Question about InFocus ScreenPlay 4805 Multimedia Projector

4 Answers

Help..... Left half of screen dark.. Can still see image through darkness a little.. wont let me change most settings now. Lamp is under 300 hours. I do know how to change components and solder if its something on the board. took it apart and tried to test voltage levels on parts of the board and accidently blew a fuse but took care of that. Actually more than half the screen now. happened overnight, not a gradual problem.

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  • Anonymous Jan 26, 2008

    Same problem, Bulb blew up after only 650 hrs ....INFOCUS SUCKS !!!!!!!!!!

  • ravinders Jan 27, 2008


    • Hi Steveoh's, I am having the same problem, left half of the screen has gone black. I would be interested to know if you eventually resolved the similar problem you were having. Thanks.

  • theOctagon Feb 26, 2008

    Same problem here, and yes PLEASE inform as to where to purchase these parts.

  • bluemundo May 13, 2009

    shadow on right side of screen. still can see dim image there. everything else is ok.

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  • 16 Answers

Hi there.

This is definetly the light tunnel issue. After searching and a million phonecalls, I tracked down a place that you can buy the light tunel for $41 on their own and simply put that in, making the projector good as new.
I Have the phone number of the place and also the link to the forum giving you fully pictured diagrams of how to change the light tunnel, and also I have a service manual if anyone would like it to be sent to them.

Cheers
Russ

Posted on Feb 11, 2008

  • ihabinski
    ihabinski Mar 28, 2012

    Hi Russ,
    I'm very much interested in finding a source for replacement light tunnels. Could you post the info on this? aTdHvAaNnKcSe - Ian - Ottawa Canada

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  • 167 Answers

Buy a new lamp immediately!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Posted on Jan 26, 2008

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Light tunnel

Posted on Feb 02, 2008

Please read other posts concerning this problem. It's the light tunnel that's the problem and certainly not the lamp.

Posted on Feb 01, 2008

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Posted on Jan 02, 2017

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Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site: -
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Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
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