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user_uuafyp Thank you for taking the time to reach out to us here on our Xfinity Forums! I am sorry to hear that you are running into issues with your cable box. Can you confirm what troubleshooting steps you have attempted, such as making sure the TV is on the correct input, ensuring that the HDMI cable is connected securely to both cable box and TV (if it is, we recommend trying a new HDMI cable) or performing any troubleshooting steps in our Xfinity app?