How to Convert a Cable TV Input to HDMI

By Traci Joy

HDMI stands for High-Definition Multimedia Interface. The clear and crisp HDMI picture is the result of digital video and audio, and it is made simple by using a single cable to connect the digital video and audio signal to your HDTV. Converting cable TV input to HDMI requires an HDTV cable converter box that has an HDMI port. This box can be obtained from your cable service provider, and when you request your box you should ask if the company provides the HDMI connection cable as well.

Things You'll Need

  • HDTV cable box
  • HDMI cable

Step 1

Plug the coaxial cable from the outside of the house, or the wall, into the "Cable In" port on the back of the HDMI cable box.

Step 2

Take the HDMI cable and plug one end into the HDMI port on the back of the HDMI cable box.

Step 3

Plug the other end of the HDMI cord into the HDMI port on the back of your HDTV.

Step 4

Turn on the cable box and allow it to run through its boot sequence, which can take several minutes. When the time comes up, power on the box and power on the HDTV.

Step 5

Go to your HDTV remote and select the "Input" button. From your choices, find "HDMI" and hit "Select" or "OK." You should now have a signal.

Tips & Warnings

  • If you can not access your "Input" menu from your HDTV remote, access it from the "Menu" button directly on your HDTV.
  • If you still have no signal after performing the above steps, contact technical support at your cable service provider, and a customer service representative will walk you through the steps again.
  • Do not interfere with your HDTV cable box while it is rebooting by unplugging it or turning your HDTV on, or you will have to start the reboot process over again. Be patient--the process takes several minutes.