With the onset of high-definition television broadcasting, you may have to adjust your television's screen. Most programs are broadcast in 4:3 aspect ratio, which used to be the standard. The standard format of HDTV, non-digital TV and analog wide screen television is a 16:9 aspect ratio. Some HD signals do not allow picture sizes other than 4:3 and Full. Although your Toshiba TV may offer other screen width options, they may not be usable with your digital signal.
Press "Menu" on your remote.
Use the "Up" or "Down" arrows to highlight the "Video" menu. Press "Enter."
Press the "Up" or "Down" arrow buttons, and highlight "Advanced Picture." Press "Enter."
Scroll through the available picture sizes. The available picture sizes are Full, Theater Wide 1, Theater Wide 2, Theater Wide 3, Natural, and Full. Press "Enter" to select the desired size.