A:Answer Hi YouTubeScreenDark,
Please try the following troubleshooting steps:
1. Confirm that the TV is set to the same source as the external device.
For instance, if your cable box is connected to HDMI 1, set the TV source to HDMI 1. If the TV is set to the correct source but there is still no image, unplug and reconnect the AV connections one cable at a time from both ends of each cable. If there's any damage to the cable, it will need to be replaced.
2. Test the HDMI cable.
The test is designed for HDMI cords less than 6 feet long and may not give accurate results on longer cords.
To perform the test, make sure the TV's source is still on the HDMI setting for the cable you want to test, and then navigate to Settings > Support > Self Diagnosis > Signal Information > HDMI Cable Test > Start Test. If the test says the cable is bad, replace the cable. Service is not required.
If you continue to have issues, please reach out to us at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. Our LiveChat agents are also available by clicking on the ‘Support’ link on our website.
~ Samsung Advisor
