I have a Panasonic TV model number PT-50LC13, and last night when I turned it to video mode to watch a movie the TV switched to a "full screen mode" to where it doesn't use about 5 inches of the screen on each side of the picture. The TV still shows the whole picture but it is in a condenced view (like a normal tv). I don't have the original remote for it but I have tried to reset the screen but to no avail. Any help would be great! Thank you.

Is your TV a wide screen TV? If it is, you are stuck preserving the 4:3 aspect ratio.

You need to get a new remote for the TV. Go to the vendors website and request one. Then go to the setup menu and reset the aspect ratio.