Question about Compaq MP2800 Microportable Projector sps Projector Lamp
I have several Infocus X2 projectors. One has started to produce a dark blurred strip down the left hand side of the screen. (A similar effect can be produced by putting your finger close to the lens, blocking the edge of the picture. The inference is that something has come loose and is blocking the light path (Infocus told me that!) I have managed to take the whole projector to bits (and put it back again!). I have cleaned out everything with an air duster and can find nothing loose or stray. The picture is now very slightly better. I'm reluctant to take the chip mechanism apart. Any suggestions?
This error is to do with the light tube - 4 retangular mirror's just after the colour wheel. The dark band is where the bonding for the mirror's is failing, the spring clip holding the assembely inplace pushes the top mirror down slightly causing the dark band as mentioned.
To fix this use a high temp glass glue and very careful clean, reposition the mirror's (in the correct position). Allow to cure fully then re-assemble the unit.
I have only have had to do this twice the 1st time using a sub standard adhesive and dark return a few weeks later. The 2nd I did some reseach and have a quailty glass glue. The X2 has been fine for many years now with no sign of the band re showing.
hope that has helped you.?
ps. if you are rubbish at doing stuff like this - just don't try, it's fiddly and requires a good understand of what you are trying to achieve. A perfect retangular tube with parrallel sides...!!!
Posted on Apr 08, 2008
This is due to misalignment of the light tunnel which is basically a four faced mirror glued together try to replace this or get if glued back again to its original form or better yet buy a light tunnel assembly
Posted on Feb 09, 2009
I had this problem on a Benq MP721 so there may be several DLP projectors that use the same mirrored tube method of channeling light to the lens. When fixing the 4 mirrors, I used high heat silicone. Just clean the old glue off the mirror with a razor blade first and apply a blob of silicone in it's place. Silicone sticks well to glass but you will have to make sure the mirrors stay in place while it sets. While you have it apart, check the glue on all of the mirrors. Chances are the glue has dried and cracked and will eventually give you trouble.
Posted on Dec 10, 2008
"Is this a DLP or LCD"
If you don't know if the well known X2 is DLP or not you shouldn't suggest a solution.
Unless the X2 was exposed to extremely dirty conditions or was used constantly & daily for years, I don't believe the DLP chip could be contaminated. Although the optics (mirrors, wheels, & lenses) are not 100% sealed from dirt they are sealed better than in their older models... which seemed to collect dirt like a vacuum cleaner. The DLP chip housing is sealed. So unless the seal somehow blew a leak, I doubt if it's contaminated. If the DLP chip developed a defect though, it's not repairable.
Infocus won't sell you replacement parts, service data, or any repair tips at all.
Infocus offers more bang for the buck than others, & the ones I use (4, including 2-X2s), which I use for shows on the road, take a little banging around, temp. extremes, & dirty environments, & still function well, they offer no support whatsoever... other than tell you to send the unit in & pay them more than what it's worth just to have them "look at it". They'll offer you to trade it in on a new model too. They'll knock off only a few bucks on a trade in. If you buy a new model from them, they charge you twice as much as you can get a new one from Amazon, NewEgg, or TigerDirect, so trading it in to them is not an economical option.
Did you clean all the optics or just the lenses? Dirt is most likely to collect on the color wheel or nearby mirror (not the DLP chip). Also the siver surfacing on the mirror may darken or peel away along an edge from extreme wear & heat.
Also the bulb itself may warp with age causing it's beam to no longer be centered, or it's reflector will have it's silver peel away, causing a bright or dark spot along an edge, in a corner, or anywhere in the frame. If you see silver peeling away from the reflector or dark spots on it or on the bulb, replace it, & save the old one as an emergency back-up bulb (a worn bulb is better than no bulb.
But beware, bulbs that show a lot of wear are the ones most likely to explode someday... throwing very hot shards of glass into the projector & possibly through the air vents, & venting toxic mercury vapor into the air. So worn bulbs should be used for back-up only, & not for regular use.
Posted on Nov 15, 2007
Is this a DLP or LCD type?
Posted on Sep 30, 2007
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