1. Press menu from remote or decoder.
2. Select user set up from main menu.
3. then go to general settings.
4. Select aspect ratio.
5. Change settings to 16:9 if its on 4:3 or vice versa.
1. Press menu from remote or decoder.
2. Select user set up from main menu.
3. then go to general settings.
4. Select aspect ratio.
5. Change settings to 16:9 if its on 4:3 or vice versa.