turning on my 36 in mitsubishi tv?

Is there a way to fix this problem. When I turn on the TV you hear the click that it normally would make but there is no picture. This happened once before I had to turn on and off the tv a couple of times rappidly until I finbally got the picture to come on. Then I just left it on all the time, until now whe I turned it off by accident. Is there something I can do myself? By the way its a 1989 Mitsubishi.

Thanks