Question about InFocus ScreenPlay 4805 Multimedia Projector

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Shadow image acrooss screen

Shadow appears across screen, from left to right.All but the right side of screen has shadow. lamp was replaced approx. 200 hours of run time.

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Re: shadow image acrooss screen - InFocus ScreenPlay 4805 Multimedia Projector Multimedia Projectors


Posted on Jan 23, 2008

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1 Answer

A red shadow along side images

It sounds like the lamp or light guide didn't get back in the exact original position...

Dec 08, 2013 | Sanyo PLC XW20A Multimedia Projector

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New lamp, half screen is bright the other half is much darker


Correct, if you know how to, try re-connecting the lamp.

Keep us posted and thank you for using our service.
FixYa for all your troubleshooting needs.

Jul 12, 2008 | BenQ MP610 Multimedia Projector

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Shadow on image

Usually, this is just caused by dust inside the optical block. It can usually be remedied my removing the lamp, and just blowing out the unit with an air compressor. Canned air won't do the job.

Apr 29, 2013 | Multimedia Projectors

1 Answer

Left hand side of image appears darker than rest of image as if a shadow is caused from somewhere. Unsure if this is a lamp problem or a camera problem

If it looks like a dark orange/brown band, its likely to be a Light Tunnel Failure. The Tunnel can be fixed thru the manufacturer, but it will cost plenty. You can also do it yourself.
For additional info, go to and search for "4805 Light Tunnel" and you will see threads about the well as DIY repairs.
I also posted a DIY replacement option since new Tunnels are virtually non-existent:

Dec 24, 2010 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Slight shadow on right side of screen

this is image banding. the light tunnel needs to be adjusted, or replaced if it is collasped.

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

1 Answer

Discolored image and lines...

I also am having the same problem. at first it only showed up after the projector was on for about 15 minutes. Now I get a purple vertical bar on the right of the screen. I also get vertical green bars spread across the screen.
Does anyone have a diagram of how this machine is assembled?

Dec 17, 2007 | ASK Proxima DP6860 Plus Multimedia...

2 Answers

Shadow on right side of screen

check the connector of DMD module. Service all projector and reinstall.

Nov 18, 2007 | InFocus ScreenPlay 4805 Multimedia...

4 Answers

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.

Mar 30, 2007 | InFocus ScreenPlay 4805 Multimedia...

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