iFixit - Answers With Device "LG UltraFine 5K"

LG UltraFine 5K: Green tint on screen

Sun, 25 May 2025 05:31:15 -0700

Hey ifixit community,

I have a question about a 24” LG Ultrafine 5K Monitor. The screen shows a picture, but it is equally greenish tinted, see attached photo.

I tried 2 different MacBooks and different cables. Also the screen has 2x usb-C input and it doesn’t make a difference which one I’m using.

I assume it’s a hardware defect on the mainboard, the question is if the defect allows to narrow down, where to search on the mainboard.

Do you have an idea what could possibly be the problem?

Thanks!

⟐ Commented May 25, 2025 at 5:31 MST

LG UltraFine 5K: Replacement part for thunderbolt connector

Sun, 23 Mar 2025 15:48:18 -0700

Does anybody know where I can get a replacement thunderbolt port for this? The one I have is broken off from the board and damaged internally so it needs to be replaced but can't find the part anywhere.

⟐ Commented March 23, 2025 at 15:48 MST

LG UltraFine 5K: Part of display/backlight won't dim - remains bright

Sun, 31 Mar 2024 22:43:45 -0700

Hi, I have exactly the same issue shown here:

https://www.youtube.com/watch?v=JY_OdRQs...

Would this be related to the Texas Instruments LP8860AQ1 LED Driver as shown in the ifixit page here: LG UltraFine 5K Teardown Or Is it likely to be something else?

This is a replacement motherboard from a second hand unit. The thunderbolt port on mine died hence why I replaced the motherboard. Something I have noticed with this new MB is that when you power it on the right hand side of the screen (exactly the area as shown in the video) flashes white - yet my original MB did not do that, hence I am convinced it is the motherboard (the same thing happens with the MB in the original unit (but the screen on that is cracked)).

The only other thing I can think of is it could be the connector for the backlight?

⟐ Commented March 31, 2024 at 22:43 MST

LG UltraFine 5K: I can't open monitor back cover

Wed, 04 Jan 2023 09:54:29 -0700

Could you help with instruction how to open monitor back cover - I can't understand how to do it? I already have been removed 4 screws, but how to find clips and what to do next I can't understand.

⟐ Commented January 04, 2023 at 9:54 MST

LG UltraFine 5K: Webcam has stopped working

Tue, 15 Nov 2022 12:49:10 -0700

My webcam images went from being highly static-y for a while, to now no longer working. When I launch an application that uses the camera, no image appears and eventually MacOS suggests (within the image window) that I try restarting my computer. That hasn't worked. I suspect it's a hardware issue, but I am not yet sure how to attempt repairs.

⟐ Answered November 15, 2022 at 12:49 MST

LG UltraFine 5K: Suddenly completely dead - even fan doesn't work

Mon, 28 Apr 2025 05:07:53 -0700

Suddenly acts as completely dead - swapped out cables and power with another same monitor which works fine - still dead. My uneducated guess would be power supply or similar - how to check and repair?

⟐ Answered April 28, 2025 at 5:07 MST

LG UltraFine 5K: Monitor no longer powers on

Fri, 06 Dec 2024 12:56:22 -0700

The monitor no longer powers on, and does not connect or power my MBP. It sounds like this is a common issue. Has anyone else solved?

⟐ Answered December 06, 2024 at 12:56 MST

LG UltraFine 5K: Camera, mic, and speakers not working

Thu, 18 May 2023 12:54:14 -0700

While my three-year old 27MD5KLB-B's display is excellent, the camera, mic, and speakers have stopped working. I'm pretty sure the issue is with the monitor as they do not work across various MacBooks and even a Windows laptop that I've plugged into it (but display works every time). Any suggestions?