Pic suddenly went dark, very dark. Images seen are oversaturated. hitachi ultrascan hd is about 8 years old. Help!

This is a very common problem within your projection TV set there is a small red, green, and blue picture tube. On top of the tube there is a lens that focuses the video on the screen. Between the lens and the top of the tube there is a hollow chamber filled with a clear liquid. This fluid is specifically designed to keep the tube from overheating. After about 4-5 years the fluid will start to become cloudy and will will get worse over time. Tvrepairkits.com is a good place to get a repair kit to fix this condition yourself.

I have the same problem. I took the back cover off of the TV and blew all of the dust out and the TV started working again. But this only lasted 2 days. Now the TV is dark again.