Question about InFocus ScreenPlay 4805 Multimedia Projector

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Doesn't power on

My 4805 doesn't act like any power is getting to it at all. It doesn't have any lamp housing yet. Is the lamp housing required for it to power on?
Thanks!!

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No it doesn't need a lamp housing to power on but the lamp housing cover needs to be in place as it pushes in a safety switch that allows the projector to power on.

Posted on Nov 29, 2009

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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

    Replaced lamp housing(bulb). Now having trouble


    replace the colorwheel. if the colorwheel doesn't spin or spin properly, the lamp won't light. if the colorwheel is ok, you have a ballast problem.

    Dec 30, 2009 | InFocus ScreenPlay 4805 Multimedia...

    2 Answers

    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

    My color wheel mirror lens came off ... i have them .. it seams they were glued in .. is it possible just to reglue & put back together ?? thank you .. this is for the infocus 4805 mod !!


    if you do (and it's not highly recomended), the glue must not be flamable, must be used in intense heat, and must be able to adhear to glass and metal. but in order to remove it, you have to remove the top, front, back, both power boards, the metal plate, and the lamp housing/fan assembly just to unplug it. but you can get a new colorwheel for about $50 if you put it in yourself..

    Sep 21, 2009 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    My Infocus DLP 4805 can't turn on


    very possible the lamp is bad. Many projectors will not even power on once the lamp burns out. As for the strange noise, there may be something more serious wrong with it.

    Jun 22, 2009 | InFocus ScreenPlay 4805 Multimedia...

    2 Answers

    No Power


    check fuse, check to see if fan is clean, check to insure lamp and houseing is completely seated

    Feb 21, 2008 | InFocus ScreenPlay 4805 Multimedia...

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