Question about NEC VT491 LCD Projector

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Vt491 service manual - NEC VT491 LCD Projector

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Are you looking for it or do you have the service manual?

Posted on Jun 08, 2013


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Posted on Jan 02, 2017


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What to do?

1. Unplug projector and wait a minute or two. This will reset the projector.
2. Try a new (or a known-good) lamp.
3. Contact NEC. I wasn't able to find a service center in India, but here is a link to their global website:

Jan 15, 2015 | NEC VT491 LCD Projector

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I turn it on, the status light flashes... then it turns itself off, except the power button is still showing power and the status light is blinking red

Your bulb is not lighting.
Either the bulb has failed or it has a bad contact.
Remove the bulb to check condition and then reinsert and try again.
If it still does not light you will have to buy a new bulb.


Please dont forget to vote this answer was helpful.

Many thanks


Feb 28, 2011 | NEC VT491 LCD Projector

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The power button is steadily orange and it does not turn on.

Try pushing the "Cabinet" button and then powering on. If that is not the problem, then you need to replace your lamp and filters.

Feb 28, 2011 | NEC VT491 LCD Projector

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I work for a school district and one of our projectors is projecting a dim image. We have replaced with a brand new bulb and still have the same problem, however after changing the lamp there were pink...

You will possibly find that there is dust on the LCD units plus it sound as if the filters may have been blocked for a while, causing damage to the blus LCD unit giving a dull picture effect.
This is not repairable unless a new optical block is fitted.

Dec 17, 2010 | NEC VT491 LCD Projector

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Status lamp blinking orange 6 times


Jun 26, 2009 | NEC Office Equipment & Supplies

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Connect the projector to an external amplifier and speakers.
The speaker system built in is designed for watching movies etc in a small quiet room.

Hope that helps =)

Apr 11, 2008 | NEC VT491 LCD Projector

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