My 2011 Sportscoach had a similar issue. I replaced the amplifier behind the switch. Still have the problem from time to time. If the light is not on under the switch then the amplifier is not working. I couldn't get any channels without amplifier. I pull the panel that the switch is on and mess with the wires until the light comes on. It may just be a loose wire to the back of that switch.
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USCG Ret
2020 Winnebago Vita 24F
2018 Jeep Wrangler Unlimited Rubicon Recon
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