Help on Optoma H77 (1 Viewer)

[Mike N.]

I have an optoma h77 projector that is giving me troubles. About 20-30 min into a movie, usually during an action scene the projector will "glitch" and distort the image with white blotches and just ruin the picture. I would best describe it as the projector spazing out and flashing white all over. Does anybody know what I am talking about? Thanks in advance for any help!

 

[Gregg Loewen]

sounds like something heat related ?
When was the last time you cleaned the filter ?
How is air circulation around the PJ?