Dust in the display, what causes it, how to prevent it
I just sold my “old” iMac 5k 2017 because it was out of warranty so Apple asked 650 Euro to replace the display because dust started accumulating in the corners.
For the same amount of money I replaced it with the “new” iMac 5K 2019 and now I have Apple care so I have peace of mind for 3 years.
As this is not a final nor elegant solution I would like to understand what causes this problem to some people over and over even with 2 or 3 replaced displays, but not for others.
I also made some primitive dust filter out of blocks of open cell foam I placed between my desk and iMac so I would like to know what you think whether this is going to help with dust accumulating in the corners again.
Here is how it looks: