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if it is overheating, blow out the projector with canned air. excessive dust keeps in the heat that the projector is trying to expell. also, make sure all of the fans are working properly. if it's cleaned out and the fans are running, you may have a main board issue.
I would try cleaning the fan or possibly watching the fan and make sure it continues to spin nearing the 10min window. Also those fans can be intermittant or fail when the become warm or the bearings could be going bad or gawling. Is the fan noisy at all? Also the lamp could be going bad or the ballast power supply. Projectors are tricky puppys. But you may also check the safety switch near the opening for the lamp. There should be some sort of blue switch which is closed or activated when the cover for the lamp is put back on. Hope this help you out. Let me know if it does. I am trying to become and expert advisor. Thank you in advance. Jay
Mine does the same thing and I just replaced the bulb after waiting almost 6 months and I purchased one directly from Radio Slack. It will turn on for about 10 seconds and then goes into shut down.....At three hundred dollars I can't see putting another bulb in, when this one has less than 50 hours on it.