I have a 2018 30.3. The unit was delivered with three TVs. Main ,bedroom, and outside. They all should work on regular ac circuit on shore power. On batteries with inverter on ac was supplied to bedroom and outside tv only. Thor said that they had to do that because the main tv in the counter is too close to the sink.
The switching between shore to inverter is accomplished by disconnecting shore power by you want turning on inverter by you. If it doesn't work lift the bed, open that hatch, tap on that transfer switch gently. It sticks occasionally. Inverter also powers outside fridge when on batteries. Does that work?
When it is working ask and I will tell you where to move the main tv cord so it will work on inverter also.
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Mace with 2018 Thor ACE 30.3
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