Question about InFocus ScreenPlay 4805 Multimedia Projector

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

My lamp blew out on my 4805. I bought a new one put it in and it lasted one day then blew out again. Replaced the lamp again. after one week it blew. It sounds like the fans are working so I cannot understand what is causing the lamps to go so quickly. I have cleaned out the filter and surrounding areas.

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

Posted on Mar 11, 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

    Lost color on infocus 4805 what needs to be done to repair this I just bought a new lamp then the color went


    your color wheel needs to be replaced. i have the procedure listed in another of my solutions. this is a major repair for the inexperienced

    Jul 03, 2010 | InFocus ScreenPlay 4805 Multimedia...

    1 Answer

    When unit was turned off last night it "popped". Now it does not come on and the power light flashes at a rate of 1 flasher per second.


    the lamp blew. take it out and see if there is shattered glass inside. if there is, replace the lamp and blow the dust out of the projector. the dust keeps in the heat that the projector is trying to expel. the lamp probably overheated and shattered. otherwise, it was at the end of it's life (usually 3000 hours).

    Jan 04, 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...

    2 Answers

    The lamps keeps on blowing only had it 3 years from new ,the last lamp that blew the red light flashes 3 times and on the other lamp flashes once. thanks brian


    This is because you have a bad lamp balast you need to change the balast as that is proving incorrect current to the lamp due toa faulty sensor on the balast.


    I hope this information helps you please leave positve feedback and ratings for your free answer today.

    Oct 24, 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

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


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

    Jan 23, 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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