2021 Macbook Pro: part of display is going dim

Yes it looks like a hardware issue with the Display Assemble...

Don't take my word for it—

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple Support - Apple Support

Just for additional background for Readers who care:

Your display is made up of tiny sub-pixels that can light up more or less intensely. What we see as white is made up of Red, Green, and Blue sub-pixels.

I don't do this every day, but I think including extra Blue in a mix or Red and Green would give you White instead of Yellow in that section.

It would be interesting to know if you get extra Blue with any other patterns. But it does NOT change the result -- your screen need an evaluation, and likely replacement.

I recommend service.

Service Checklist:

• Mac service pricing.
• Check AppleCare Coverage.
• Get your Mac ready for service.

Click ▶︎ Start a Service Request. ⚛️

Need more help?

• Call 1-800-APLCARE.
• Contact Support.
• Mac Support.
• Mac User Guide.

Click ▶︎ Check Repair Status. 🔧

Good luck! 👋🏼😉

"2021 Macbook Pro: part of display is going dim: I have a 2021 14" Macbook Pro (26.2) and today I noticed part of my screen got dim. Would this mean that my display is dying? I used a yellow picture and went full screen and you can see the right side of the display the color is different. [...]Are the displays DIY swappable, or would apple need to authorize the new display to work with my device? I know on certain apple products aren't very repair friendly."

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Thank you for the photo.

For Thought...

Mirroring the Screen:

If don't have the finances nor the availability to get a new screen, then mirror it (in the meantime) to an external one, by holding down: [command + F1]. Connect the external monitor though a HDMI cable, by using this adapter on you Mac: USB-C Digital AV Multiport Adapter - Apple; in doing so, you'll have a female USB-C port available to plug items in, particularly that of your USB-C power adapter.

bdizzleyadig wrote:

Are the displays DIY swappable, or would apple need to authorize the new display to work with my device? I know on certain apple products aren't very repair friendly.

Apple does offer a Self Repair Program in some regions for some models, but it is not for the feint of heart. Only someone who has experience repairing laptops, phones, or tablets should even consider it. I've been repairing Apple laptops since the 90's and the recent models are an absolute pain to work on.....so many tiny screws and very fragile & easily damaged cables & connectors (even when extreme care is taken).

I've seen some users asking for help on this forum because they were having issues completing their own repair which involves needing to complete some special Apple service configuration & calibration utilities which can sometimes have their own problems.

I don't recommend this option for the average user. Even some repair techs should avoid it if they've only repaired non-Apple laptops....they are night & day different on difficulty. At best you save $100US on labor.