Question about Dell 2300MP Multimedia Projector

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Dell 2400 MP DPL Projector projects a yellow tinted image.

In recent weeks, at least a couple of times, the lamp light comes on and shuts down the projector. However, after waiting a brief time, turned on and everything was correct. There is a high concentration of dust in the building (remodeling a warehouse for a church building in Central Amercian nation of Honduras, Tegucigalpa).
The night before the problem arose, we watched the soccer game of Honduras/Trinidad and Tobago and their was zero problems.

What are the possible causes of this? I have read several forums on the internet, but nothing that directly addresses this projector.
Yellow tint is constant and not patchy. I suspect that it needs a thorough cleening, but do not know where nor how to do this. They sell air compressed in a can for cleaning electronics here, but I really don´t want to open the machine up for any reason and do inintended damage.
I do a lot of PPT in sermons and song lists and yellow tint makes photos make people look like they have a severe case of Malaria.
Hence, I need help. Warranty is no longer in effect.

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Clean any external dust filters or air openings in the unit.If you don't want to remove the filters, you can simply use a vacuum cleaner hose to suction away the dust from the filter element--same effect anyway. The unit probably does indeed need a thorough cleaning.
The yellow effect is most probably a burned BLUE polarizer filter located behind the blue LCD panel. (Color key--Purple onscreen=green lcd, baby blue onscreen=red lcd, and yellow onscreen=blue lcd). That's how you can tell which lcd has dust on it! Usually, the green lcd has the most free area around it and collects the most visible dust. (large purple specs) The polarizer filters can get burned due to excessive heat (not keeping proper ventilation). Of course, it might be the blue LCD panel which is failing prematurely due to heat build-up over time. The polarizer filter isn't that expensive if it can be replaced, however, the actual lcd panel IS.---Rick

Posted on Sep 08, 2009

Testimonial: "Thanks. Problem resolved by simply removing the VGA cord and using the S-Video cord instead. Bad cord or bad computer connection. I do need to clean.."

  • iamruben Apr 12, 2011

    the dell machines are dlp technology they use a color wheel you probably lost blue color down the rgb path probably doesnt show up with raw ntcs video in a lcd machine like the infocus you cud of lost a filter red is the most common lost in the infocus machines i am ruben the av shop foreman

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I too use the projector for songlist and had the same cbc identical problem. I thought maybe the bulb was about to go. I noticed however that the yellow tint would only appear when the cord that transfers the image to the screen was plugged to the computer. I replaced with a new cord I had handy and that did the trick..Thank God.

Posted on Jan 16, 2015

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