Dark Smudges on neo1973 screen .. heat-related?

[Andy Selby]

> Maybe its karma or something but in the last 24 hours I've noticed
> that there is a very dark smudge on the LCD on my neo1973 .. this
> happened after I left the neo1973 on all night, and it appears to be a
> permanently damaged LCD - nothing I do has been able to get rid of
> it.  Could it be possible some heat-related issue is causing this
> damage?  I will take pics and upload shortly ..

Found this about the mura effect
http://www.behardware.com/articles/589-1/panels-a-carte-mura-components-dead-pixels.html