Mac Pro & Temperature Warning on Mitsu 55" Monitor


newbie macrumors forums here... thought might post see if here has ideas me.

picked 4,1 mac pro have been "upgrade" 5,1 mac pro. runs fine far , upgrade macbook pro using.

running strange issue mitsubishi 55" monitor (ldt551v display). have have brightness turned down 50% if doing lots of video editing otherwise mitsu monitor start throwing temperature warnings. surfing web, etc can have brightness higher before temperature warnings.

had 2009 mbp hooked same monitor years (using same mini display port hdmi cable) , never had issue @ all.

video card nvidia geforce gt 120 512 mb graphics

has run before? can video card drive monitor hot?
 



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