Question about InFocus ScreenPlay 4805 Multimedia Projector

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I have a InFocus 4805. Half the picture is darker

I have a InFocus 4805. Half the picture is darker that the other half with a distict line separating where part of the picture is fine and the other half is very dark. You can sill make out images on the dark half though.

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Your light tunnel may have collapsed. This is made up of 4 tiny rectangular mirrors glued together to make a tunnel.

Posted on Sep 27, 2009

  • Sam Abeywardene Sep 27, 2009

    I reglued the the mirrors but it soon came apart due to the heat in the projector. Also, the mirroring tends to burn off with the heat.



    I found a better solution.....Get a length of square brass tubing from your hobby shop and cut it to size. Works fine in my SP4805. The brightness needs to be increased to 55 in order to compensate for the lack of mirror finish on the inside.

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1 Answer

Half of the screen is dark. Tried a new bulb wilth no effect


Sounds like Light Tunnel Failure. Very common. Biggest problem is that a replacement part is almost non-existent and a manufacturer repair is expensive.
You can get further details on the problem at www.avsforum.com. Just search for "4805 Light Tunnel" and you will find threads about DIY repairs.
I also recently posted a DIY Replacement thread for anyone willing to make their own tunnel:
www.avsforum.com/avs-vb/showthread.php?t=1304694

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

1 Answer

I have a line down the right side of my screen, it still projects but the line and it is darker on that side of the screen; what can cause this?


The light tunnel is either out of adjustment or collasped. Given the age of your projector I would say it is the latter. This will have to be repaired by a tech or you may be able to fix if you can get the part and a service manual.

Nov 14, 2010 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Infocus 4805 has yellow line on the right side of the screen


It will be the light tunnel. Apparently it is very common in the 4805. See here for how to fix it, by the way you cant get parts so its a DIY job.
http://www.avsforum.com/avs-vb/showthread.php?p=6744737#post6744737

Feb 21, 2010 | InFocus ScreenPlay 4805 Multimedia...

2 Answers

It has a shadow on half the screen


the light tunnel has collapsed. you can get the part from an infocus service center and do it yourself or send it to one for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com

Jan 18, 2010 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

I have a very dark vertical shadow over half the screen. Rest is fine. Settings fine bulb hours only 609


the light tunnel is collapsing and needs to be replaced. you can get the part from an infocus service center or send it in to them for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com

Dec 20, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Dark side of screen


the light tunnel has collapsed and needs replacing. the part is inexpensive and relatively easy to replace. if you can get the part from infocus or an authorized service center (part # 306-0095-01), remove the top (4 brass screws and 4 silver screws on the bottom, 2-3 silver screws on the back), next to the lens is the colorwheel. remove the 2 black screws on the colorwheel base, 2 black screws on the metal tunnel frame side, remove the tunnel glass. replace, and reverse the instructions to put it back together.

Aug 15, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

I have an InFocus ScreenPlay 4805. it only shows part of the picture. the rest of the screen have lines and is fuzzy. thanks herman


One possibility is that the Mirror behind the lense is dirty but I think that this also may be the light tunnel issue that I explained in a couple of other posts about the SP4805.

Mar 17, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

InFocus 4805 lost red


Yes Geoff, What has happened is one of the two red glass filters on the color wheel has separated and flew off which was the snap you heard. So white light is in half of all parts of the spectrum that require any red.

There should also be a vibration now that can be felt on the projector and possibly heard as well.
I suggest not running it again until this is repaired as more damage could result. If you have the skills and the part that flew off isn't destroyed it can be carefully glued back in place and problem solved. I have seen quite a few of these glass filter segments survive this.

Good Luck!

SagerTronics

Nov 16, 2008 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Infocus screenplay 4805 not communicating with PS3 console.


Try pressing the "auto image" button on the projector itself. This sometimes solves these types of problems.

Nov 15, 2008 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Samsung LCD television screen fault


My new TV LCD Samsung LC32C530 Series 5 has one half darker and with less contrast than the other.This is noticeable now always. There is a distinct and clear division down exactly half the display which separates the dark and light sides.. Any ideas?Thank you.

Jul 08, 2008 | Televison & Video

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