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1,white spots appeared on screen,means the DMD chip is broken,you need a new DMD chip.I supply the DMD chip and the price is USD200
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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
ligth points means white dots? It's probably you have a busted DMD chip, have your technician replace that, better yet buy a new projector because replacing that chip costs almost a brand new unit.
It's hard to access. Remove two screws rear of case and two screws bottom of case to remove the lid. Remove three large screws from mainboard - one at the rear in front of the input port, one to the left of the projector lens, one deep below some blackout tape in the front center of the board. The entire mainboard assembly will now come out. The DMD sub board is to the left of the lens. One screw on the bottom holds it to the main board. The DMD subboard can now come carefully off its connector. The DMD can now be popped off the front of the sub board by using guitar pick or similar.
Sounds like the DMD chip is getting bad pixel failure. Most likely the chip will have to be replaced. If the white spots are well defined and rectangular in shape when you get up close to the screen, then this would confirm the problem.
Just tell your friends that it's snowing in Kenya and the snow flakes are getting on the screen and ask the children to try and brush them off. Make the most of it until you can get it fixed, or get another broken one that has a good dmd chip and swap parts.
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