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

May 14, 2024 07:08 PM in response to qwertyHell

Looks like 90 days to me...


6. Apple warrants for a period of ninety (90) days from the date of service (1) that service will be performed in a competent and workmanlike manner and (2) that all parts used to service your product will be free from defects in materials and workmanship, unless otherwise specified by Apple.


And possibly even get a used part!


5. Apple may use parts or products that are new or previously used Apple genuine parts that have been tested and passed Apple functional requirements


Legal - Repair Terms and Conditions - Apple


Nov 3, 2024 05:59 AM in response to latVm

Olá, pessoal! Infelizmente, também estou passando por esse problema das listras pretas na tela do iMac M1. Adquiri o meu em 2023, usado, e agora, após pouco mais de um ano de uso, as listras começaram a aparecer, dificultando a visualização e o uso do computador. Levei para diagnóstico em uma assistência autorizada, que atestou não haver sinais de mau uso ou avarias no equipamento. A fonte também está em perfeito estado, o que indica possíveis defeitos de fabricação. Compartilho aqui o link com o meu relato completo para que possamos trocar informações e, quem sabe, buscar uma solução juntos.


Linhas Horizontais na Tela do iMac M1 - Comunidade da Apple


Hi, everyone! Unfortunately, I’m also dealing with the issue of black lines on my iMac M1 screen. I bought mine used in 2023, and now, after just over a year of use, these lines have started appearing, making it difficult to see and use the computer. I took it to an authorized service center for diagnosis, where they confirmed there were no signs of misuse or damage to the equipment. The power supply is also in perfect condition, which points to possible manufacturing defects. Here’s the link to my full report (in Portuguese): Linhas Horizontais na Tela do iMac M1 - Comunidade da Apple. Let’s exchange information and hopefully find a solution together.


Nov 22, 2024 05:41 PM in response to cinderella_

The steps to contact Apple Customer Support are:


1- Go to Apple.com;

2- On the Menu, choose "Support" and click on "Mac";

3- On the "Mac Support" page, click on "iMac";

4- At the bottom of the page, under "Service and Repair", click on "Sign in to My Support" link;

5- On the "My Devices" page, choose the pertinent device (iMac in this case);

6- On the iMac page, under "Telephone Technical Support" click on "Contact Apple Support >";

7- On the "Get support" page of your iMac, click on the "(...) More" menu button;

8- Then click on the "🖥️ Display" button;

9- On the next page confirm if "More" and "Display" are the options you choose, and if so, click on "Continue" button;

10- On the next page, under "Contact", you'll see the "Chat" button. Click on it!


Good luck!


PS

Take into account what I've said here:

Jan 1, 2025 09:33 AM in response to mishtamesh90

This doesn't seem to be a widespread issue. At least in Apple Terms. Otherwise it would be in the Apple Service Program Page. "Apple Service Programs - Apple Support


I don't see it there. So if it's out of warranty and you don't have AppleCare you need to pay for the cost of the repair. I have checked a few times since this has started to pop up on Apple community forum. What I've seen in the past is that when Apple does include a defective item in the Service Program Page, you may be able to contact them and tell them you paid for a repair that has been recently announced by Apple.

Feb 14, 2024 07:02 AM in response to zardoz73

What region is your iMac Part number in? I suspect this is happening to iMacs in a particular region.


List of Model Number suffixes for different regions:

  • LL/A - the US and Canada
  • HN/A - Indian Subcontinent
  • E/A - Mexico
  • B/A - United Kingdom
  • D/A - Germany
  • F/A - France
  • J/A - Japan
  • CH - China
  • ZP/A - Southeast Asia
  • X/A - Australia and New Zealand.


Persistent horizontal lines appear on iMac screen

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