Question about IBM E400 Multimedia Projector

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E400 black screen with white dots

I have a IBM E400 Projector hooked up to a DELL laptop. Has worked flawlessly for years. Now all of a sudden when I turn the projector on, I get a black screen with white dots everywhere. Kinda looks like the sky at night. Anyone experence this problem or know what it is?

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Calmly explain that you know the white dot problem is rampant, that you know that these failures are being handled out-of-warranty, and that you'd like to have your unit handled similarly. (For the record--never, never get irate with a phone CSR. You get much more with sugar than you do with salt.)

A little research will show you that Texas Instruments is the primary manufacturer of the DMDs. They license other companies to sell their devices in their rebranded units. So any white dot problem can be handled the same way with any other company. Be patient, but be firm. Never be afraid to calmly ask to speak to a supervisor when you don't receive the answer you're expecting.

Posted on Feb 22, 2012

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Hi, I am having the same problem right now with my BenQ projector! Did you manage to fix your issue?

Posted on Jan 29, 2010

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Black and white dots on screen

Hi Emmanuel,

I think your projector lamp and LCD area is dusty.
please use pressurized air can and clean the area.also check the dust filter.
do it carefully.

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if the DMD chips had been bad, it will show some white or dark dots on the screen, it looks like that this machine need 1076-6038B DMD, but I can't make sure. so need you to find a repair man help you to reconfirm it.
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Sir, its white small dots on complete screen, like sky with stars,

Place a white piece of paper about 1000mm in front of the screen and focus the image sharply.
Choose menu, image, advanced then select color manager.
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The DLP chip is most likely the faulty component

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Hi i am having problems with the projector it was going well for the last year that i have it but up to a week ago i have been getting tiny white dots appearing on the screen from the projector. i have...


I noticed you have a DLP projector. I have a Optoma EzPro 756 which is also a DLP projector.
I notice white "blobs" on the screen when there is a black screen. It is caused by dust getting into the optical block not the lense. If you are comfortable with opening up the projector, you could gently blow out the optical area with compressed air, GENTLY so you don't dislodge any components, and see if that helps. I seems to be a common problem with DLP projectors a few years old. If there are sharp focused dots on the screen then most likely, it could be some pixels starting to go bad like dead pixels on a computer screen. That problem is pretty much irreversible.

Hope this helps,

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