When you're ready to relax and watch television, it can be frustrating to have to deal with problems with your cable box. Odd errors, slow response times and other issues can sometimes be solved by resetting your cable box. You can perform a power cycle to reset your Comcast cable box yourself; if that doesn't work, then a technical support representative can send a signal to your box from her computer to reset the settings.
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Turn off your cable box using the "Power" button on your remote control or on the box itself.
Unplug the power cord located in the back of the cable box from the electrical outlet to which it is connected. Allow the box to remain unplugged for at least one full minute.
Plug the power cord back into the wall outlet and press "Power" on the remote or the front of the box.
Replicate the actions you were taking when you noticed problems with the cable box; if you are able to proceed without a problem, then the reset has been successful.