My projector has little white dots that appear on a black or dark background, I've replaced the bulb and still have the same issue.I've read someone say the something about cleaning the light engine, is that possible and how hard would that be for an infocus in24 projector?

1,white spots appeared on screen,means the DMD chip is broken,you need a new DMD chip.we supply the DMD chip

We supply original projector parts: lamp, bulb, Lcd panel, Lens, DMD chip, color wheel,
motherboard, powersupply ... with high quality and competitive price.
Jerry
Lampdeng Limited

You're better off purchasing new projector, as the part (LCD block panels) will cost more to have it replaced.

it DMD chip issue.

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

1,white spots appeared on screen,means the DMD chip is broken,you need a new DMD chip.
we supply the new DMD chip,it's life is 6 years, and the price is USD200

Have a nice day!
We supply original projector parts: lamp, bulb, Lcd panel, Lens, DMD chip, color wheel,
motherboard, powersupply ... with high quality and competitive price.
Jerry
Lampdeng Limited

I have 2 NP-200 projectors installed in a school which show white dots on a black background and black dots on a white background. This is caused by the DMD chip losing pixels. Only solution is to replace the chip, I'm researching now if that i an economical solution.

Actually, this is a known issue with this specific model as 3M has acknowledged. We bought 4 of these and 3 have had to be replaced in 3 years because of this exact issue. It requires the mainboard to be replaced and it is almost as expensive to do this as to buy a new unit. 3M has been know help to us on this even through we bought the entire setup (Projector, Arm, Smartboard) and spent over $15000.

White dot for DLP Projector TV is not because of the light buy. It is caused by aging DLP chip ( DMD Chip.) Your TV DLP Part should be the following image:

Check the post how to place it diy

I feel Most of DLP's getting this issue. Please tell me If the black & white dots are blinking....
To see it you need to put very clearly focused A4 sheet. If some dots are blinking .... most of time DLP chip is bad or getting bad.. IF can please upload a very clear picture......

Your DMD chip or DMD driver need to be checked. The most likely it is DMD. If your projector is new with one year warranty, send it to the company for repairs. They will replace it at no cost.

sonsunny