DONT USE the remote that came with your TV
use the buttons on the box to change the channel. did the channel change?
usually when someone only has one channel its because they are changing the tv channel not the cable box channel
think of it like this:
the TV is a monitor and should always be on the same channel (3, 4, hdmi, or whatever) its actually the box that tunes and the tv always stays on the same channel.
so if you change the tv channel you are no longer watching the output of the cable box.
USE the remote supplied by your cable provider
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