My Mitsubishi WD-52525 DLP worked fine for 4 years...now, one day the screen is black with white pixels flashing. I hear sound on all devices...I can also see the device menu, but none of the devices show picture.
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Spot remover. Black marker? Maybe not. (;^D).
Really, if it's just a little white dot on the screen, it may just be a bad pixel. Those things happen. The manufacturers warranty against more than 'so many' bad pixels, but if there's just one, I doubt they would replace it. If it's a big block of white, you might be able to get it replaced.
Dead pixels can not be repaired.
The model# WD-52525 you provided is for a DLP TV.
If you are seeing white dots on the screen it is due to a bad DMD chip or light engine. Unfortunately, it is not a cheap fix.
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.
Hi,Yes your problem sounds like the DMD board.This is how it works: http://electronics.howstuffworks.com/dlp1.htm Basically the light of the lamp goes through a tunnel that carries a color wheel(rotating disc with a gamma of colors that creates the colors on your tv)then the light of the lamp goes through the DMD board which is a chip composed of around 2 million pixels that creates the images and colors.When it starts to fail it will create black bars,pixelation,color distortion or white dots on screens.Found it right here http://www.discount-merchant.com/MITSUBISHI-RMD62-939P977A20-Light-Engine-p/1138084.htm?Click=48173 Have a blessed one!