Looking for some insight on a problem I've recently noticed with a 52" Sony Bravia LCD TV. It's just over 3 years old and I recently noticed a pixel wide vertical black line about 3 inches from the left edge of the screen. I had been reading that this is probably either a dead or stuck pixel. But my understanding is that a stuck pixel would look white against a color screen and a dead pixel would look black. I had been thinking this sounded more like a dead pixel, but, after the TV warms up a bit (around 15 mins after turning it on) the line disappears. I also noticed the line is more pronounced against red to yellowish colors and less noticeable in the green/blue spectrum. Any ideas or insight on what's going on? Is this likely to get worse if I don't have it repaired? Or is there something simple I can try to resolve the issue? Just wondering if anyone has had a similar experience. Any advice would be appreciated. Thanks!