What channel does the tv need to be on for cable to work?

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If the coax cable from the wall goes straight to the TV then select QAM tuner on the TV set up menu and run a channel scan. You will only detect unencrypted channels.
If the coax cable from the wall goes to the cable box and that is connected to the TV with a coax RF antenna connection then usually channel 3 or 4.
If the cable box is connected via HDMI or AV connections to the TV select that input on the TV.
 

Tohotforu

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Sep 20, 2016
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I have a old sharp TV I have the ground cable Cord run to the cable box and other cord run from the back of the TV to the cable box I am not seeing a picture but I can see me changing the channel on the TV but no picture
 
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