Question about InFocus ScreenPlay 4805 Multimedia Projector

3 Answers

Infocus sp-4805 i turn on my projector it boots up fine. i start watchin a movie it shut's off after shortly after and i was woundering if is the fan becouse it make a wizin nosie from it

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  • shaggs Feb 10, 2008

    it was the fan, i turned it on and it moved a few centermeters thats it so i removed the fan and tested it and it worked fine so i have a problem from the broad to the fan.. thanks for help

  • curry1974 Nov 15, 2008

    just installed my second bulb from the manufacturer. It'll start, run for awhile and then shut down the bulb with red light blinking 3 times. Toggle switch off for a minute and restart, and it will start and light the lamp but will shut down again. Sounds like the fan is running but wondering if there are two fans in this unit. Anyone know?

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What I have just finished doing with my x2, because it was the controller board not giving enough voltage to the fan. I used my kiwi initiative and hard wired an old nokia cellphone charger transformer inside the projector and connected to the 240V inlet from the underside of the power supply board, this worked brilliantly and supplies the fan with the power, the only dis advantage is that the fan will keep spinning as long as the projector is plugged in (could be easily fixed with a switch), but the way I see it it's better for me because it cools the bulb down a lot longer. Saved me from buying a new projector Lol, if you would like I can send a pic of what I have done?

Posted on Feb 11, 2008

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Most likely it's overheating. And the most common cause of overheating is the fan. I would suggest you open the case and find the fan, and clean it out - most likely it will just require giving it a good shot of canned air (which you can buy at any electronics or hardware store). With luck, it may just be jamming on or be impeded by a buildup of dust.

If that doesn't help the problem, and you find the fan doesn't seem to be turning, let me know and I'll try to find information on ordering a replacement.

-John

Posted on Feb 07, 2008

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I have the same problem. I've verified that both fans are turning, but it seems it's not enough to cool the projector, which shuts off (thermal switch next to the lamp housing cuts off) after only a few minutes. I'm working on a fix to mount an additional external fan that can "****" air out of the front grill.

Posted on Dec 28, 2010

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My Infocus 4805 is just showing the INFOCUS logo and not showing the picture from the TV. all connections are correct but no signal....help


Powering On
  • If your InFocus 4805 projector is having a hard time powering on or doesn't power on at all, it could be one of two things. Due to the extreme temperature of the lamp that causes the temperature of the projector to rise, every InFocus 4805 projector has a cooling system. Check your projector's cooling solution, as it may need to be replaced. Also check the projector's fan---if the fan doesn't spin, the unit will not turn on. If the problem is the fan, you'll have to get it replaced. You can do this at the same place you bought your projector.
  • The Lamp
  • If your InFocus 4805 Projector powers on but does not project any light, the lamp will need to be replaced. All projector lamps must be replaced at some point---how often usually depends on how much use the device gets. Simply order a replacement lamp, unscrew the old one and screw the new one in. The projector will then work like new.
  • Color Wheel
  • If your InFocus 4805 projector powers on and is displaying images but the colors on the images appear warped or are not in the proper places, your "color wheel" will need to be replaced. The color wheel is a small device that essentially acts like a prism. Light is projected through it and it displays the appropriate colors on screen the way they appear in the original video source. Order a replacement color wheel that fits your model and use your instruction manual as a guide as you swap the old one out and put the new one in.
  • Aug 08, 2010 | InFocus ScreenPlay 4805 Multimedia...

    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...

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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 a infocus 4805 projector the bulb quit on me due to over heating i guess, any way it cracked and burnt out. I ordered a new bulb which i received and installed. I watched half a movie and had to...


    first thing's first- clean the dust out of the projector with canned air. excessive dust and heat are death to a projector. then check the colorwheel. if you don't hear a high-pitched whir or you hear a buzzing, the colorwheel needs to be replaced. the lamp won't strike without it. next check both fans. you may need to take the top off to do it. if both fans don't spin properly, it will overheat. many times the larger fan (lamp fan) will burn out or the circuit that starts it burns out. next, check the new lamp. does it have black spot, bulges, or fogging? if so, you'll need to replace it. if you do have to, don't get the cheapest one from "bob's lamps" online. you get what you pay for. if all that is ok, then you have a bad power supply. it's rare that this model has ps issues, but it's not unheard of. you could get the part(s) from an infocus service center, or send it in to them for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com

    Dec 20, 2009 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    Random and unusual fan noise


    give me a mail adress so i can send you. i have a website its turkish but guide is english i downloaded it
    waiting fo you

    May 29, 2009 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    My bulb went out on my infocus sp-4805. I bought a new bulb, and replaced it, and it worked...for five minutes. the picture went out, and it was overheated. I took some parts off, and sprayed can air in...


    The fan is probably on it's way out and cannot produce enough air flow to cool the lamp. Replace the fan with the same ratings as the original and it should work fine. The only other thing would be a problem with the power supply not supplying enough power to the fan, but, a bad fan is more likely.

    Feb 24, 2009 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    My Infocus 4805 suddenly blackout


    First check what is the lamp you using please use lamps recomended by SONY only. That lamps might run up to 2000 hours so.......try checking your lamps and let me know.

    Jan 26, 2009 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    Infocus 4805 problem


    Make sure that the lamp plug is properly plugged. 3 flashes indicate this or a faulty lamp.

    Dec 19, 2007 | InFocus ScreenPlay 4805 Multimedia...

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