NEC LT240K bulb cuts off regularly - AVS Forum
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post #1 of 7 Old 01-16-2013, 03:54 PM - Thread Starter
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Has anyone else seen this problem, and is there a solution?

After about 3 minutes of operation, my LT240K's bulb goes out. Both the power and status indicators are blinking together -- the power is orange and the status is red. The status indicator is a 6-cycle "Lamp Error." I think.

I turn off the power and let it cool for 5 or 10 minutes, then restart it. Sometimes it will continue for the length of a movie after that, other times it will cut out again after a couple of minutes, and it will do it several times.

The bulb meter says "49%," so I don't think it's the bulb. Or could it be?

The fan is running. I've checked all the vents -- there is no dust clogging. When I take out the lamp unit, there appears to be no dust accumulation.

This happens in standard or eco mode, and it happens whether it's on the ceiling or on the floor.

I like the projector and I've never had problems with it before -- got it in 2004. I don't want to replace the bulb if the projector is just toast.

A friend of mine suggested that it was an issue with a component in the power supply. I assume that that would be something that would need to be serviced and would probably cost almost as much as replacing the projector. Or could I be pleasantly surprised?rolleyes.gif

Any ideas?

Thanks,
David
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post #2 of 7 Old 01-16-2013, 04:26 PM
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A weak bulb can do that. Bulbs can expire or "go south" at ANY time, regardless of hours used.
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post #3 of 7 Old 01-16-2013, 04:54 PM - Thread Starter
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Thanks. I'll give a new bulb a try. Certainly beats a new projector!
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post #4 of 7 Old 01-28-2013, 09:01 AM - Thread Starter
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Got the new bulb, and no cut-outs! Much thanks for the advice. I was disappointed that the old (original) bulb only gave 51% of its advertised lifetime, but the new bulb is still way cheaper than a new projector.

Having had some experience with the ViewSonic PRO8200 1080p DLP, I can say that the NEC LT240K represents the tonal range in a much more satisfying manner, even if it supposedly has a lower contrast ratio. I'm happy to stick with the projector I've got.
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post #5 of 7 Old 01-28-2013, 04:28 PM
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Now, did you get an OEM bulb or a much cheaper "generic" or so-called "compatible"? Too many people have been "burned" trying to save a few bucks on the lamp only to find that it either failed in a very short time, or worse, damaged the projector. I know of at least 2 people with NEC projectors that had burned optics because they bought a cheap lamp.

Just askin'.

BTW, glad to see that was the lamp. On the lamp hours, take those numbers with a grain of salt. Lamps can fail early, but they can also go longer than expected. It's a crapshoot.
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post #6 of 7 Old 01-29-2013, 05:57 AM - Thread Starter
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Oh, dear. eek.gif Wasn't aware that might be a possibility.

I paid $120. It was a U.S. seller, highly rated, and the delivery was excellent. (This after waiting a week for another seller who did not respond to emails or phone calls and who finally told me it was out of stock.) It wasn't advertised as OEM, so I suspect it was otherwise.

Would running it in Eco mode help reduce the possiblity of burning the optics?

Any links you could point me to about the problem?

Thanks,
David
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post #7 of 7 Old 01-29-2013, 07:01 AM
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Sorry to say that $120 is less than HALF of what you SHOULD have paid, which means you bought a "generic" lamp. I'm not saying that it WILL damage the projector, but there is that possibility. You can try running in ECO mode but if you smell anything unusual, shut it down immediately. You may get lucky and it lasts for more than 100 or so hours. Or you can try and return it.

As for links, just do a search in these forums or a Google search on the web for OEM or generic lamps.
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