Persistent horizontal lines appear on iMac screen

Let us all report and complain this to Apple --> Feedback - iMac - Apple

Did you leave feedback on the Apple website about this? Link below:

Feedback - iMac - Apple

Hope with all the feedback they will start a repair program.

Got into a chat with Apple Customer Support. I guess it would help if all of us here will do a chat to Apple and provide this discussion link to them --> Persistent horizontal lines appear on iMa… - Apple Community

Letting Apple know will give traction on this issue. It is really absurd for Apple to charge us big amount of money to fix this hardware issue.

See the screenshot of my chat, and notice the horizontal lines below the screen.

Got into a chat with Apple Customer Support. I guess it would help if all of us here will do a chat to Apple and provide this discussion link to them --> Persistent horizontal lines appear on iMa… - Apple Community

Letting Apple know will give traction on this issue. It is really absurd for Apple to charge us big amount of money to fix this hardware issue.

See the picture of my display with the chat and notice the horizontal lines below the screen.

Hey everyone, when I got in touch with a senior advisor to escalate the case, they told me there was NO record of this being a widespread issue.

I asked if there’s a way for everyone experiencing this to report the problem directly, and the advisor pointed me to the Apple Feedback page. If you’re dealing with this too, I’d suggest submitting your feedback there. The more people report it, the better chance Apple might take notice and address it.

I have the same error. After 2 years the device broke. This is supposed to be sustainable quality, I mean something different by that. I live in Germany.

I am having the same issue as you all. I was using my iMac today and suddenly this grey bar has appeared on the bottom part of the display (see picture). I've tried restarting, updating but it's still there. When connected to an external display there is no grey bar on that.

I bought my iMac in August 2021 so just over 2 years. This cannot be a coincidence that this is happening to all our iMacs that are over 2 years. This is either caused by a recent software update or this is a hardware failure. Either way this is unacceptable for an Apple product. These iMacs should last a minimum of 5 years before any problems.

I am going to contact Apple support and see what they say. I refuse to replace the display for > £600 when this issue can return again.

It’s from the U.K. unfortunately I don’t have AppleCare. I would have never expected the hardware to fail after 2.5 years.

I am having this issue and I am in the US.

I have the same problem with my iMac. I just noticed that many people are experiencing the same. Hope Apple can pronounce about this issue and give all of us a reasonable solution. If anyone has any update, please let us know.

Thanks,

I'm a long time Mac user, specially for video editing apps and rendering. I loved the 24 inch iMac, my wife and I bought two. AND NOW THIS!! I had a 2011 27 Imac for long time, NO issues at all. What's this? Apple should do something about this!!

I got an iMac (24”, M1, 2021) in July 2021 when it first came out, almost 3 years ago. It has been in daily use since; however, last week flickering black horizontal lines suddenly started appearing in the bottom half of the screen.

Even after restarting and updating, the annoying lines keep appearing on the screen, making it unusable. Turned the iMac off for a few days, but the problem persists. Apart from the screen, everything else is working as it should.

It’s very frustrating to use the iMac with these unnoticeable, irritating horizontal lines on the screen. It's such a disappointment to see this issue; without a cause, within such short time.

Note that ping137 got a new machine because they took his old one in for evaluation and troubleshooting. There is no reason to believe that this is a change of policy for Apple on this issue.

Horizontal Line Issue Leads to Overheating and Display Damage in 2021 iMac M1 Chip - Seeking Resolution

I'm reaching out for advice and support regarding a serious issue with my 2021 iMac M1, which I believe is linked to a known manufacturing defect involving horizontal lines on the screen. Here's a detailed account of what's happened:

Timeline:

May 2024: I first encountered horizontal lines on my iMac's screen. I took it to an Apple Service Center in India for inspection. 

Service Details: 

Inspection Fee: I paid for the inspection Fee of 2500 INR, but the cost for a screen replacement was quoted at a price I couldn't afford.

Assurances: I was assured by both the service center manager and an Apple senior executive that these lines were not a cause for concern and would not lead to hardware failure. The service service center manager said I could continue using the iMac for years if the lines weren't disturbing my work.

January 15, 2025: The situation escalated dramatically:

Display Anomaly: Suddenly, the horizontal lines at the bottom half of the screen cleared and moved upwards, which was a new development.

Overheating: Heat started emanating from the top right corner of the iMac, to the extent that it felt like it was burning. 

Immediate Action: I turned off the device as soon as I noticed this overheating.

Damage: The extreme heat has caused visible damage to the display, with dark spots and black areas appearing on the screen. The top right area, where the heat was concentrated, seems particularly affected.

Service for VMI Report: During the Visual Mechanical Inspection for the report, the technician used the device for about half an hour, potentially causing more internal damage.

Current State:

VMI Report: The report indicates no physical damage, suggesting this overheating might be related to the same manufacturing issue that caused the lines.

Safety and Functionality: The device now poses a fire risk due to overheating and has functional issues due to the damaged display pixels.

Request for Help:

I'm aware that many users with 2021 iMacs have reported similar issues with horizontal lines, suggesting this is not an isolated case but a manufacturing defect.

I'm seeking advice on how to get Apple to make an exception for repair or replacement, given:

The known defect.

The assurances given by Apple representatives which led to this safety and functionality issue.

The fact that I already paid for an inspection that did not foresee this outcome.

Has anyone here had success in getting Apple to address similar issues post-warranty or been granted an exception for repair/replacement?

Any advice on how to proceed with Apple Support in the USA, given the Indian team did not resolve this adequately?

Additional Information:

I have documentation including the VMI report, service history, and forum discussions about this defect.

Thank you for any insights or support you can offer. I'm keen on resolving this safely and ensuring my iMac doesn't pose a hazard to my family.

Best regards,

Karthick

Took it to Apple Store today, I was offered screen replacement for $648 plus tax, which would be $690.93. I am thoroughly disgusted. I will look into filing a complaint with the state division of consumer affairs.