Light leak from 2690wuxi Spectraview

[janm]

Hi guys,

New to the forum, found you guys when googling about my monitor which i bought second hand.

Its a spectraview so I expect the screen to be decent. I take astrophotography pictures for my hobby
and need my monitor to have a uniform black background so I can spot and fix gradients caused by light pollution etc.

Anyway when I got the monitor I switch it on to find its showing a greenish gradient emanating from the top right corner.
I've taken a picture to illustrate the problem. Experimenting with exposures this is the best likeness to what I see.

Is this a normal amount of light leakage?  


thanks,

Jan