Do you have an inverter? True story
Camper across the drive had problems much like yours, Including no power to TV and Sat receivers.. I ask if he had an inverter,, Believe it or not he did not know.. Well we found the inverter and the breakers
One toward the left, One toward the right (OFF)
Turned the 2nd one one and he went inside, His wife ask if I thought I could help.. His reply was priceless "Help... He's already fixed it" and so I had.
For the record.. I never expected those breakers to be front and visible, It's never that easy,< They are supposed to be on the rear where you need a flashilght and a mirror to see them Somebody goofed on that install :) .
