Viewing UHD videos. Settings General External Device Manager HDMI UHD Color Try Now If an external UHD player is connected to the TV, use the HDMI UHD Color function to convert the TV's HDMI connector to a mode optimized for the UHD 50P/60P signals. When you select the HDMI connector you want to use for HDMI UHD Color , and then press the Select button to set the HDMI UHD Color function to , the TV screen flickers