Question about Dwin TransVision 3 Plus Multimedia Projector

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Dwin Trans 3 Shadowing at Edge

3 yr old projector with shadowing at edges angulated on left edge and bottom.  I thought this was related to a mirror tunnel problem but have found no information to solve or test it.  Finally now my bulb has probably failed.  Are parts easily found to repair this projector or am I looking at a projector replacement, since the company is out of business?

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You'd need to remove the top from the projector. the light tunnel is between the colorwheel and the lens assembly. remove the metal frame from it. chances are it's falling apart. since the company's out of business, finding a part is an exercise in futility. time to trade up.

Posted on Aug 19, 2009

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We have an LP600 with a black fizzy edge slowly sliding into the image field from the left picture edge?


sounds like you have a broken light tunnel. Its just a four sided mirror that has a broken side.

Mar 10, 2010 | InFocus LP70+ Multimedia Projector

2 Answers

Not showing entire image on screen


It's possible that your projector doesn't natively support your display resolution, but to know more it would be best if you could provide the following details:

Projector Model
PC Model
Windows Version
Windows Resolution/Refresh Rate
Display type (if laptop) cloned/extended, etc

Thanks!

Feb 18, 2008 | Sharp XR-10X Multimedia Projector

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Mirror or light tunnel collapsing


A weakness that you might experience with your projector is the collapsing of the light or mirror tunnel. Not sure if this is common to DLP projectors only. The symptom is that you see grey bands or shadows on the edge of the TV image - this is caused by a mirror getting in the way of the bulb light. The glue holding the mirrors together seems to weaken over time (3000 lamp hours in my case) and causes one or more of the mirrors to loose its position. For solution, search for "mirror tunnel" or "light tunnel" under all projectors. The problem seems to be quite widespread. I managed to fix my LG's.

I wonder why the manufacturers don't use a rectangular glass tube that is mirror plated on the long sides ?!?! Suppose they want to sell new projectors after lamp or mirror tunnel expiry!

on Sep 15, 2008 | LG RD-JT91 Multimedia Projector

1 Answer

I have shadowing on the edges when in wide-screen. When in normal screen the image is fine. How do I get rid of the shadow? Also, is there a way to clean the mirror inside the unit?


the only way to properly and safely clean anything inside is with canned air. as for the shadow, replace the light tunnel. you can get the part from an infocus service center and replace it yourself, or send it in for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com

Dec 25, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Shadowing on lower right of screen on InFocus LP70+


the light tunnel (like a square tube of mirrors) is collapsing. it needs to be replaced, but it's a bit involved, so and infocus service center would be your best bet. if you wish to try it yourself, let me know.

Jul 14, 2009 | InFocus LP70+ Multimedia Projector

1 Answer

Image blurry at edges


my dear friend, it appears that you must have opened the 3 lcd screws that are not supposed to be touched, if so then just forget reassembling the same as the convergence would be lost & cannot be manually done
another thing are the polarisers.if excessive dust had accumulated & if you used wrong technique in cleaning then the coating would have come off & you have lost everything , just change the entire lcd block.this costs a bomb.beter to buy a new projector

Jan 05, 2009 | Panasonic PT-AE900U Multimedia Projector

1 Answer

Infocus image problem


That is caused by a collapsing light pipe.
This is a mirrored glass square component that is located directly behind the color wheel. It is comprised of 4 mirrored section approximately 40mm x 8mm that are glued together with a hi-temp adhesive to form a square. The artifact you see is one of these mirrored glass section's has come unglued and has moved inwards blocking one edge of the image. The edge of this shadow is not shar because this failure is not at a focal point.WHEW..all that being said it's possible to re-glue it if you are electro-mechanically savvy and have steady hands. If you need to take it to a service they will most likely just just replace the complete DLP engine (the whole optic assembly) Hold on to your wallet!!


Cheers

Nov 06, 2008 | InFocus LP120 / 1000 Lumens / XGA / DLP...

2 Answers

InFocus LP70 Won't display Top 3/4 of screen even with new bulb


if the colorwheel stopped spinning, the projector would shut off. take the lamp out and spin the colorwheel (with a pencil eraser) to the clear section and look at the square on the other side. if it's not a complete square or something is inside the square, your light tunnel is collapsing and needs replacement (also called an integrator rod).

Jul 08, 2008 | InFocus LP70+ Multimedia Projector

3 Answers

Infocus 70+


We have had similar issue w/ multiple LP70+ projectors. The units get to be 1-2 years old and suddenly the right vertical edge of the display is distorted. There is usually a shadowed vertical bar that clouds about 3-5% of the horizontal space from the right edge.
What's the cause?

Nov 13, 2007 | InFocus LP70+ Multimedia Projector

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