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 May 26, 2024 06:08 PM

I just received my repaired Imac. every thing looks beautiful and it is just like new! It only took 3 days total to fix and I paid zero :)


I am very thankful.


Overal process:

1. Kept apple in good consciousness and practiced released judgment and frustration and remained in forgiveness and non-attached frequency. 2 Reached to chat support and requested senior advisor 3. Had a genuine conversion about my appreciation for apple and how there is a case of manufacturing that can be happy to any company and requested for them to investigate this thread - as it is well documented. (Thanks to all of you) 4. She forwarded it to engineers and requested the photos and files from me, and within a few days had been approved for repair.


I trust this can be done for all the other people with the same issue and hopefully in the future if it happened again they can upgrade us to a newer model. May be we can all get an M3 ? :P


Talk soon!

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401 replies

Jul 1, 2025 10:33 AM in response to latVm






It's unfortunate that this situation keeps happening. According to previous threads, this is a uniquely Apple issue across multiple products such as the laptops since 2001. It's honestly quite shocking that this issue still hasn't been fixed and honestly, I'm quite disappointed with the quality and lifespan of such a luxury product. Have been a loyal fan since I converted from Android devices, but cases like this makes me think twice.

Jan 15, 2024 02:15 AM in response to latVm

Have the same issue on my iMac 24" 2021. Started with lines at the bottom, shutdown and it was gone. After some time, it came again, shutdown then gone again. Then the 3rd time, it came again and never went away. Even I shutdown my iMac for a month, the lines are still there.

I went to Apple Service Center and they quote me S$900++, way very expensive. So just went back home and try to make use of the iMac even if the lines at the bottom are very disturbing.

This might be some issue on most if not all of the iMac M1?

How can we escalate this to Apple?

Persistent horizontal lines appear on iMac screen

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