I thought it was a heat issue but its now winter and its happened again. I have green dots or pixels on black or white colors and it seems to just surround lines. Now that i'm looking at it, i'm getting red dots now too. *sigh*
It happens on DVD's, cable, PS3, while watching stuff on my media center PC. So its not any single component, its definitely the TV.
What do i need to replace to get this working again?
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Re: Green Pixel or dots issue on Samsung LN-4051D
That's a flaw in the driver/timing circuits, but it could also be something simple like a ruptured ribbon cable or poor connection during manufacturing. Simple or not either way the driver/timing circuits need to be serviced by a professional technician.
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I assume this is related to your LCD monitor.
I think you mean dead pixels. The LCD monitor has tiny pixel elements, one for each red, blue, green color and each one of these colored pixels are turnes on by a transistor. When a transistor fails then the colored pixel it controls does not light up. This is a dead pixel and it shows up as a tiny black dot.
If the screen displays a blue screen, a dead blue pixel will appear as a tiny black dot in the blue screen.
You normally would not notice a few dead pixels unless they are grouped together.
what it is, is on plasma screen tv's and LCD, they can get too cold, too hot, or over-powered. when any of this happens with just the right conditions, a thing called "dead-pixel" occurs. basically, the pixel will not respond any longer to tbhe electrical signal, so will not change with the rest of the screen. its basically broken
Hello. If it resembles a tiny bright green dot, this is most probably a dead pixel. In the troubleshooting guide in the user manual, the manufacturer states that some pixel loss is normal--either they will be gone or permanently "on". If the unit is new(i.e. still under some warranty) talk with the supplier about options--they *may* decide to replace it if the dot is in a particularly annoying location. Be aware though, they won't be under obligation to do so. I own a LCD projector with a few visible pixels--as devices such as these(lcd tv's, projectors, plasma, etc.) age, this type of phenomenon is going to occur. Normally--and this certainly isn't always true, there is a tolerance of 3-9 pixels. Check with the supplier and/or manufacturer for individual specs. Especially if the unit is under warranty!--Hope I successfully assisted you.---Rick
I had a similar problem with my LG plasma. I used the Image Sticking Minimization (Pixel Orbitor, White Wash, and Inversion) feature which is designed to prevent image burn in and ghosting. This ISM feature may be available on the Samsung or any other brand under a different name. I activated the "white wash" option for about 30 mins, the screen turns white and somehow the pixels get reset. The green noise disappeared after that. I hope this helps.Phezbuster
No, it isn't to do with white balance. Instead it is due to a combination of noise swamping (or at least modifying significantly) the exposure measured by the pixel, and the interpolation algorithm in the sensor processing chips that "guesses" the colour of a pixel based on the readings from nearby pixels. These algorithms are better at rendering certain kinds of image elements than others. Large areas of darkish colour often fool the algorithms into attempting to produce detail that doesn't exist.