Either the connection on the rear has a loose fittting there or at the booster, yes it runs to the booster which acts as splitter for antenna & cable, or you haven't scanned the tv after switching it to "cable". You must scan the channels every time you relocate or change inputs.
We've also found some park cable systems are almost worthless & usually get more channels with better picture quality by using the antenna.
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Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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