Here is a list of things you can try to fix the horizontal flickering on your Smart TV screen:
- Try Restarting Your TV: Unplug your TV from the power outlet for a few minutes and then plug it back in. This may help reset the display settings and clear out any minor issues.
- Check Your HDMI Cables: Make sure the HDMI cables connecting your TV and devices are firmly connected and secure.
- Power Cycle Your Devices: Unplug each device connected to the TV (such as game consoles, media streaming devices, etc.) and then plug them back in.
- Check For Firmware Updates: Visit the manufacturer's website of your device to check for any firmware updates and install them.
- Reset TV Settings: You can reset your Smart TV's display settings to the ones set at the factory. Refer to the TV Manual for detailed instructions.