Question about InFocus LP70+ Multimedia Projector

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Infocus LP70 When I plug the power cord into the unit the green light goes on then off. I have tried a different power cord and the same thing occurs. The proector has been in the same position for 4 months and one day just stopped working.

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Re: Infocus LP70

Found a broken lead on the back side of the AC plug projector side...resoldered a piece of copper wire down to the circuit board and it is working perfectly again.

Posted on May 07, 2008

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Re: Infocus LP70 - InFocus LP70+ Multimedia Projector Multimedia Projectors

Its not geting power lust like mine

Posted on Dec 17, 2007

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Hi, I have a Infocus Projector, Model # LP70, serial # begins with ACAN. The projector only has 951 hours on the bulb. The unit powers on and I get the Infocus startup screen. as soon as I turn on a video...

I think it is the time to remove the cover and check for air filters blocked with dust.
When this happens, air doesn't flow freely through the projector and result in overheating, which leads to automatic shutdown.

Sep 22, 2011 | InFocus LP70+ Multimedia Projector

2 Answers

I have a Infocus Lp530 that as soon as you plug it in, all the lights on the top will continually flash green and an audible clicking sound can be heard. These two things occur before the power button is...

You can try removing the main board & reseating it. Also try plugging into another outlet & make sure the plug has a ground prong on it. Itshould have 2 flat & 1 pin shaped prongs. Otherwise the clicking sound may be the lamp trying to ignite. Normally when you plug in the LP530 the green power light is on steady & then you press it to start the lamp. If its flashing as soon as you plug it in it's likely that the main board is bad, the button board is bad, or the ballast/power board is bad.
You should remove the lamp & inspect it. It should be clear without bulging in the little bulb behind the lamp glass. I service LP530s all the time & something like that is usually the main board.
Good luck,

Apr 15, 2011 | InFocus LP530V Video Projector 2000 ANSI...

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Light does not come on, fan is working and green light at top keeps blinking off and on on a LP70 infocus projector

if you hear a high-pitched whir, the problem is either the ballast or the lamp. if you don't, it's the colorwheel. you could try to get the parts from an infocus service center or send it in to them for repair. either way, try av solutions in ny. they're really good.

Nov 22, 2009 | InFocus LP70+ Multimedia Projector

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I have infocus lp70 model projector. i replaced the bulb and now it won't light. i put back in the old bulb and the light still wont come on...any ideas? You can tell that the projector wants to run and is...

if you don't hear a high-pitched whir, your colorwheel needs replacing. you can remove the lamp and see the colorwheel inside (colored glass wheel). if you turn it on without the lamp, the colorwheel should still spin. if it does, you have a ballast problem. if not, the colorwheel. you'd still need to send it in to an infocus authorized service center. try av solutions in ny. they're pretty good.

Oct 22, 2009 | InFocus LP70+ Multimedia Projector

1 Answer

Wont light up

the colorwheel needs replacing. if the colorwheel won't spin, the lamp won't light. if you hear a high-pitched whir, the colorwheel works, which means there is a power supply issue. there is a fix for that, but you have to be good at soldering. if you are give it a try:

Oct 05, 2009 | InFocus LP70+ Multimedia Projector

1 Answer


I had exactly this problem. After plugging and unplugging it multiple times over several weeks (even plugging it in quickly after it was unplugged but with the green light still flashing as suggested here) all to no avail, it just started working on its own one day. It worked for a few weeks and then the problem re-appeared.

InFocus tech support recommended:
1. Check whether the lamp door is securely closed.
2. Check the color of the LED and the number of time it blinks. (For me, a very fast almost flickering flash)
3. Does the fan operate? (My fan would go on when plugged in)
4. Remove the lamp module, shake it gently and reseat the lamp module.

For me, these steps did not work. InFocus then recommended that I send it to ProjectorDoctor, and it was diagnosed with a bad power supply. $395, but it is fully functional again. Good luck.........

Jul 24, 2008 | InFocus ScreenPlay 7200 Multimedia...

1 Answer

Unit will not power on

Company said it was defective. Sent back for exchange.

May 30, 2008 | ViewSonic PJ501 Multimedia Projector

1 Answer

Pile of ##@!#@ infocus lp70 green light wont come on. should i smash it??

if the fans aren't running, it's the power supply. if the amber is on and the button's won't turn it on, there is an obstruction under the button panel. if all turns on but the lamp and you don't hear a high=pitched whir, it's the colorwheel. if you do, it's the ballast.

Dec 20, 2007 | InFocus LP70+ Multimedia Projector

1 Answer

Inforocus lp70 green light not comming on or is eney thing?

Found a broken lead on the back side of the AC connector to the board. Resoldered a piece of copper wire, working perfectly again.

Dec 17, 2007 | InFocus LP70+ Multimedia Projector

4 Answers

Lp70 projector Error message about Fans

I had a similar problem with an LP70. my fan was sticking.
So I opened bottom cover and pulled out fan cage, there are 2 fans.
you must know which fan not running.
If you found bad one remove paper label(yellow)
you can see 3 small holes.
using wd40 few drops to holes.
then manually turn using your finger cw and ccw few times
you can feel smooth turning now.
then relabeling to hole side.
reassemble unit.
power on.
Now you can enjoy with your projector.

Jul 18, 2007 | InFocus LP70+ Multimedia Projector

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