check your inverter for popped breaker, they used little round white button breakers that pop out slightly. likely you'll have to feel around for them. Some inverters have two (in & out) & some have three but I don't remember whether its 1-in/2-out or vice versa. If its a popped breaker on the inverter, you're done when you reset it if it doesn't pop again; if it does you have an overload or bad breaker.
If not breaker on inverter, check the breaker out of the gray 120V panel to inverter, cycle it off then on. If not that, could be the 120V input phase inside the inverter has burned out, or you have a bad connection; for the latter start at the gray panel, shut off power to the coach & remove the face, tighten all connections while you are in the neighborhood. Plug in again & recheck; if still no good, check 120V in at inverter connections.
If you are not comfortable w/electricity, have someone qualified do this just to be safe.
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project