1 of 1 people found this helpful
First of all, thanks a lot for choosing our products.
Regarding the issue you are having, would you please send me a picture of your NUC. I was able to put completely apart a NUC in order to remove the board from the chassis.
I didn't have to remove the aluminum collar you mentioned.
Please check the pictures I took from the NUC.
I tried to find a video in order to show you how to build a NUC, but I couldn't find one. Sorry.
I recommend you to wait if another user was able to do it. But please send me pictures I may be able to guide you.
It turns out the secret is to unclip the window at the front of the enclosure covering the headphone and IR sensor. Once I did that the collar fitted over OK and then the window can be clipped easilly into place, so I'm happy again! Thanks for taking the time to respond and help with this.