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Infocus LP70+, powers up with green led, fan is running, Red LED flashing twice, delay, flashes twice...repeats

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Posted on Jan 02, 2017

projdoc
  • 2236 Answers

SOURCE: Infocus X1a no picture, solid green LED

if the lamp is new, it could be the power supply (the ballast is built in to the ps). but make sure you have the right lamp. the X1 and X1a have an sp-lamp-019 and the similar X2 and X3 have an sp-lamp-018. the lamps are almost identical except for the wire configuration on the lamp plug. make sure the wires in the plug match the positions in the socket. also, when you turn it on, if you don't hear a high pitch squeal, the colorwheel is not working. and if that isn't working, the lamp won't either. also check to see if the lamp door is closing properly and hitting the switch at the top of the opening.

Posted on Jul 15, 2009

  • 22 Answers

SOURCE: infocus screenplay 7200 fan failure with new lamp

Not sure if this helps with the 7200 bu had a 4805 with a failed fan issue. There are two fans inthe unit, one smaller one that cools the color (colour) wheel and the larger one that cools the lamp. This unit had a problem with the larger lamp fan not turning. Unplugged and disassembled the unit to get the fan out and tested the fan using a 9v battery and a couple of wires (best to uplug the fan from the controller board so you are not forcing voltage into the unpowered controller board... that said, I did it hooked up just peeling back the label in the centre of the fan and touching the wires to the solder contacts) The fan worked fine so figured the controller board was the issue, so this wasn't going to be a simple "buy a new fan" issue.

Here is where your mileage may vary...

I decided that it would be OK to just run the fan. Unplugged the fan and powered it from the 9V battery and assembled the unit and powered it up. Found that there was 7v available on the power board at the second pin that was alwasy on when the power switch was on (thats the positive 7 V pin, but measure it with a meter since we are talking about a different projector) and just wired the fan direct to pin 1 and 2 (1 is ground on the 4805, 2 is +7V) and so now whenever the main power is on the fan runs, so after ti cools down I just power off the main power when not in use... or let the fan run if the noise isn't an issue. Crude but effective fix.

Posted on Dec 08, 2009

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I am trying to unlock the region code for Sony BDP-S5100 with the URC7740. The hack program refers to "press and hold the &#147 key. Where or what is "&#"?


I would have to guess, that is probably not the correct remote. I feel I must inform you, trying to upgrade your firmware, from an unsavory hacker, can turn your unit into a brick(doorstop). IMO, proceed with caution.

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Infocus 4805, wont power up remotely


the lamp has burned ot and needs replaced,

Nov 25, 2007 | InFocus ScreenPlay 4805 Multimedia...

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I have a Braemar LCB450-G evaporative cooler. There are two Diagnostic LED,s on the electrinics module,one red & one green. When the power is turned on at the module the red LED remains on & the...


There are several possibilities, the drain valve is opening and closing, this causes water to fill the base, the float valve will not achieve the desired level so the fan will not start. This could be the drain valve actuator is U/S or the PC board. Have you tried to turn the main power off at the switch board for 1/2 hour?
Most occasions the service person will swap out all the units as they purchase it as a package. It is not cheap to replace these units.

Nov 22, 2010 | Heating & Cooling

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My infocus PL70+ powers up but there's no picture. after I plug in, the amber light come on so I hit the power button, green LED light flashes, fan kicks in, green LED remains steady after flashing for a...


if you hear chirping or a loud buzzing, you have a bad colorwheel. the lamp won't turn on if the colorwheel doesn't spin as fast as it needs to. if you don't hear anything like that, you need a new power supply. the lamp striking takes a lot of power, and if the power supply can't handle it, it shuts off. you can get the part from an infocus service center and replace it yourself, or send it to them for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com

Jan 12, 2010 | InFocus LP70+ Multimedia Projector

1 Answer

New bulb worked for a short trail run now wont light up. flashing green led colour wheel is turning on start up


when you changed the lamp, did you blow the dust out of the projector? if the screen on the side of the lamp is blocked (i.e. with dust), the lamp will blow quickly. if the projector were to overheat, by the fans not running or blocked vents, everything would shut down and the led would blink red.

Jan 01, 2010 | InFocus ScreenPlay 4805 Multimedia...

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: http://www.infocus.com/service/asc/communications/tech_notes/2006/09/tn495g.pdf

Oct 05, 2009 | InFocus LP70+ Multimedia Projector

2 Answers

InFocus LP120 Powercycles/Shuts Off/Does Not Stay On


what is the led doing? what coloris it? and if it is blinking, how many times? this will tell you the problem.

green (flashing and solid)- all is well
red flashing:
1 time- lamp won't strike after 5x
2 times- lamp has over 2000 hrs. replace lamp
3 times- lamp failure. replace lamp
4 times- fan not working.
5 times- projector running too hot. needs cooldown
red led lit solid- undiagnosed issue. send in for repair.

if your projector is under 2 years old, it's under warranty, but it seems unlikely.

Aug 10, 2009 | InFocus LP120 / 1000 Lumens / XGA / DLP...

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LG LCD TV Standby Light Flashing Red Continuously


I have had this same problem twice in the past 3 months. So far both times I've been able to get it back after a week or two. I'm not sure what works, but unplugging and detaching the antenna and cable and waiting a few days seems to be the key. In both instances, I unplugged it for a few days then plugged it in for a few days and repeated the processes until I eventually got the steady red led. Both times prior to the red led the led would flash red then green and make a clickiing noise for several hours before I was able to get it working again.

Apr 14, 2008 | LG 26LX1D 26 in. LCD HDTV

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