- Check that your TV is correctly connected to the power source.
 - If possible, connect the TV with a different plug socket.
 - Test different HDMI cables, if possible.
 - Clean the screen, if the problem persists.
 - Restart your TV.
 - Adjust the TV settings in the 
system settings
. - Check the balance of red, green, and blue colors.
 - Check that your TV firmware is up to date.
 
