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A1708/EMC 3164 — Released June 2017, this entry-level MacBook Pro retains its traditional function keys (as opposed to the OLED Touch Bar).

Grey shadow in the bottom of the screen

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Hi all,

I just went out of warranty with my 2017 mbp 13 inch, but recently I noticed this grey bar at the bottom of my screen. It only happens after about 3 to 4 hours of usage and when I turn the mac off for about 30 minutes the artifacting disappears again for about another 3 to 4 hours, after which the issue occurs again.

I did some looking around and I hear it is similar to the flexgate issue, but there are two factors that may mean its a different(?) issue:

  1. The screen is perfectly fine for the first 3-4 hours of usage. The grey bars start to appear at random and is not affected by the macbook’s thermals ( maximum of 65 degree CPU temps in a test, average about 55 degrees Celsius )
  2. The screen can be turned on beyond 40 degrees. I have never experienced any screen blackout as of yet ( though this could mean that the damage to the cable is still minor and this will occur with time)

I have not visited an apple repair store yet due to the coronavirus, but from the calls and the emails that were exchanged, the repair guys seem unwilling to replace it for free because it is not the 2016 version.

is a 600 dollar replacement the only way out?

This is my first apple product that I have saved for 2 years to purchase ( with my student savings) because I have heard about their legendary reliability and longevity from my friend who still uses the 2012 mbp to this day. Seems like this brand trust is unfounded with how easily the new macs break down .

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No, this is not a FlexGate issue. But it is a display issue just the same.

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Not good ;-{

The T-CON board which is mounted between the heat sink radiators has started to fail from heat damage.

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This image is the Touch Bar version which has a dedicated GPU and two fans. Otherwise it’s the same.

The display assembly will need to be replaced to fix it. For now you can help reduce the effect using a good thermal management app like TG Pro so you can pump up the fan a bit to help keep the system cool.

But the most important action is making sure the vent areas are clean from anything blocking them like bedding and clothing. You may also need to dust out your systems fan and fins as well.

I would still visit an Apple Store to see if you can get the display assembly replaced under a warranty exception. Given the store was closed due to COVID-19 you couldn’t get in to get it looked at. I would not call, just go, as the support people on phone tend to shut people down on these types of issues.

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4 Comments:

do you think I can get it replaced with the coating issue I am having

?

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That works too! Focus on the coatings when you call to make an appointment for the genius and when you speak with them. Don't discuss the bar. I would take the time to pop off the bottom cover and with a magic marker mark one of the hinge plates so you have a way to know they replaced the screen for sure.

In the meantime you do want to get TG Pro (full version) as you want to log your temps and take note when you see the bar. Go into the log and using the time point you saw the line see what the temp was and then roll back a few degrees and set the turbo for that temp. You may need to do this a few times. That way when you get the new display you can prevent it from cooking again.

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@danj will do! now to cross my fingers and convince the people at genius...

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@Jason Jason - Don't forget to accept the answer, Just keep to focus on the coatings!

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Jason Jason will be eternally grateful.
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