I get green blotches on my Samsung 42" HDTV. When I turn it on it, the whole screen goes green, then the picture comes on but with green blotches running especially where white color should be. Anyone can help?
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As in there's blotches of red and green at the edges, but the image is still there?
If so, then your screen may have come into contact with magnets, or maybe the alignments are off (TVs align overlapping images in red, green, and blue).
As always, check with the manufacturer support lines, as they would have specific information for these kinds of scenarios.
The humming will usally come from the color wheel(one of the only moving parts), which is part of the light engine. If the tv is starting to get a green picture that is a sign that the light engine is on it's way out.
Are there any magenetic devices like speakers or high amp stereo recievers next to the TV? These blotches could be because of electro-magnetic intereference. Try moving devices away (anything metallic or which has a magnet in it)
The same thing happened to me Twice!. First time it was under warranty. Now it it out and Vizio has not interest in helping me. The first time the repair man changed the motherboard, which worked for about a year. Looks like I will be buying a new TV soon, but certainly NOT a Vizio, they are junk Anyone out there know how much a motherboard costs?
I have determined that mine had a problem with the composite input board. I was able to unhook the connections to this board inside the TV, after Akai, and the local repair guys couldn't figure it out....
The problem hasn't come back in a while, and since my setup is all HDMI/Component ins, I didn't affect me at all.
It looked like there was slight heat damage to the board, but not enough that it was caused by a design flaw, more like a manufacturing "accident".