Sony VPL-HW10 video on all inputs green, but menu looks fine

My HW10 has started only showing a completely green video image, BUT the on-screen menu looks 100% correct, with its normal blue and yellow menu interface. It seems like the actual "processing" of the video input itself is messed up. This happens on HDMI, VGA, Component, Composite. All settings in the menu appear to be working correctly. I've done a settings reset and left the projector unplugged for hours, with no improvement.

I'm guessing I'm screwed and some entire PCB in the projector needs to be replaced... Which would probably be prohibitively expensive compared to just buying a new projector :\