This problem is most likely caused by one of the following. Another possibility may be that the mirror inside the unit is hung up on an internal part and has not dropped into proper position. There are now two white wires. Both white wires should be twisted together and connected to the existing single white wire when reconnecting the fuse assembly. The lamps in my projector seem to burn out very often.
Many variables affect lamp life.
Temperature and voltage have the largest impact on lamp life. In warmer environments, lamps will not last as long as in cooler environments. If the line voltage at the outlet is in excess of 120VAC, lamp life will be decreased significantly. Even an increase of 1VAC to the 120VAC at the outlet can dramatically shorten lamp life. B. Remove the lamps before transporting the projector.