Does your unit have an Inverter?
I have a 2018 Outlaw 28H and the three TV’s are wired through the Inverter.
When there is shore or generator power, the AC is passed through the Inverter to the TV’s. When there is no AC power, then they can be powered through the house batteries via the Inverter.
If your unit has a similar setup, there could be an Inverter issue or check the built-in breaker on the Inverter.
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