Television and Home Theater

ok,i just turned on my tv today,and the screen did not turn on! the sound worked,and i can hear everything inside working,but theres no screen! i own a Big screen thats a Mitsubishi,not a plasma. Can anyone help?

This tv/vcr combo is only 2yrs old, used for 8mos., then was not used for a year. When my daughter wanted to use it again it would turn on, no pix or snd, just a slight flash on the screen and turns off. No fuse blown, no indication of components getting hot or discolored and no smell. Inside is totally dust free and I checked components and soldering, all check good. Anybody have any ideas what to check for as I am an E/T but not with TV's anymore. Thanx, Acer

My television this morning woke up with only a white line going through it . Its a 24 or 34" mitsubishi good brand not so good in this shape .what or where can ido with it ?