screen failure on 24-inch-iMac, M1, 2021

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Level 1

30 points

screen failure on 24-inch-iMac, M1, 2021

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.

iMac 24″, macOS 14.4

Posted on Apr 27, 2024 7:44 PM

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Answer 1

rkaufmann87

Level 10

140,808 points

Apr 28, 2024 8:57 PM in response to LuciferYY

Well I understand and I have seen about 200 posts on these forums about it, I have no idea how many machines that represents however even if it's about 500-1000 machines that is a relatively small number in the grand scheme of things. It's definitely no fun when it's your machine and you don't have AppleCare though.

I suspect you represent a very small minority in that you only own your devices about 2-3 years, my current machine is 4+ years old (2020 27" iMac) and I plan on keeping it until as long as it can run current versions of Mac OS. That being said, your machine needs may be significantly more demanding than most so buying the latest and greatest may make a lot of sense. Even if you only own 2-3 years AppleCare may make sense for years 2 & 3, that being said obviously it's your decision and as I mentioned already this time your number just came up!

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Answer 2

LuciferYY Author

Level 1

30 points

Apr 28, 2024 5:44 PM in response to LuciferYY

Horizontal grey bar on my M1 iMac screen - Apple Community

Similar issues have also been reported here. Apple should pay attention. It is very unusual that display fails in less than 3 years.

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Answer 3

BDAqua

Level 10

239,447 points

Apr 29, 2024 4:56 AM in response to LuciferYY

Also...

Persistent horizontal lines appear on iMa… - Apple Community

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Answer 4

dialabrain

Level 10

122,627 points

Apr 27, 2024 8:24 PM in response to LuciferYY

FWIW, it's a hardware problem and needs looked at by Apple.

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Answer 5

LuciferYY Author

Level 1

30 points

Apr 28, 2024 5:40 PM in response to rkaufmann87

I don't buy Apple Care as I usually buy new devices after 2-3 years. It's a common problem so Apple should look into this and should have a service plan for it.

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Answer 6

LuciferYY Author

Level 1

30 points

Apr 27, 2024 8:07 PM in response to LuciferYY

Answers that suggest rest SMC or NVRAM, please notice that Macs with Apple silicon no longer have these features.

Also have run Apple Diagnostics, by holding power button till Options screen shows up and then press Cmd+D till it goes into diagnostics. There it says no hardware issues being found.

Running sonoma 14.4.1 on this iMac and restarted several times, and the problem still exists. Also tried unplug all connected external devices except keyboard and mouse, still did not work.

Did not move this monitor for >1 year and also no other damage to this mac.

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Answer 7

rkaufmann87

Level 10

140,808 points

Apr 27, 2024 10:26 PM in response to LuciferYY

Assuming your purchased AppleCare (always a wise move) then it will be covered. I have been a long time Mac owner and have owned many of them, when I invest that much money in a computer I want the peace of mind that AppleCare offers. If you passed that up and it is a hardware issue then please consider this instance a lesson learned about self insuring. Most of the time it doesn't pay off, until that time you need it.

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Answer 8

Apr 29, 2024 12:48 PM in response to LuciferYY

Just for the record, we are just users, and other than offering some hail mary advice can only commiserate with you. If you want Apple to see this send feedback:

Product Feedback - Apple

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Answer 9

Apr 27, 2024 8:22 PM in response to LuciferYY

Try safe booting the Mac and see if still occurs

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Answer 10

LuciferYY Author

Level 1

30 points

Apr 28, 2024 5:41 PM in response to supercondr

Of course that's had been tried. Doesn't work. It's a hardware issue.

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