Question Weird vertical dark shadow "line" on my new monitor.

Lievet

Honorable
Jul 13, 2017
4
0
10,510
Hi.

A few days ago I got a new monitor, a Millenium MD 27 pro 165 HZ. On the second day of use, when I turned it on a vertical dark shadow appeared at the center of the screen. Weirdly, this shadow goes away after approx 30-40 mins once the monitor is turned on. Once it goes off, it doesnt come back even if I restart my monitor or plug/unplug it. On the third day i had exactly the same issue. Turned on the monitor, the dark vertical shadow appeared again, and after 30-40 mins the shadow went away. The monitor is brand new and I am really curious why does this happen. I guess the safe choice here is to return it back because its faulty somehow, but i am really curious what would be the cause of this dark shadow. I think it appears when the monitor has been off for some hours.
What I have tried is to plug/unplug it, and changing the DP cable to a hdmi cable. But I noticed the black dark shadow appears once i turn only the monitor on, so it has not to do with the PC or cables.


Here are two pics of the dark shadow i mean.

View: https://imgur.com/a/99WurgZ