Plug in one end of the hdmi cable.
Comcast hd cable box troubleshooting.
Learn some tricks for resolving the most common issues with these steps.
All comcast cable boxes are property of comcast and none are authorized for sale by other people.
You should only get cable boxes directly from comcast for new service replacements or additions.
Hd troubleshooting for your non x1 tv box.
Comcast customer service is here to provide help and support for your xfinity internet tv voice home and other services.
Learn more about your comcast tv box and download the user manual here.
If you purchased a cable box from ebay craigslist or any other re seller comcast will not activate it because it is actually an un returned rental.
This video will show you two ways to reset your comcast xfinity cable box specifically the x1 cable box.
Learn about replacing your equipment now to get the most out of your xfinity service.
The video cables between your tv and x1 tv box should be firmly connected.
It goes in the wide narrow port in the back of the cable box.
Make sure your hdmi cable is plugged into your tv and the hdmi out port of your x1 tv box.
If you re using a v cables instead plug each cable into the same colored port on the back of the box e g plug the yellow cable into the yellow input.
Replacing your tv boxes and modems faqs.
On most comcast cable boxes the hdmi port is either in the bottom right corner of the box or at the bottom of the box s back.