Horizontal Lines on Screen of iMac, 24", 2021

Identical problem here. 24" M1 iMac is 3 years & 2 months old (so, just outside warranty period).

Going to call Apple today.

The same thing happened with my iMac M1 today and also after the device ran out of warranty. The support specialist told me on phone, that i need to pay the repair. When i told him, that there are many other users who have the same problem, he said, this is the first time he's dealing with this issue.

What i've noticed is, that the upper right corner of the display gets incredibly hot. But then after manually cooling it down. The temperature is and stays "low". This is fishy for me.

If the iMac has a production bug which is revealing after some time, in my opinion Apple IS accountable for this bug, even if it appeared after the warranty ended, since how can a customer complain about a hidden bug during warranty when he doesn't even know that the bug exists.

I have an appointment at the genius bar and i hope Apple has the face to offer a fair solution !!!

Hi,

Same here, got mine in October 2021 and the problem started a few months ago.

It's very annoying and gives you seizures/headaches because of the "strobe"effect.

Tried everything (reinstalling macOS, updating, leaving of off for days) and nothing worked.

Hope Apple recognize the problem and extend to its repair program.

Just got the same issue today. The horizontal lines are flickering near the bottom of the screen. It is not much of a bother for now, but I'm worried that the issue will become worse soon.

I bought my iMac in 2022, thus the issue popped up after 3 years of frequent daily use. It is a bit longer than others. I'm not using Auto Brightness, and the Brightness level is relatively low all the time.

Just posted as we are on the same boat 🤞, and looking for a feasible solution from Apple.

MemerGamer wrote:

That’s planned obsolescence for you. My 2006 MacBook Pro (I know it’s not an iMac) works fine including the screen (I think it has a CCFL backlight) but this happens with about everything these days sadly. I’ve got a microwave that’s under a 1 year warranty that’s losing power and before that one we had a sharp microwave from the early 90s

It's not planned obsolescence. It's a manufacturing defect that only affect a small subset of M1 iMacs.

As for your microwave oven, maybe you're just like Joe Bfstplk, always under a cloud, bad luck just follows you. Get it fixed under warranty.

Remember what Forrest Gump says: "It happens".

I have this problem for a long time now.

the lines no appear and disappear every 1 second, and also moves higher in the screens.

support acknowledges the issue, and that it presents in many iMac, but the repair has to be paid entirely by me…

This has been reported for over 6 months in this thread alone. If Apple has not yet doing extra-warranty repairs, I doubt that they ever will.

Hi everyone,

I'm reaching out because I'm having the same frustrating issue with my iMac 24" M1 bought in October 2021. After just three years of careful use, the screen started displaying horizontal lines that flicker and make it difficult to use.

I'm really disappointed to see this happen to such a recent and expensive device. I've tried troubleshooting steps, but nothing seems to work.

Any updates on this issue? If so, how did you resolve it? Any advice or suggestions would be greatly appreciated.

Thanks in advance for your help!

...Ricardo

When I increase the brightness the lines become more persistent and ehn I reduce the brightness they disappear for a while. When I wake up the mac they start appearing again so I increase and decrease brightness to work on my projects. I don't understand how this issue has started as everything else seems fine with the imac other than the display issue.

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I am facing the same issue as everyone else here. The lines appeared on my device a few days ago. This is the first time an Apple device has failed me within three years of use. It’s too expensive to get it fixed.

Apple keeps removing my comments about my situation but here’s the bottom line:

They declined my claim for support and didn’t recognize the widespread problem and confirmed that they are right to charge for the screen replacement. Pretty sad since I’m having headaches and seizures from using the computer with this problem…

The reason your posts are removed is because you continually are violating the Terms of Use that you agreed to abide by! You can find them at the bottom of this web page by clicking the link, please read them and you will see what you can and cannot post on these forums.

If you are unhappy with your iMac, Apple or anything associated with Apple of course you can select other devices and manufacturers. But please do look over the Terms of Use so you have a good understanding of what we are and are not allowed to post on these forums.

You'll have to keep tabs on this Apple site, Apple Service Programs - Apple Support. to see if a when a recall service/repair program is announced by Apple.

In the meantime you might consider getting an inexpensive 3rd party monitor to use with your iMac.

Same issue here. iMac 24" M1 2021. Used for 2.5 years. The Apple Store staff suggested me to leave a message in Apple Feedback and let the people higher up look into the issue. The staff can't do anything if it is not in the Apple Service Program.