Battery disconnect on? If not, disconnect or turn off power before you turn it on.
Good power coming in on shore power?
Transfer switch stuck? Sometimes these things hang. Should be a box inside your power compartment. Tapping with a rubber mallet normally does the trick.
What are your indications? Do you mean no power to 120v outlets? If so check the ol' GFCI. It has gotten us more than once. The other one is the 12V battery disconnect.
Have you tried your generator to see if you get power...Do you have power at your main breaker in your coach...Work back from there or forward from your power pedestal..
I know this may sound silly, but check to see if the switch is in the ON position on the shore power. I always turn it off before unplugging or plugging in. I hope this is the problem
I did the same thing on my Meridian when it was new. I leaned against the dash and accidently hit the disconnect switch that cuts power to the coach. I went nuts briefly until I realized the goof. Easy fix tho.......