Originally Posted by cjmv50
I got an AE900 last thursday and got it set up and noticed a one thing that is starting to annoy me. I have a 92" diagonal matte white Da-lite screen(1.0 gain). The projector is mounted on a high shelf about 14 feet from the screen. My problem is the is a green spot about 10" diameter center at 25" from the right side and 11" from the bottom. This can only be seen in black or near black scenes but it's always there. Anyone see this?
My 700 has two such spots, both of which are green, but much smaller than yours (2 1/2"). Mine are clearly dust specks, presumably on one of the dichroic mirrors. This is a little hard to explain, but the color system works by combining all colors to create black, and so a speck on, say, the "red" dichroic mirror blocks that portion of the color spectrum, and green is what passes through where it would otherwise be black (OK, dark gray!). If you have this problem, still-frame a revealing shot, and substantially defocus your image until you've thrown your LCDs way out of focus and brought the plane of the (alledged) speck into focus. If you have the same thing as I do, you'll see the faint green disc narrow into focus until it's a blazing, well-defined speck of dust. Your particular throw distance may prevent you from bringing it perfectly into focus. You'll see zillions of others, in all three colors, but only the largest "supernovas" among them create a speck bright enough to be visibly bright when enlarged and thrown so far out of focus while the lens is focused on the LCD plane.
Make sense? Even a person not experiencing this problem can get quite a jolt by bringing the mirrors into focus and seeing how much crap accumulates on them.
No matter what you've got going on, it sounds like you shouldn't have to live with it, considering you just got the damn thing out of the box. I managed to get the inside poop on how to remove these specks relatively safely, and just haven't gotten around to opening my 700 (and swiftly voiding my warranty). If I were you, though, and you find your problem to be as I've described, I'd just demand another unit ASAP.