WHEN i TURN THIS TV ON, ALL I GET IS A WHITE LINE, ON THE SCREEEN, WHAT MIGHT BE THE FIX?

A bright white line across the middle of the screen indicates vertical sweep output failure. Check and repalce dmaged component/s in the vertical output section circuit. Check for any loose solder terminals around the the vertical output section circuit. Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. It will make search easy. There are more than 1100 posts to different brand TVs now. Pull up older posts there.