Converter Box (settop box)
DTV Television set (typical Vizio set)
How do I perform a channel scan? If you are using a Cable or Satellite box connected using AV, Component or HDMI cables you will not need to do a channel scan as the box you are using works as the tuner and you will not be using the tuner inside your television. You will also want to ensure that your television is on the correct input for the cable type you are using.
If you are using the coaxial input then you will want to take the following steps to perform a channel scan:
Please follow the steps in this order:
Once the above steps are complete please remove the cable connection from the DTV/TV connector on the back of your television and run a channel scan to clear out the existing channels. How do I do a channel scan?
Once this is complete plug the cable line back in to the DTV/TV connector and run a new channel scan.