At times, your TV may display a pattern of digitized, small squares that freeze into place. The pixelated images may cover all or part of the screen. Pixelation is unique to digital signal transmissions. It happens when the TV receives a low or incomplete signal. Several TV models have a Digital Noise Reduction (DNR) feature to help minimize the effect. Whether or not your TV has a DNR setting, a few troubleshooting tasks may help cure your TV’s bout with pixelation.
1. Confirm that the coaxial cable is securely connected to the TV. Check that the TV-to-coaxial cable is tight on the wall terminal that connects to the outside cable.
2. Change the antenna’s direction and raise or lower its height if pixelation continues.
3. Remove additional TV’s from the cable extension or splitter if pixelation continues.
4. Scan your channels if pixelation continues. Press the “Menu” button on the TV control panel or remote control. Use the cursor arrow keys to make your selections. Highlight “Channel Scan Memory.” Press “Enter.” Enter the number of the channel that showed pixelation if it did not scan into memory, then press “Enter.”
5. Press the “Menu” button on the TV control panel or remote control if pixelation continues. Use the cursor arrow keys to make your selections. Select the “Picture” or “Picture and Sound” menu based the available menu items. Select “Manual” to make manual adjustments to the Picture settings. Select “Digital Noise Reduction,” then select “On.”
6. Contact your cable TV or satellite service and ask for a cable wear check if pixelation continues.