Screen not showing picture

I THINK YOU MAY HAVE A LEAKY GREEN CRT BEST SOLUTION IS REPLACE THE
GREEN PICTURE TUBE .

Check and make sure you are on tv not video. Unplug and replug all the game systems or other things you might have plugged in your tv.
And if those don't work make sure you are not on input channels (input1, input 2, and do on). If still you are having problems go to the tv menu and and make sure you are on antenna if you have a antenna or cable or satilite if you are on one of those. I hope this helps!