I have a 2005, 42" toshiba LCD model 42DPC85 that when we turn it on everything is good except the whole screen is black but imediatly the colors dot by dot start making the black disappear, it only took about 5 minutes for the black to disappear with color but as time went on it took longer and longer until finally the color just wont come on. Any ideas?

You need a new DLP chip. The chip has little mirrors that are black on one side and white on the other side. When the chip wears out , your screen will turn white one dot at a time or black one dot at a time or they may just all stick shut at once. Since your screen is black, all your mirrors are closed. You can buy the chip from shopjimmy.com and they have a video of how to replace the chip so you can do it yourself. It takes about 1 1/2 hours. The chip is about $160. To have this service done for you is about $200. Do it yourself and save the money. Your tv will be just like new again. Just make sure the chip is in perfectly level or when you turn your tv back on, your picture will be slanted. you won't notice it on the picture itself but words on the screen or scrolling messages and the menu will be slanted.