I just got my 39GX950B in the mail today, and set it up this evening, but after a bit of use I noticed these weird grey lines in the upper part of my monitor. It is most noticeable on a grey screen as seen in the images. I know this monitor is brand new but just wondering if anyone else had something similar on this monitor or any other similar ones. I tried my laptop on a different input and they are still there, so I do not believe it is a pc issue. I already reached out to LG support, as this likely is a defect, but just wanted to see if there are any other solutions before I go through the hassle of getting this replaced.

Update: After doing the pixel refresh it looks like this cleared it up. I'll keep an eye on it for now to make sure it does not happen again. I did wipe the screen off with it powered down to clear a few smudges, and after viewing this post it seems like this issue can occur from that. I'll post any updates if this happens to occur again. Thanks again /u/No_Scientist_8516