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

Reply
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!

Similar questions

401 replies

Dec 14, 2023 07:23 PM in response to Akipotpot

Update: The horizontal black line disappeared, turned it off for a few days after but when I turned it on it was still there, a few hours after, I thought it disappeared by itself, but it just moved to the left part of my screen and became a vertical yellow line. Starting from where the horizontal line appeared the last time down to the bottom. Up to now, the vertical line is still there. It's unnoticeable, better than the irritating horizontal black line.

Mar 9, 2024 04:48 AM in response to latVm

It seems like more and more Mac users are experiencing this line problems with their computers. Apple should be able to address and find solutions for this issue, as even users with newly purchased units are facing the same problem. This is a product defect issue. They should make sure to test their product before releasing to public.






Apr 21, 2024 11:58 AM in response to latVm

One way you can prove or disprove that's its hardware or software is to erase the drive and install a new system. Do not migrate your user data to it for this test. If the problem appears then it's hardware and not 3rd party software issue.


If gone then it's software and you should manually restore the contents of your Music, Pictures, Documents and Desktop folders from your latest Time Machine backup to the new user account (which should be an admin account and can be your original user name and password.


Then you should reinstall all of your 3rd party software. NOTE: be sure to note all of the activation codes for those 3rd party apps that require them.


Also do not installed and run any "cleaning", "optimizing", "speed-up", anti-virus or VPN apps on your Mac on your new installation. A VPN is OK if it's required by your employer, bank or school.


If it's hardware related you'll have to make a decision as to how to address it. A possible alternative is to get an inexpensive 27 inch monitor and run it along with the damaged monitor and use it as your primary monitor.


Just some food for thought.


Addendum: all of this requires you to have a full and current backup of your boot drive with Time Machine or some other backup app.

Persistent horizontal lines appear on iMac screen

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