Question about InFocus Projector Lamp for LP340, LP340B, LP350

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SP-LAMP-LP3E powers off in 5-20 secs after inital power on

I have an Infocus LP340 where the lamp powers off in 30 secs after the projecter powers on. I've replaced the lamp with a working lamp and there are no issues with a new lamp. If I put the other lamp back in, the problem occur again. So, I know this issue is with the lamp assembly. The lamp with the issue has less than 200 hours. The status on the projector is a solid green. I can put the projector in standby mode and wait 2-3 minutes and wake the projector up. The projector light will come-on and then power off in about 5-20 seconds. Has anyone experience this problem? It sounds like a ballast problem. Is the ballast part of the lamp assembly? Or is there someone else in the lamp assembly that you cause the bulb to power down after 5-20 seconds? If the ballast is part of project, it okay because the new lamp doesn't have any issues.

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If the new lamp doesn't have a problem, then it's not the ballast, it's just a bad bulb. especially if you didn't get it from infocus. the cheaper lamps don't last long. you get what you pay for.

Posted on Aug 03, 2009

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Posted on Jan 02, 2017

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I need help how to reset my infocus. it can not detached into my computer. I try to set it in menu but I can not get it. some one please guide me how to reset. Here is my email va_lee@sbcglobal.net Thank...


If you have an Infocus LP340 or LP350, you can reset the lamp hours by pressing and holding down the - volume button and then press the menu button (while still holding down the - volume button) for 6 seconds.

Feb 13, 2010 | InFocus SP-LAMP-018 Projector Lamp for X2,...

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How do i find out if i need a new lamp for my infocus 4805. when i turn it on the fan blows for a cpl secs and the green light blinks a few times, but i dont get anything saying the lampis out


when you power it on, do you hear a high-pitched whir? if not, you need to replace the colorwheel. it's also the colorwheel if you hear a buzzing instead. if the colorwheel does not spin, the lamp won't come on. if the colorwheel is ok, check the lamp. is the screen on the side of the lamp clogged with dust? is the inside of the lamp bulging, spotted, or foggy? if so, replace the lamp and clean out your projector with canned air. dust blocks air flow and keeps in the heat. this shortens the life of your lamp and projector. if you do need the colorwheel replaced, you could get the part from an infocus service center and do it yourself, or send it in for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com

Dec 27, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

I have the same issue minus the clicking


check the lamp for bulges, black spots, or fogging. if that's ok, check the colorwheel. if that doesn't spin, the lamp won't light. if they are ok, replace the ballast.

Sep 30, 2009 | InFocus SP-LAMP-LP3F Projector Lamp for...

1 Answer

InFocus Won't turn off, no powering down, and no projection


The 4805 does not have a power button it has a power switch next to the mains power connector but that switch has no lights near it.
If you meant the power light on the top of the projector right next to the menu button is yellow that is bad. it indicates that the main board is not working which would explain the projector always being on. also the led being orange means that both the green and red led's are on at the same time (this is BAD)
This is not a valid function for the led's. Another indicator that the main board is wacked. By the way if you received the projector less than 30 days ago you can file a claim with the eBay resolution center that the projector is not as advertised/Described in the listing. And you might be surprised when you get your money back! the "NO RETURNS"is null and void if there was any gross misrepresentation or deception in the listing!! i.e. Not as described...

Sep 19, 2009 | InFocus In Focus SP-LAMP-021 Replacement...

1 Answer

Infocus x1a projector shuts down after 30 seconds - dust problem ??


do you have the correct lamp? the x1a takes an sp-lamp-009, that has 2 white wires, and not the more common sp-lamp-018 which looks exactly the same except has one white and one red wire (and are in different plug positions). if it still doesn't light, there is another issue (possibly the colorwheel) along with the lamp timer reset.

Mar 18, 2009 | InFocus X1 Multimedia Projector

1 Answer

Projector will not fully startup


the colorwheel is bad. and what's worse, you can't get parts for the lp340 anymore.

Dec 01, 2007 | InFocus SP-LAMP-LP3F Projector Lamp for...

1 Answer

Replacing bulb


hold the volume up/down in ,switch unit on while holding these in for 30 secs, if that fails, flash unit with new software.

Dec 01, 2007 | InFocus In Focus SP-LAMP-021 Replacement...

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