Question about InFocus LP70+ Multimedia Projector

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My projector comes on the fans come on but the lamp never comes on I assume the bulb is burt out but the red light has not come on it recently endured a usps journey overseas so is it more likely the projector is damaged or the bulb is burn't out

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It could be the bulb, but you need to gently shake the unit to see if anything is loose inside. If anything inside broke lose it could have lodged in the groove that the color wheel spins in. If the colorwheel is prevented from spinning the unit senses this and won't light the lamp.

Posted on Nov 13, 2010

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Posted on Jan 02, 2017

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Projector starts up but after 30 seconds a red fault light comes on NEC LT25 projector


You might require a new bulb, or check the fans to make sure they're all still spinning.

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seems that the lamp is defective, pls test it

Have a good day! any question ,contact me,Please
We supply original projector parts: lamp, bulb, Lcd panel, Lens, DMD chip, color wheel,
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Projector lamp solid red after replacement


1,Check the fans ,whether the fan is running,when you turn on the projector
2,if the fans run, then ,check the lamp or lamp ballast
We supply original projector parts: lamp, bulb, Lcd panel, Lens, DMD chip, color wheel,
motherboard, powersupply ... with high quality and competitive price.
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Feb 04, 2014 | Panasonic Lamp For Panasonic PTAE900E...

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I've just replaced the lamp on my Panasonic PT-LM2E projector and it will switch on but no light comes out. The previous lamp blew in the projector after around 2000 hrs. The indicators are as...


I'd recommend checking the fans of the projector, and make sure that they're spinning. Since you've mentioned that the lamp blew inside the unit, bits and pieces of the lamp might have lodged itself within the fans. It might also have to do w/ the after-market replacement bulb, which I normally wouldn't recommend.

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What bulb is needed to replace in the projector?


three green lights come on then the standby light goes red and remains on when the projector is plugged in. The lamp and fan do not come on when the power button is pressed instead the lamp light comes on red.

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Fan works, light won't come on. bulb tested fine.


Jason's analysis above is correct! You can order the Thermal Fuses and Lamps (if you need them) from: www.micro-tools.com
Good Luck !! Jim

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1 Answer

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Problem 1) The projector should put out a burst of 7000-15000 volts to start the lamp, and then immediately drop down to 60-100 vlts to keep the lamp lit. It sounds like the bulb blowing took out your ballast, or the ballast going out took the bulb (uncontrolled current = overheated bulb = boom)

Problem 2) Thats not a problem at all. HID lighting uses an arc to create light, just like welding creates light. Since it uses an arc, and not the heating of metal, there is no filament to test the resistance of. All the bulb is, is a special mixture of gasses and two very durable electrodes, with a gap in between.

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As there were no indicator lights lit I focused on the AC. The projectors work as they should in another location and as such I am fairly certain the problem is associated with the AC power in the particular room. I haven't isolated the exact condition as yet.

Thanks

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