I picked up a Barco Retrographics 801s on the cheap (not really understanding what I had.) It worked great for a while. But then the colors went all weird. It seems I'm not getting any green at all. Since the menus use the green, I couldn't very well run a self-diagnostic or read any error messages. I'm just wondering if there's an easy way to determine that it is, in fact, that gun (and not some more complicated problem with the circuitry further up the line). I've had the covers off and there's no light coming out of that tube. I have also taken some photos: http://www.furioso.com/furiousstudios/bigscreen.html Any help would be appreciated. This thing is a monster and I don't relish the thought of trying to lug it down to a repair center. Thanks in advance.