I have a Samsung HLN467W a friend of mine gave me since he upgraded to a newer LCD tv. He said it was making a noise, which turned out to be the color wheel, which I replaced and seemed to fix it. Since I replaced the color wheel, the tv will work fine, but after watching it awhile, the picture freezes with the screen turning black with a white, "ghost-like" outline of the people on the screen. The sound is still on, but the picture doesn't come back on. Sometimes, when I wait a few minutes and turn it back on, it will work again. However, other times, it will be hard to turn off after the picture freezes and I end up having to unplug it to get it to go off. Is this a digital board problem? I tried to look up the part, but couldn't find one for this model. Is there another compatible part for this model? Is this a hard repair to do yourself once you have the part?