If your DISH TV is displaying in a smaller window, there are a few things you can do to fix the issue. First, check to see if the zoom feature is turned on. If it is, you can press the Zoom button on your remote control to toggle it off. If that doesn't work, try resetting your TV to its factory settings. To do this, find the reset button on your TV (usually located in the back) and hold it down for 30 seconds. Once your TV has reset, the picture should return to normal. If you're still having trouble, contact DISH customer service for assistance.