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Projector powers on but shows black screen with hundreds of white dots. Opened it up looked around, closed it up, turned it on, and now thousands of white dots show up.
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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.
I would be willing to bet the DMD chip is failing the cheapest used one i seen was on e-bay the chip # will be something like 1076-6319W the only part of the # that matters is the last from what i have seen they tell me the 6318W and 6319W is suppose to be the same chip the used on i seen on e-bay was $124.00 probably better off seeking a new projector if you can not replace yourself as you will have over half of the cost involved hope this helps Robert
The link to the article explains the the cause of the white syndrome none of the previous internet experts have a correct solution. I have the same problem the link to the article attached is for a Mitsubishi projector but all the chips are the same. http://www.fixyourdlp.com/2012/04/26/solve-the-mitsubishi-white-dot-problem-for-under-200/
perhaps it is the reason of DMD chips, 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. this DMD is not expensive, so please don't be worry aobut it,
A line on a LCD screen (like a laptop) is caused by a faulty power connection in the screen.
Usually a entire row or column will not activate causing a black line to show. When you closed your laptop, the screen is powered down. When you opened it back up, the screen would be reinitialized and it appears that you lucked out on your issue.
When a row or column fails it is usually a permament failure that can only be fixed by a monitor technician or a screen replacement.
A similar failure can happen that causes black dots to show on the screen. These are burnt out junctions where the rows and columns meet together. The dot is commonly called a pixel.
it's not the lamp. if you've replaced the cords and still have the problem, reset the settings to factory default to make sure the resolution matches. if still not ok, there may be an issue with the main board.
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