Update #2: Its fixed! I ran the extension cord and plugged the projector into the same power strip as the matrix switcher and the artifact went away.

Hi, all.I've got a Mitsubishi Medallion HD 1080 TV here at work whose projection screen has partly come out of the frame. Model number on this guy is WS-55413. I'd like to push the screen material ...

Projectors can create an image on any flat surface. So do you really need a screen?