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It might be either or but in the setting there is an option to search for the local channels and but since you have your cable box plugged into your antenna port, that could be the reason it’s not able to search for the local channels. I would recommend connecting via HDMI to get the most out of the picture and the TV if possible.
Sorry, there was a problem. Please try again later.For best video quality connect a Cable Box with an HDMI Cable. To watch free over-the-air broadcasts from your local channels, connect an antenna to the coaxial input of the TV. David M. - Insignia Support
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