Our Barco projector has stopped working - we were watching somthing the other night, and the screen just went blank. All 3 lamps on the projector are failing to illuminate. Checked the fuse - not that. can all 3 lamps have blown at once? there was not 'bang' when they went off. Not the Pause button. Can hear the fan. Can't see any image on screen, so unaware of any 'warnings' or 'failure' messages.