Question about Samsung 40 in. Flat-Panel LCD HDTV

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When I turn the tv on it has pixel color dots all over the screen. will it get worse? what can I do?

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It wont get better...
call samsung...describe problem

Posted on Apr 26, 2010

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1 Answer

Two white dots appeared on screen- one blinks and one does not. Picture is currently good


DLP/DMD chip is failing. you need a new DLP chip for that model TV. the pixels are sticking. it will get worse as time progresses.

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What is the problem when white dots can been seen on the tv screen?


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White dots appearing on screen, also have black dots if you look closely...


It can be pixel problem. Every pixel has one transistor to switch off or on. I hate how manufacturers treat us because lot of them 'believe' that this is not a problem (must be more than 6-8 pixel problem on screen for changing). Sometimes little press with finger and shutting down screen can help, but it is possible to do worse if it is to hard press. Price for screens depend on that tolerating of bad pixels from manufacturing. Only few manufacturer can give you guarantee pixel free screen. It is good to know that we have right to return device after buying if we are not satisfy.

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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.
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The snowy dots and dots are typically from a poor signal going into the TV.

If there are colored pixels that stay lit all the time (like a red pixel and never goes away) and for any input, that’s called a stuck pixel.

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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 screen. Here's a video that will help you find where the DMd chip is located : http://www.youtube.com/watch?v=0jr_9A5Xd2Q Have a blessed one!

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A gree speck on the screen


It's an "open" pixel. It is unable to close to block the light, so it appears as a dot. The color white is made up of red, green and blue. So, a single open pixel will have just a single color. If you have had the TV for just a short time (< 30 days), many retailers will exchange the TV. However, if you have had the TV longer, you should contact the manufacture. The pixel specifications will vary from manufacture to manufacture... but some manufactures have a zero dead pixel specification and they will repair the TV at no cost to you. I hope this was helpful, best wishes.

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1 Answer

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Probaly will not get worse, but is a stuck pixel. If you press on the screen at that pixel, does it go away? Check with mfr see if it is covered.

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