Persistent horizontal lines appear on iMac screen

I am reaching out to share an ongoing issue I, along with several other users, have been experiencing with our iMac 24-inch models, and to seek a collective resolution.


Problem Description:

  • Persistent horizontal lines appear on the screen, which significantly hampers the usability and visual appeal of the device.
  • This problem arises without any physical damage, and despite the stationary nature of the device.


Steps Taken:

  • Connected to an external display: The external display works fine, indicating the issue is with the iMac's internal display.
  • Reinstalled the OS: The problem persisted post reinstallation.
  • Avoided operating the iMac for a week: No change in the situation.


Concerns:

  • The cost of screen replacement is high, and there's no assurance that it will resolve the issue permanently.
  • The quality concern is alarming especially for a brand that positions itself as a premium segment player.
  • The support received thus far has been unsatisfactory, with no definitive solutions provided apart from a costly screen replacement suggestion.





Please do not ask us to visit to service center and replace the screen for 650USD + , problem happens mostly after warranty.


[Edited by Moderator]

iMac (M1, 2021)

Posted on Oct 21, 2023 10:40 AM

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Question marked as Top-ranking reply

Posted on Feb 7, 2024 9:45 AM

To make the best of a bad situation you could always use a separate monitor with the iMac. It's an annoyance given that there's already a display taking up desk space but at least you wouldn't have to get another computer. I kept several older iMacs going that way. Just make sure that if the display is really starting to go that you set this up before it is fully gone. You set up the second display as mirroring the first one and with iMacs this has to be done while you can still navigate the main display.

Similar questions

512 replies

May 20, 2024 2:29 PM in response to latVm

I have the same problem after 3 years of use. My iMac has been used carefully and everything works normally except for those black horizontal lines at the bottom. Apple, please!!!, help with this. We have relied on the quality of your electronic products when making these costly investments and I understand that it is not fair that you leave us stranded in this way.

May 21, 2024 6:01 AM in response to latVm

Hello everyone,

I'm experiencing the same issue. After turning off my Mac one day and powering it back on the next, multiple lines suddenly appeared on the display. My iMac has always been up to date, and even after reinstalling macOS, the problem persists. I hope Apple issues a recall, as my computer is just out of warranty. This shouldn't happen to a €1700 computer that's only three years old.

Jun 10, 2024 4:51 PM in response to latVm

I have same problem. 2021 24 inch M1 Desktop Mac. Bought Dec 2021, lines turn up May 24. A little bit more than 2 years. Emailed Tim, hasn't gotten a reply yet.


I find recent apple products' built quality gotten worst. As example the Macbook light i bought 10 years ago last till today. The subsequent 2 macbook i bought, 1 died after a reasonable few years. And 2nd one the screen turned flakey but apple change the screen free for me credit to them.


But it's a worrying trend. If this persist.. i think i'll just stick to iphones going forward.

Jun 11, 2024 1:42 AM in response to latVm

I'm having the same problem. I called apple service in South Korea 3 times and went to apple genius bar, but they couldn't solve it and only recommended paid repair. They asked for 850,000 won, which is the same price as a used M1 iMac. I used the iMac in a fixed position and didn't do anything to cause it to break down, it's so unfair. I don't know if I'll be able to buy a Mac in the future.

Jun 20, 2024 3:25 PM in response to Jotap62

Dear Jotap62,


"The (very expensive) out-of-warranty repair has always been paid for by users (those who choose to fix it)."


Agree! We will want to fix the problem. Since most devices are out of warranty, one must pay for the repair or replacement. That's a valid point!

However, buyers who have paid for their devices need some response from Apple. I am sure no apology, acceptance or roll-back may come from their side! Nevertheless, a simple reaction like 'we made a mistake' will do. This or that way, every buyer wants to move on rather than staring at the faulty screen dancing and flaunting the 'careless' moves of Apple, the company that somehow manages to have many screens worldwide failing to the same issue! That is why this visible anger is appearing here.


Jun 20, 2024 3:35 PM in response to latVm

An update:


From what I can observe, the lines do not only flicker. Right at the top, where the lines begin, there are reflections of what's on the display below. I am attaching a few screenshots that experts can observe. Also, if hardware experts are monitoring this discussion, do hardware problems look like these? Something on your screen finding reflection on a different part of it?







Jun 24, 2024 4:27 AM in response to latVm

hello!

i have exactly the same issue since yesterday, I bought my imac (24 inch, M1, 2021) on 5March 2022 and yesterday I experienced these color lines while I left my computer on for awhile… I just bought it for less than 3 years??? and I am still covered under warranty, I am afraid that after repair the same issue is going to come back up again….

Persistent horizontal lines appear on iMac screen

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