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Optoma EP739 Projector Overheating

We have an Optoma EP739. It started shutting off with the message "Projector Overheated" on the screen. I cleaned all the vents and the fan but it still does it. It is three years old and only used on Sundays. It just started this about 2 months ago

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  • john_schiman May 21, 2008

    Same symptoms. My projector is about 4 years old. Used to work fine but now will only run about 45 minutes if cold. If already warmed up it will only run about 15-20 minutes before shutting down.

    Verified fan is running all the time. I even put a home cooling fan near the unit and it still overheats but not as fast.

  • 7_gixxer Jan 25, 2009

    We have 2x EP739 projectors at our church and are both about 3-4 years old. Both over the last 6 months have had the 'overheating' fault and will only last a max of 45 mins before they shut down!

  • Anonymous Apr 24, 2009

    Seems this is a common problem.  I have the same issue.  I have put a small fan to blow away all the hot air.  THis helps, but its not a solution


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Set the projector to "high altitude mode." It will be noisier, but won't overheat. I wonder whether using one of those $10-$20 laptop coolers underneath it might be a quieter solution.

Posted on May 25, 2009

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I have mine on "high altitude mode." and it still shuts down

Posted on Feb 15, 2010

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I set mine to high attitude mode and it resolved the problem. Fans get a bit noisy but not a problem. I also removed the back cover. Optoma EP 739

Posted on Aug 30, 2010

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