So far I've taken most of the projector apart, and cleaned it with compressed air as best I can but the symptoms have not changed. When it was first turned on after being reported as not working, the projector seemed to turn on fine with the lamp being lit. However when I went to get a device to give it an input signal, it turned off and has not turned on again since.

Office Equipment & Supplies - Optoma - Projector Hd600x-lv