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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
hi,
You projector have problem with DLP engine. You have to replase the DLP and its driving module. If it have warrenty then conatct nearest Benq authorised servicing center. Because the DLP engine will cost a lot, and also the avilabilty of the same is very rare
OK
No you don't need a driver, connect it using a VGA Cable, then press FN Key at the same time with Fkeys that has a monitor screen Icon on your keyboard.
This is caused by dust on the lens assembly. If you can remove the lens, clean the surfaces with a lens cloth. That should resolve the problem. It is possible that the there is dust in the optical pathway inside the unit as well. If the cleaning of the lens does not resolve the problem, the unit should be brought in for a professional cleaning. It is not suggested that anyone open up these units as there are fine adjustments that can be changed internally easily that could result in convergence problems.
I have found that vertical lines that suddenly appear from projectors are due to poorly connected cables. Sut off your projector and wait for the fan to go off. Then unplug the connectors from the computer to the projector and secure them again, making sure to go all the way. Hope this helps.
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