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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.
1,white spots appeared on screen,means the DMD is broken,you need a new DMD. USD200
any questions, feel free to ask me
have a nice day!
Jerry Lampdeng Limited
First thing you should do is to check whether the original image is clean and no dust or anything.
The next one is to clean the scanner glass. Use a clean cloth to wipe the scanner glass to make sure there is no dust or anything that might reflect the light from the scanner that can cause white spots.
Does the camer have a removable lens. Is it an SLR camera. If so, there probably is microscopic dust on your sensor, or you have some dead pixels on your sensor. If you can get to the sensor, you can easily clean it with a cleaning kit. The most effective way of cleaning is to blow it off with clean air. Be gentle. On an SLR it is necessary to lock the mirror up. Your instruction book will explain how to do that. For more suggestions, Google cleaning my camera sensor and you will get a lot of suggestions. :-)
If these are like "bubble" spots and they appear in different places on each photo, I'm guessing you're shooting flash pictures indoors. The spots are dust particles in the air reflecting the flash. This happens on small point-and -shoots because the flash is almost in the same plane as the lens.
try changing the paper, newly opened and not old stock, in these cold days, chances are there were some humidity or moisture on your paper, the spots that you saw could probably caue by poor transfer of image to your medium (paper)
As is common in many compact digital cameras where the built-in flash is very close to the lens strange reflections can appear in images under certain conditions.
Particulate matter in the air in front of the lens (between the camera and subject) such as water vapor (as in a cloudy day), smoke, dust or other items can reflect light directly into the lens causing neutral colored white/grey semi-transparent spots to appear in the image.
In extreme examples there may be many of these spots in an image or there may be only one per image. Also, since these spots are completely random they will move or disappear from image to image. For example, if two images are shot consecutively with the same camera settings one image may have spots while the other is clean.
To avoid these spots:
When possible, avoid photographing in smoky, dust, or cloudy areas
Do not use the camera's flash in locations such as above
Use an external Speedlight flash if a flash is needed
Review images on the camera and re-shoot if spots are visible
Cleaning the lens will not have an effect on these spots, as the particles that cause this are not on the lens itself.
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