No picture / distorted picture

Make sure that the antenna is properly connected to the TV.
Make sure that the correct device is selected as the display source.
Make sure that the external device or source is properly connected.

Sound but no picture

Change to other video sources and then change back to current source, then do picture style restore in Picture settings or do Factory reset in General settings option.

Poor antenna reception

Make sure that the antenna is properly connected to the TV.
Loud speakers, unearthed audio devices, neon lights, high buildings and other large objects can influence reception quality. If possible, try to improve the reception quality by changing the antenna direction or moving devices away from the TV.
If reception on only one channel is poor, fine-tune this channel with Manual Installation.

Poor picture from a device

Make sure that the device is connected properly. Make sure the device's output video setting is the highest possible resolution if applicable.
Restore picture style or change to other picture styles.

Picture settings change after a while

Make sure that Retail mode is set to Off. You can change and save settings in this mode.

A commercial banner appears

Make sure that Retail mode is set to Off. Press Quick settings > TV options > Settings > Device Preferences > Retail mode and press OK

Picture does not fit the screen

Change to a different picture format.
Change Display mode to Automatic.

Picture position is incorrect

Picture signals from some devices may not fit the screen correctly. Check the signal output of the connected device.
Change Display mode to Automatic.

Computer picture is not stable

Make sure that your PC uses the supported resolution and refresh rate.
Make sure HDMI video source is not supported HDR content.