This will be the flow of power to the inverter panel and out as I've drawn in red. checking that the power is getting to and through those breakers is one step. If you follow the lines from the inverter breaker to the different locations where it is used and find some of those places work, it tells you not to worry the inverter breakers.
But if you find one or more of the "routes" out of the inverter breaker is not working, check to make sure that breaker is fully tripped off and then back on.
Think of this drawing as an old paper road map and find the "hole in the road"???
Click this snip to get better view or go direct here on page 7!
https://www.winnebago.com/Files/File...ire_189384.pdf
Maybe the bridge is out?
See if that makes sense and tell us what you find? Lots of info out there, we just need to sort the good stuff out of the confusion!
EDIT:
Note that the last bottom route is NOT on the inverter, so the galley/ dinette will not work when not plugged into power. Blue line down, perhaps?
__________________
Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!