PS: The spot is not green, that's the wall color. It's basically just faded. Also, that lighter blue spot on the right must just be my poor photography skills.
When I first got my unit, it had similar symptom, and as the Optoma tech diagnosed, it had a chewed up wheel (afterall it's plastic) due to heat under long hours of operation. They eventually replaced my unit with a refurb.
Gunna call tech support this weekend. Up until now the projector has been amazing.
My GT720 did the same thing. Took it apart and found the lenses had melted. The big lens was black through the middle and the others were cloudy. The mirror was also cloudy. I have ordered a replacement from eBay. A used part that includes the lenses, light tunnel, and mirror. I'm going to just swap my good parts over to the new one. I've read that aftermarket bulbs can cause the lenses(made out of plastic, by the way) to melt. It's apparently a known issue.
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