Question about InFocus LP 600 Multimedia Projector

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Faded Black Strip on Side of Projection

The Left side of the screen is faded (see image) The faded portion is not straight up and down, the fade is wider at the bottom. The fade is present with and without sources plugged in. When the projector is mounted on the ceiling, the fade is on the other side. I called InFocus and they had me remove and shake the lamp a bit, and said it shouldn't be a lamp problem. Any ideas?

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Anonymous

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I had a similar problem with my InFocus LP600 although my black stripe was straight up and down. I am guessing this is caused when the unit is bumped or dropped. This is not an easy fix unless you have a lot of experience with small tools and parts and you may need an extra set of hands. I found some tiny alignment screws under the lamp cover and hidden beneath a peel-off 0.5" x 2" black plastic strip. The screws are located between the bulb assembly and the main projection lens and are oriented 90 degrees apart around the light projection path. The trick is in getting the projector to temporarily function with the lamp cover off -- it has an interlock tab on one edge that pushes on a microswitch when closed. We turned the projector upside down but raised on some slats for heat dissipation, gently held the interlock switch in with a small screw driver, and plugged in the power cord. After pushing the power switch to get the image, I adjusted the tiny screw that is angled towards the front of the projector and the stripe dissapeared! Since your stripe is angled, you may need to adjust both alignment screws. The screw heads are very tiny torx bit types but I was able to use a 3/64" (.05") allen (hex) wrench that came in a set of cheap jewelers type tools that are widely available. Be very careful while operating the unit with the lamp cover off as there are very hot surfaces and exposed wiring.

Posted on Dec 05, 2007

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sheridan1952

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It may be an alignment issue, but it is also likely that the light tunnel has failed.

Posted on Feb 28, 2008

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