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Support XFINITY TV XFINITY TV: Basic Troubleshooting

Introduction

If you have a problem with your XFINITY TV service, please use the following basic troubleshooting tips.

Always check the following:

  • The TV is powered on and set to the appropriate input source for the set-top box.
  • The set-top box is powered on and tuned to an authorized cable channel.
  • All video cables between the set-top box and the TV are firmly connected.
  • The coaxial cable feed is firmly connected to the set-top box and the wall jack.
  • If you have checked all of the above and you are still having trouble, then please also check these:
    • If the set-top box video output is connected to a home theater unit, verify that the home theater unit is powered on and set to the appropriate input source.
    • Ensure the set-top box video output is connected to a TV through an HDMI connection.  Turn the TV power off. Turn the set-top box power off. Wait one second and then turn the power back on for both devices.

Find this article at:

http://customer.comcast.com/help-and-support/cable-tv/x1-basic-troubleshooting/