problem getting picture

Hi, I have a older rear projection tv. I believe around 1994 or older. My problem is that I get sound but no picture. I turn it to menu, but have to get real close to barley see it. I can only see a real faded blue color. The same thing with ajusting the color lines. but when I am trying to watch my channels, there is no picture at all. Just sound. Anyboby out there ever have this problem, or know how to fix it? I would really appriciate any kind of help! Thank You, Chaos