Question about InFocus ScreenPlay 4805 Multimedia Projector

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1/2 the screen is viewable

Only half of the image is viewable on my screen. the right side of the screen is dark

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Re: 1/2 the screen is viewable

You would be wrong. Lamps do not do that. They either work or they don't, they do not cast shadows or give half an image.

What is going on is the light tunnel has failed. It is a small, 4-sided mirrored tunnel that focuses the light into the optical chamber. It is directly behind the color wheel. I've seen this probelm dozens of times.

Posted on Feb 28, 2008

Re: 1/2 the screen is viewable

I had the same problem and discovered it was the mirror tunnel. located after the colour wheel. one of the mirrors had come loose and eventually touched the other side. this was the problem on mine. it could be worth a check.

Posted on Jun 26, 2007

Re: 1/2 the screen is viewable

I had the same problem. I removed the lamp housing and cleaned all the vents and it improved. Now only about 3 inches on the right side of the screen appear to have a shadow cast on them. I've submitted a query to InFocus and hope to get a reply. I'm betting its a lamp problem.

Posted on May 26, 2007

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Re: 1/2 the screen is viewable

I just started getting the same problem, seemingly out of nowhere. Have you figured out a solution, or even just the cause? - Thanks.

Posted on Apr 15, 2007

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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.


Jun 10, 2007 | InFocus ScreenPlay 4805 Multimedia...

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