Foen & Hirsch 42 inch flat screen tv with picture problems.How can I fix it?

My F&H 42 inch tv has vertical lines running down the left hand side of the screen and extend about 8 inches on the screen from left to right.These lines waver and on occasions disappear.It distracts your attention from viewing the picture.I would like to know is it repairable so that I can get my full distortion free screen back or should I look for a new replacement tv