Distorted borders iMac 27 2020

[speedynix]

A client is asking me if I could fix his iMac.
Specs:
Retina 5K, 27-inch, 2020
Processor 3,1 GHz 6-Core Intel Core i5
Videokaart AMD Radeon Pro 5300 4 GB
Memory 72 GB 2133 MHz

I only have this image, but I can ask for more. I never seen the borders like this. He says he saw it only after upgrading to Tahoe, but I wouldn't think it has anything to do with that..
Any ideas? Thanks

 

[zarmanto]

That's a hardware failure/burn-in issue that can crop up due to too many hours in operation. One of the old-as-dirt 4K HP monitors on my desk at work has the same malady, and it was in continuous operation for around six years before it even landed in my lap. I would speculate that your client never turns off his iMac nor sleeps the screen. He probably only noticed it after the software update, due to a change to the background image.

Pretty sure the only fix is a panel replacement.

 

[speedynix]

That's a hardware failure/burn-in issue that can crop up due to too many hours in operation. One of the old-as-dirt 4K HP monitors on my desk at work has the same malady, and it was in continuous operation for around six years before it even landed in my lap. I would speculate that your client never turns off his iMac nor sleeps the screen. He probably only noticed it after the software update, due to a change to the background image.

Pretty sure the only fix is a panel replacement.

Thanks, I was thinking the same thing about the wallpaper. I'll ask him.

 

[mreg376]

Yes, it's got to be burn-in. My 2017 27" has basically been on for 8 years but display is set to sleep after about 10 minutes, and I've had no issues.