Question about InFocus ScreenPlay 4805 Multimedia Projector

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4805 w/less than 300-400 hours has blinking red light

I went to turn on my projector tonight....it never projected.  It tried to get going a few times, then I got a blinking red light.  I don't think it's the bulb - I think it has less than 300 hours on it - maybe 400 at the most.  I pulled the bulb and it looks fine as well!  After the projector's final attempt to start, I hear an intermittent wind-down sound.
This is really aggravating on a unit with so little use that I bought new...anyway - any ideas?

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  • 6 more comments 
  • Adamesq Jul 16, 2008

    Thank you for the quick reply!  It is a single blink.  The sound seems to be more of a crying sound.  Strange.

  • Adamesq Jul 16, 2008

    Here's video of the cry-baby!


  • Adamesq Jul 16, 2008

    Thank you, BB64.

  • bob7864 Sep 07, 2008

    I have the same problem as described. I took the machine apart and noticed the fan (looking from the front) on the left was trying to start bout would not move. When I manually tried to move the fan, it felt like it was sticking. I have an old PC, is it possible, if it fits, to replace the fan with one from the PC?

  • rickdal3 Oct 24, 2008

    I went to turn the projector on and I get only a blinking red light. I thought it was the bulb. I bought a new bulb and changed it. Still I have the same problem. The color wheel spins on and off, but the bulb does not turn on. Also, the red blinking light keeps going. I don't know what else to do.

  • gunndoctor Jan 05, 2009

    i have the same problem on an infocus dlp 500 red light blinking and no picture less than 500 hours on a new lamp

  • mecherd May 20, 2009

    I also have a 4805 with only about 400 hours. The lamp will not work, and I also get a single blinking red light.

  • Tim Babcock
    Tim Babcock May 11, 2010

    Here is the support section to your projector



    How many blinks do you have on the red led display?

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  • 2,794 Answers

Yikes. I bet the bearing is bad in the fan and/or the fan is rubbing up against something. It might be an fix.

Posted on Jul 16, 2008

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Projector turns off after 3 minutes, lamp needs replacement?


Try reseting the filters for the lamp and also clean the air/dust filters.

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InFocus ScreenPlay 4805 no projection. Unit powers on and green light blinks, but no light and no fan, eventually red light blinks continuously about 2 seconds between blinks. When the green light is...


the high-pitched sound is the colorwheel trying to spin up to speed. that may need to be replaced. check the inside of the lamp for bulges, black spots, fogging or flaking. if it has any of those, replace the lamp. you can get parts from an infocus service center or send it to them for repair. either way, try www.avsolutionsny.com they're really good. if you want to replace it yourself, there is a detailed step-by-step on my "tips" area. it's the same as the infocus x1, x2, x3 and sp4805. click on my picture and scroll down to tips. good luck!

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if the led flashes once in 2-second intervals and you don't hear a high-pitched whir, the colorwheel needs replacing. if you do, the ballast is bad. if it flashes 2 times, the lamp is past 3000 hours. 4 times, fan error. 5 times, temp too high and it needs to cool.

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Try resetting the projector by pressing and hold the two Keystone buttons, then turn ON projector. Hold down the two Keystone buttons for 15 seconds, then turn OFF projector.
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In the manual there is a chart which will indicate the nature of the failure depending on the number of times the red led flashes before a pause.

Most common is the projector's lamp timer has exceeded the operational lamp time limit.

While the projector's red led is flashing, press the volume up and down buttons on the projector simultaneously and hold them both in for 10 seconds.
This will reset the lamp inhibit protocol.

However if the lamp has thousands of hours of use you need to replace it before it actually fails.

Feb 28, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

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After a few minuets does the green blinking light turn to a red blinking light?

If so the problem is the lamp did not strike.Either the lamp has failed (most likely) or there is a problem with the power supply (less likely)

Feb 12, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

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My first questions is:

Is this the first lamp you have placed into your Infocus pj? If not, did you reset the hours when you did it last time? Otherwise that can also confuse the projectors internal system thinking there is NOT a new lamp in there and there for make it stop working once the clock hours are expired and over the 3000-6000 suggested hour life.

Let me know so I can help trouble shoot other possible problems.

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There is a cooling off period that your projector will do in order to make sure it does not implode or improperly destroy your lamp. It is very fragile and each time you turn on your projector it lights up almost like you would light up a candle. Each igniting of the lamp creates a decrease average of 3 hours per turning it on/ff.

also, have you tried another lamp and reset the hours, or cleaned out the filter at all?

Let me know how things go for you. I wish you well and hope that helps fixes the problem.

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Infocus projector won't turn on


From the infocus_lp650 manual
Table 2:
Red LED Behavior Explanation
One (1) blink The lamp won't strike after five (5)
attempts. Check the lamp and lamp door
installations for loose connections.
Two (2) blinks The lamp counter hours have exceeded
lamp life hours. Replace the lamp and
reset the lamp hours counter.
Optional Accessories Part Number
Three (3) blinks The projector has shut down the lamp.
Replace the lamp. Contact Technical Support
for repair if replacing the lamp does
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Four (4) blinks The fan has failed. Replace the lamp (the
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Five (5) blinks The projector is overheating. Check for a
blocked air vent. Contact Technical Support
for repair if clearing the air vents
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