Tip & How-To about InFocus ScreenPlay 4805 Multimedia Projector

Infocus 4805 Light Tunnel DIY Replacement Option

About a year ago my light tunnel failed and I was able to fix it thanks to info on the net. Then about a month ago I decided to try to finally replace my Light Tunnel. Mainly because replacement parts are discontinued and manufacturer repair is way too expensive. In the process of failing, I was able to find a great low cost solution that's pretty easy to fabricate. My post is here:

www.avsforum.com/avs-vb/showthread.php?t=1304694

If you have never opened your Projector go here:
http://www.avsforum.com/avs-vb/showthread.php?t=556431
It's regarding Dust Blobs, but it has pics to show how to disassemble the unit.


So as for the Tunnel and getting to it...here is a thread for a different model PJ, but the layout is very similar:
http://www.avsforum.com/avs-vb/showthread.php?t=618877

Hope this post is helpful to you :)

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I have a ikonvert Sc-56 that was purchased the first of the year 2014 and just up and quit working about 1 month ago. Tried to replace it at the place I bought it, but they said they would only replac


No help we can give you take it to a repair shop for an estimate of cost to fix . weight against cost of a new unit , then decide what you can do .

Sep 07, 2017 | Video Cameras

1 Answer

I have a 5 year old RCA 61LPW42 HD DLP television. A few months ago a small dark shadow appeared in the upper left corner of the screen. Over time it has creeped down and become larger. Still starting from the upper left corner. What could it be? Can it be fixed?


It's the light tunnel. The tunnel is a square tube made up of 4 mirrors glued together.

It looks like this from the side: |_| (with a piece on top too.)
When the glue breaks down, it shifts inside the little mirror holder. The shifted mirrors looks like this /_/ what you are seeing is the shadow of the tilted mirror tunnel.
ON the RCA's there's not a good fix.

RCA's response:
"Ok, well sadly they do not offer the light tunnel anymore, which is what you need. Sadly you would be rendered to get a whole new light engine assembly. That would be the D.N.D module, light tunnel,color wheel,optic spanner, and oci. mirror. Your best bet would be to search ebay for a broken engine and replace it that ways."

That is the ONLY response I got from them.

I took the set apart and found the 4 tiny mirrors. I will be attempting to epoxy them together. (The set is dead anyway, why not try?)

Apr 04, 2009 | RCA HD61LPW42 61" Rear Projection HDTV

4 Answers

Infocus X2 shadow on right side


You are describing a light tunnel failure. Unfortunately, Infocus has decided to discontinue any parts for the X series. Your only recourse is to repair the tunnel with superglue. Or buy a new projector. If you do attempt repair, note that the corners do not line up, rather the sides are offset slightly.

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

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