Horizontal lines at the bottom of iMac(M1,2021) screen

Bought this device on Dec 2021, and today the screen shows many horizontal lines at the bottom of the screen and this is also a grey area showed up, which also blinks at a frequency ~2-5 seconds. This is very annoying and makes it unusable. Since I had many devices, e.g 2018 MacBook Pro 15, 2022 M2 MacBook Air, 2022 M2 Mac Mini, so did not use iMac like 7(days/week)*24(hours/day). There are many reports on this issues which can be found on iFixit and Youtube. I think it's a manufacturing or design issue, or just bad parts causing this problem. Had old iMac being used for >10 years and had no issues. Also other displays (Aoc, Dell, LG, Samsung) I have used (1-8 years) never had this kind of issues. Apple should investigate why this occurred and repair the faulty parts.



[Re-Titled by Moderator]

iMac 24″, macOS 14.4

Posted on Apr 27, 2024 7:44 PM

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Question marked as ⚠️ Top-ranking reply

Posted on Sep 10, 2024 8:34 AM

After reading all the threads related to this issue, I've contacted Apple chat support and tried to negotiate a free repair for this widespread issue.


Apple chat support said that they don't have the authority to do this and ask me to contact phone support. Phone support said the same thing and asked me to take the iMac and go to Apple store. And Apple Store support said they can't do anything unless the issue appears in this Apple Service Programs list, and he suggested me to leave a message in Apple Feedback.


Everyone, please leave a feedback to make Apple fix the issue.

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Oct 7, 2024 2:35 PM in response to RevDVale

I have an iMac M1 24 inches purchased in January 2022. For now everything is fine, but I'm afraid that I might have the same problem soon. I previously had a MacBook Air and the famous butterfly keyboard problem, which Apple replaced under its repair program.

I know there were lawsuits in the US against Apple to force them to fix this problem for free. I hope it will be the same with horizontal lines now.

If my iMac breaks down too and Apple doesn't fix it for free, I give You my word I will never buy anything from them again. Apple will cease to exist for me, I will go back to Windows.

Of course I will leave feedback and write what I think about them. Maybe if a few hundred thousand disappointed users do the same they will be scared.

So far, reading Your posts I am very disappointed.

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Horizontal lines at the bottom of iMac(M1,2021) screen

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