Thanks for the reply. As for what's wrong with the projector--after being on for a couple of hours the image turns deep blue. This may have something to do with overheating, because if it is turned off for a while, the image goes back to being white. (The projector has been used for 8 hours day, 5 days/week, for around 3 years).
Regarding the price--it is very frustrating because, here in our large educational institution, we have to pay for these projectors from money generated locally in our department, but the purchase is made by the institution's "Information Technology Services" and we have no control over the price.
I am told that when the faltering Sanyo was initially installed 3 years ago, the cost was $10,000, and it replaced a projector that was failing, so it wasn't a completely new installation.
I am trying to get my boss to push for an investigation of the high prices, but he does not seem too interested...
EDIT: Sorry, I should have mentioned that it is a pretty basic classroom installation, I think. The projector is about 8-10 feet from the screen, I would guess. The ceiling is one of these with the removable soft panels. The wires run above the removable panels, then down through the wall at the front of the room to a panel near the bottom of the wall (same wall that the screen covers, in the front of the room).
[Edited by tanstaafl on Sep 5, 2013 at 5:13 AM]