Is your HDTV underperforming? Here' s a really quick fix[ Sat, 19 May 2012 14:16:04 GMT ]Every TV has a button that zooms in on the picture, or changes the aspect ratio. These modes have a variety of names, but all have the same purpose. In reality, most of the time there is only one “correct” mode for a better picture. Here’s how to do it.