Question about InFocus ScreenPlay 4805 Multimedia Projector

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I have an infocus 4805 and the lamp won't come on. It worked the last time we used it

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  • Anonymous Jan 31, 2009

    same prob. fan turns, backlight can toggle green/orange, but no light. what gives?

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The lamp has probably failed. your description of events is a very common way a lamp failure presents.

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...

    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 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

    Infocus 4805 Lamp will not ignite after new bulb and reset.


    it there is no high-pitched squeal when it starts up, the colorwheel needs replacing. the lamp won't light without it. the part is under $50, but installation is quite involved.

    Apr 16, 2009 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    Lamp on my infocus 4805 keeps blowing. This is the 3rd one.


    don't forget to clean your pj all 250 hours of utilisation!!

    Mar 08, 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 blinking red light problem


    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.

    Oct 27, 2008 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    Infocus sreenplay projector


    Contact the manufacturer for a firm ware upgrade. My two brother in laws/sisters own this same pj and had the same issues you are talking about. Once they installed the update [aka: firmware upgrade]it created a solution to the problem.

    Let me know how it goes. They can either mail you a CD, direct you to where on their website, otherwise email you the update to download. You have to connect your pj as well.

    Let me know how that goes. I'm fairly confident that will fix it. There was a certain time frame [manufacturer dates], and serial numbers that had these issues.

    Oct 02, 2008 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    ---------->> My Infocus Screen Play 4805 -Popped*


    Hello David,
    The best way to find the best price is to do some hunting/research. Google "infocus 4805 lamp"
    and wade through to find the best price.
    You will find instructions on the lamp replacement procedure in the manual. If you dont have the user manual browse to www.projectorcentral.com and search infocus 4805 and on their spcifications page there is a "user manual" Acrobat PDF icon.
    click on the icon to open the manual in pdf format

    Take Care!

    Jun 17, 2008 | InFocus ScreenPlay 4805 Multimedia...

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