Display mark MBP 2015

[wailjdii]

Hello, few days ago I bought a used Mid 2015 MBP 15 inch. Unfortunately I didn't notice the screen has a mark in the middle. (as I mostly tested it on external screen, because that's how I mostly gonna use it) Best seen when the background is white. Can someone tell what is this? and what may cause it? Or maybe it's possible to get rid of this mark? At least cleaning with wet cloth didn't help

Thanx in advance.

 

[Sanpete]

Are you talking about the slightly darker stripe across the screen? Looks light a backlight diffuser issue, or something akin to that, which isn't something you can fix. May be time to take the machine back.

 

[wailjdii]

Are you talking about the slightly darker stripe across the screen? Looks light a backlight diffuser issue, or something akin to that, which isn't something you can fix. May be time to take the machine back.

Thnx for the answer!!

Yes the slightly darker stripe.

What may cause the screen mark? Will it progress and should I be concerned? I know that the laptop has a changed keyboard, because of liquid. Can this be the reason?

 

[Sanpete]

Without seeing it better it's hard to tell what it actually is. Could be something on the surface of the screen too, but it's hard to see how a liquid spill would cause that pattern. Can you see any mark when the screen is black? If not, it's probably internal. Does it shift at all if you tilt the screen to one side or the other? You could take it to an Apple Store to see what they think it is. I doubt it will get any worse, in any case.

Was the liquid spill and keyboard replacement fixed by Apple? If not, it might be a good idea to check to see if it needs cleaning inside. To do it yourself I believe you'd need a special pentalobe screwdriver, which you can get online. No doubt there are videos online.