Give you a bump.
Know nothing about your unit. How long have you had it? Ever happen before. What kind of slide out mechanisms do you have? Is there a Manuel crank or is it all electric? Check all of your fuses for one that is popped. Did they work before you got 'on the road'? Do most/all of the other 12volts systems work at this time?
2013 Forest River Salem Hemisphere SBT312QBUD
2001 CrewCab F-250 7.3 PowerStroke Diesel
SuperChip, BTS transmission, 6.0 Trans Cooler