Bulb comes on; no menu available
I have an older InFocus projector (bought in 2005?). Haven’t used in a decade. I turned it on, the bulb lights up and projects on the wall, but that’s it. I can’t get it to even display a menu, and when I connect it to my MacBook, nothing new is displayed, just the square block of light from the bulb. Any thoughts on resurrecting this old projector? Thanks!