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Projector powers down as soon as LAMP lights up

I have a benq ds550, recently when switching on the projector, the fan spins up, the light switches on, and briefly for half a second you can the benq symbol on a blue background, then the projector switches off the lamp, the fans keep on spinning and then after 50 seconds it powers down completely.

Then the status LEDS: the lamp led blinks green for 10 seconds and then switches off for 10 seconds, the power led stays orange.

I've replaced the lamp and still the same problem. The fan works, and no dust inside the unit.

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  • fene4 Jun 09, 2008

    i have a Compaq iPAQ MP1200 and i cleaning the filter.than i put the power on and whan the lamp go's on than after a few seconds the lamp go's out ,but the fan keeps stay's on and the power on licht flikkering from green to yellow.grt fene4

  • eve_on Dec 21, 2008

    Optoma EP753

    The projector starts up as normal, lamp brightens up, vendor's logo and "Warming up, please wait" being displayed as normal.
    All of a sudden, lamp indicator LED begins to flash and the unit shuts off completely, leaving the standby LED flashing slowly.



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  • 2,236 Answers

The ballast/power supply needs replacing.

Posted on Dec 23, 2009

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