Thanks for you help, 57. You guys on here are always so helpful.
I tried unplugging the HDMI and the green screen went away after a couple minutes. I plugged the HDMI back in and it worked. However, the problem keeps recurring whenever I turn the projector off and on again. When I turn the projector back on, there is a pinkish tint (the EPSON logo appears in pink instead of white) and then the green kicks in after a few seconds.
Any ideas what the problem might be? Without seeing anything, what's your best guess? Is the problem the projector, the HDMI cable, or the home theater receiver we're running everything though.