On Wed, 13 Feb 2008 15:28:14 GMT, Chuck wrote:

We have a XD460u front projector that will play all day as long as it
is right side up. When it is flipped over, shutdown occurs
immediately. I've subbed tach pulses for each fan but the shut down
still occurs. Has anyone seen this fault? Thanks. Chuck


I was told the bulb had been replaced but it hadn't. A new bulb
repaired the problem. Chuck