2018 MBP: Odd dark spots on the display

Discussion in 'MacBook Pro' started by afir93, Jan 5, 2019.

  1. afir93 macrumors 6502a


    Jan 5, 2018
    I've had my 2018 15" MacBook Pro since August. A few weeks ago, I've noticed some somewhat darker spots at about the middle of the display. It's particularly visible with bright colors, not so much with very dark ones. It's the most visible when displaying monochrome backgrounds (i.e. a white background with black text in a browser window, a pdf or document); when there are lots of different colors on these parts of the display then it's practically invisible (i.e. when watching a movie).

    I've already been on the phone with Apple support and will likely bring the device into an Apple-authorized service provider near my city sometime next week or the week thereafter (don't live close to an Apple Store unfortunately); I expect the warranty to cover it. I just figured I might also create a thread here and ask if anyone has had similar issues, or has an idea what might be the cause of the issue?

    I'm attaching a photo of these spots on a white background, it's the same picture in both files but in one I've circled the outline of the spot to make it clearer what I mean, since it's not that great to see on the photo (but still visible).

    I've initially thought about backlight bleed but I don't think that's it since backlight bleed (to my knowledge) is usually the most visible on black colors, and less/not visible on brighter ones, whereas mine is the opposite. It reminds me a bit of how the flexgate-issue looks like; however the spot is not at the bottom of the display for me like it's usually with flexgate-affected displays. It's also nowhere near as strongly visible as with most flexgate example photos, but still a nuisance (and I feel like it has gotten a bit worse since I initially noticed it).

    Attached Files:

  2. patwithamac, Jan 5, 2019
    Last edited: Jan 5, 2019

    patwithamac macrumors member

    Jul 30, 2018
    That looks/sounds very similar to my experience.
    I wrote about about it a few days ago here.
    My dark shadow was in roughly the same region of the screen. Perhaps a little more to the left.
    They replaced my display (under warranty).
  3. patwithamac macrumors member

    Jul 30, 2018
    It's been a little over three months since my display was replaced. The same thing is starting to happen again. It's been gradually getting worse. I made a genius bar reservation, took it in, and they confirmed it. There were no displays in stock, so they've ordered a new display, and will be replacing it at no cost [again] later this week.
  4. davidrellis macrumors member

    Jun 29, 2012
    I’ve just turned in my laptop to get it replaced a second time since December. I was told that because I use accessories on it (screen protector, cloth between keyboard and screen, and a keyboard protector) those might be the cause, which I think it’s ******** and that if the issue happens again then it’d be possible they won’t replace the screen again.

    Did y’all have any accessories on your laptop when you started to notice the blue tint?
  5. patwithamac macrumors member

    Jul 30, 2018
    I don't use any screen and/or keyboard protectors.
    I do use the tissue paper (that it came with new from the factory) when I close the lid. This because I've noticed that the clearance between the keyboard and the screen is so small that when the lid is closed, skin oils were being transferred from the keyboard key caps to the screen while the lid is closed. I hate a screen with smudges. So, I use the tissue paper to help prevent transfer while the lid is closed. When there are smudges on the screen, I use a moist micro fiber cloth to clean the screen.

    I can just hear it now... Apple's gonna start telling users they have to use white gloves when typing on the keyboard, so skin oils don't transfer from your finger tips to the key caps, and subsequently to the screen when the lid is closed. Sorta reminiscent of the "Your holding it wrong" days.
  6. afir93 thread starter macrumors 6502a


    Jan 5, 2018
    Yeah I'm with you, I don't really see how these super-thin cloth protectors can cause clearly internal, unevenly lit areas of the screen.

    I had such a blue-ish spot on my 2018 15" MBP around Christmas, never used a screen/keyboard protector cloth or anything like that before. Fortunately I got it replaced without issue.
  7. patwithamac, May 11, 2019
    Last edited: May 11, 2019

    patwithamac macrumors member

    Jul 30, 2018
    This looks like a backlight problem to me. Not a problem with the actual screen surface material. It seems like the backlight develops an uneven, or inconsistent, non-uniform light temperature. Or the substrate that the backlight is on develops a ripple, so it's not completely flat. I wish I could get my hands on one of these displays and tear it down so I could see what's going on behind the LCD.

    EDIT: Maybe there's something going on with the true tone feature. Have you noticed any difference with the true tone option turned off vs turned on?
  8. magicalelectron macrumors newbie


    May 22, 2019
    New Jersey
    This must be irrelevant to True Tone. Similar phenomenon happens on older versions (2016, 2017) mbp too.

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7 January 5, 2019