//DMD Chip for all projectors

Projector DMD Chip The Part To Fix White Dots On The Screen

How does DMD chip work

DMD Chip is a great essential part for DLP projector which has several hundred thousands of micro mirrors on its surface. The mirrors are much smaller in width than a human hair and one micromirror inside the DLP chip is in charge of reflecting one pixel of the image. For example, if the DLP projector native resolution is 1280*800, the DMD chip contains 12,024,000 micromirrors. Because the micromirrors can rotate ±10-12° individually, to an on or off state, it can reflect the light through the lens to the screen or not. When the one pixel needs to show bright on the screen, the related micromirror will be in the on state, and if it needs to appear dark To the display, the mirror will be in off state. While it is in off state, the light from the projector bulb will be still reflected. It will be not reflected through the lens, but to the heat sink. That is why we can see a full image with bright and dark.

Projector DMD chips

What happen when the DMD chip stuck

From above, we know how does the DLP projector work with the DMD chip. And we can understand how will it damaged. When one or several micromirrors are broken or can not rotate itself, some pixels will be bright or dark or the time. They can not reflect the light correctly to the screen. This case may look similar to white dots, black spots or dead pixels. At the time you find some white dots, the number will be increased within days and make you difficult or even impossible to watch a few weeks later.

Now you may confuse why the micromirrors will be damaged or stuck. We may now that the DMD chip working environment is hot. When the projector is on, it’s at least 120 wattages Bulb provide bright light causes the air too hot. The hot air and light projected to the micromirrors make the DMD chip become aging with time. As the micromirrors damage, we can clearly see the faulty mirrors from the DMD chip mirror side like the bellow picture. Therefore, when you find black spots on your projector screen, you can disassemble your DLP board and check if there are any dots appear on the chip.

Bad projector DMD chip

Bad projector DMD chip

How long does the DMD chip last

A new DLP chip will last 3-5 years regularly which depends on the projector cooling system. While your projector is new, and the fan works fine, the DMD chip heatsink is good, and it will help the chip last longer. To make the chip last longer, we must keep the projector inside clean. Clean the dust frequently, if your area is dusty and wet. Don’t shut down the projector before the fan stop cooling the heat.

Now you know how does the DMD chip work, and why your DLP projector appears white dots, black spot on the screen. There are only two solutions to solve the dead pixels error. The first one is replacing a new original DLP chip. And the second one is replacing your projector if you think it is not worth spend estimated 200 dollars to replace the chip.
From the following list, you can find the right DMD chip by part number if you know, and you can find your projector model number. iProjectorlamps.com has our experienced team on projector repairing, and we will do out best to help you fix your projector black pixels error. Feel free to contact us via e-mail when you are not able to find a right projector DMD chip.

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How to replace the projector DMD chip

As soon as you have a new replacement DLP chip, you can ask your local projector man to replace the dead one. However, calling a technical guy to repair the projector white dots or replace the projector DMD chip cost us more than three hundred US dollar. If we want to save some budget on fixing the dead DLP chip projectors, we need to know some simple disassembling projector works. The only tool we have to use is a screwdriver. Follow the steps to uninstall the original dead DLP part.

Disassemble the screws that held the projector case

There should be five to six screws that lock the projector case on the bottom of the projector. Take out the projector case. The case can be disassembled from the top side of the bottom side. It depends on the projector brand and models. Check carefully with your model.

Take out the projector lamps

Before opening the projector case, do unplug all the projector power cable, HDMI or VAG cable. If you just turn off the projector, let it be cool in an hour. And then, take off the projector to stay from damage. This action may prolong the original projector lamps.

Can't Find Your Projector Model?

If you are not able to find your projector DMD Chip model on the above listing, feel free to contact us to ask for a quote!

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By |2017-05-02T03:29:09+00:00March 17th, 2017|DMD Chip|3 Comments

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3 Comments

  1. michaell1899@gmail.com'
    Michael March 19, 2017 at 9:47 am - Reply

    Great post. Find my DMD chip for my NEC NP215. Hope to get it soon and fix my white dots appears on the screen.

  2. tomtom1998@gmail.com'
    Tom March 20, 2017 at 10:25 am - Reply

    Thanks for sharing. Do you have the DMD chip for 1080P projector? I got black pixels on my Optoma projector.

    • TseHomme March 21, 2017 at 7:47 am - Reply

      Yes. We have the 1910-6037E, 1910-6032E and 1910-6039E projector DMD Chip for 1080P projector.

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