VIVITEK D825MS video Projector dir Sir, white & black small dots and pixels on the screen I Believe it is a prblem with the DLP chip. please your dignostic . thank you. Mr Haim Leibovitch

This is a dlp projector and has a bad DMD chip. Most models are very similar. Here is a video of a similar repair.

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

The DLP Chip is failing .The DLP or Digital Light Projection Chip contains up to 8 million tiny microscopic mirrors that tilt to project a digital image onto the screen. These mirrors are failing causing light and dark spots to appear.Unfortunately fixing this projector is probably going to cost more than buying a new one. Hope this helps.

The DLP chip is failing. The only way to fix the "dots" is to replace the DMD (digital mirror device) chip. Overheating causes this starfield effect to occur. See youtube video for explaination.

Home IPS LaserExpress

If you focus the image on a screen up close to the projector and notice small rectangular black and white spots, then you have pixel failures.

if these are pixel shaped dots then the DMD chip is most likely faulty

the DLP chip is probably suspect

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

make a cleaing, if it still is full white dots, it should be problem of DMD chips,

buy a 8060-6038B DMD chips and instal it. only cost USD184