Question Vertical green lines on my Dell Monitor

[Magic_Fox]

I was playing Super Mario 3d World using CEMU emulator, everything was alright until I switched it off and again boot it. There was a sleek vertical line that appeared near the middle of the screen.
Gave it a gentle press on the monitor(the line) and then suddenly it vanished. I kept on pressing a few times but the green line was gone for good.

Thing is Should I replace it? or was it a general glitch that I should overlook?

 

[SkyNetRising]

That's issue with your monitor. Contact between LCD matrix and connected electronics has somehow weakened. Could be dust particles inside or oxidation/corrosion of contacts.

Easy temporary fix is sticking a piece of paper under screen bezel at the top or bottom of the screen, where vertical lines are. This will improve contact and green lines will go away.