I have thrilled the unit now for 2 months and am actually. But since yesterday I have the so-called image retention which causes an image to the screen "branding". It comes after a period gone but is still an unacceptable situation. Test whether you can you also affected since that. To trigger the problem is to choose a darker screen background suffices (also used by Apple in its original condition wallpaper) to place a window somewhere, about a 5-10 minute wait and then push away the window.
The curious is that there appears to be only for panels from LG ... Panels from Samsung do not seem affected. Test Panel which you have so you can:
Find out your display manufacturer: Open Terminal, copy & paste:
ioreg -lw0 | grep \ "EDID \" | sed '/ [^ and then press enter. If the result starts with LP It's an LG, if it starts with LSN it's a Samsung.
