ouch! As you can see here the parts are different between the 2017 & 2015 models: 27” iMac Retina 5K LCD Panel 2017, Apple P/N 661-07323, Display ID LM270QQ1 (SD)(C1)27” iMac Retina 5K LCD Panel 2015, Apple P/N 661-03255, Display ID LM270QQ1 (SD)(B1) Apple uses a custom controller board (T-CON) which is different between these displays from what I’ve been told. The newer model also offers a brighter display.

Hello! Where can I buy a display for my 2017 iMac 27inch 5K? Part number: model 2017 - LM270QQ1 SD C1 CP47427017UH5L1AL