If your cable or satellite provider uses a set-top box that connects to the TV via HDMI, you can skip the channel-tuning process. 4. Begin scanning for channels.
Steps. Make sure that the antenna cable is properly connected to the TV. Press the HOME button, then select [Settings]. Select [Digital Setup] → [Digital Auto Tuning]. Follow the on-screen instructions to tune in all available digital channels and store their settings in the TV. On a TV, the refresh rate is "the maximum number of times the image on the screen can be drawn, or refreshed, per second." Measured in hertz (Hz). The refresh rate of a TV helps to determine how clear the picture is during motion. You may have noticed that an otherwise crystal clear picture becomes slightly blurry, the more movement is on screen. .