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Projector won't stay on

I have a Sharp XG H400U LCD Projector. In a nutshell it won't stay on. I power it up and it shuts down. While on (however brief) the lamp light is green. I've cleaned the filter. Won't the lamp light be red if I need a lamp? I don't have a manual. Any ideas what's wrong with this unit?

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  • wabishop57 Jan 05, 2009

    I have the same problem, when i turn it on it will stay on for about 15 minutes then it turns off, fan and all. I can immediately turn it back on but it will only stay on for a few seconds before turning back off. If i leave it off for a while, then turn it back on, it will stay on for another 15 minutes before turning back off.

  • visions1 Jan 06, 2009

    I have the same prob, but turns off immediately.Can see the lamp strike just before it turns off.



  • fixyaglh Jan 18, 2009

    Problem with Optoma EP739 projector: Projects seems to start normally; after about 1 - 2 minutes of use after apparent self-check, lamp turns off and indicator light on top of projector (labeled "Lamp") switches from green to red. Manual says "When the “LAMP” indicator lights solid red, the projector will automatically shut itself down. Please contact your local reseller or service center." The nearest reseller for me is around 4000 km away. I've left telephone messages at a US sales and service center, but do not get return calls. If there are no ready, simple fixes (or things to try), I suppose I can mail-order a new, inexpensive projector, and anticipate potentially replacing it every 2 - 3 years. Even at $1000 each, replacing at such an interval would be cheaper for me than buying a similar Optoma and having a problem every 3 years.

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Most projectors have a filter that can be removed and cleaned. Perhaps it is clogged or you may need a new bulb.

Posted on Apr 27, 2009

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