How do you clean the dust out of the projector, there are particles that look like small white stars on the black areas and black stars on the white areas. Is this dust?

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.
regards,
nuwan

White spots on the screen are generally caused by a bad DMD chip.Multiple elements of the chip remain continuously on causing these spots.Solution is replacement of DMD chip.
Samr

I am assuming that the "bubbles" are most prominant when the picture is dark. If that is the case, it is most commonly referred to as dust "blobs". Dust particles get on the lens assembly inside the projector and are just out of focus so they appear as blobs or bubbles. If you can carefully remove the cover and gently blow out the lens / color wheel area with compressed air it should reduce the "bubble" effect. I would not recomend any further dissasembly as it is complex and time consuming and unless your very careful, could end in disaster. Don't forget to clean the air filters either.

you'll need to use an electronic swab, and use air to blow out the loose dust particles.

http://www.alibaba.com/product-gs/426050499/3_Round_Tip_Foam_Swab.html

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.
go through the color options and check if some pixels are permanently on or off (ie small dots or black) instead of a uniform colour on the screen.

The DLP chip is most likely the faulty component

Yes you have dust particles inside the light chamber.
Remove the filters and clean them gently with a vacuum cleaner.
Used a compressed air can to blast air into machine and have vacuum (on Low) **** up dust.
You may have to take out bulb to do this (dont touch the glass on the bulb)

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Please dont forget to vote this answer was helpful

Many thanks

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Unplug you projector and allow the bulb to cool. Open the area where the projector bulb is located. Check the projector lens for any damage and clean it from dirt's and dust. Same as with the bulb.

please check for foreign particles in your developing unit and charge and transfer units

Hello there. First, some info you need...Green LCD=purple onscreen, Red LCD=cyan(baby blue) onscreen, and Blue LCD=yellow onscreen.
These spots (specks?) are probably dust particles that get past the filter. Annoying but harmless. To check if they are indeed dust bits, if you can focus sharply on them, then yes, its dust. To remove the particles completely will require a service. They will only return eventually. You can try to blow out the biggest offenders with some canned air. And, to help slow down dust entry, keep the dust filter cleaned so that the unit always has plenty of air movement--you'll have a cleaner image with the added benefit of LONGER life of the lamp and projector components (dust is the number 1 killer of projectors)

I had the same problem. It is specks of dust on the DMD chip that the lens focuses on.

If you take it apart you can see a long telescopic lens that points at a small chip. This chip contains all the micro mirrors that produce the image.

Fortunately this sensitive item has a glass cover. Unfortunately it can be contaminated with dust. I just squirted a jet of air from a camera lens blower brush to remove the specks of dust. Problem solved.

Here is a link to a dismantling guide: http://www.flickr.com/photos/todbot/81868083/in/set-1749030/


(If you get any dark shadows at the edge of the screen then the light tunnel between bulb and colour wheel has partially collapsed.)