LCD Toshiba TLP s10

My projector has a lamp usage of 488 hours and all of a sudden the picture has turned green.  When I power the projector up the colors are appropriate.  The toshiba words are in bright white however, when I hook it to my computer it turns everything greenish.  I tried a different computer and it did the same thing.  I have hit auto adjust and it does nothing.  I had not done anything to the contrast, brightness, etc.  Can you help??