I am currently trying to convert an old Sharp XG-NV2U LCD Projector into a spatial light modulator, and have gotten stuck. The panels dont seem to be interfacing with the computer anymore, which is a problem since I want to use them to project diffraction gratings. Using two polarizing lenses, I have blocked out all light when the projector is off, and then when I turn it back on light is transmitted. So a voltage is getting through, but I cant get any changes regardless of what I am trying to send to the panel (black screen, white screen, stripes, checkers...). Any suggestions would be much appreciated. Cheers!