2005 Outback By Keystone MN Wf-8955ANP NO POWER but sockets

The camper just stopped working, We can plug in lamps and we have lights but we have no power for the ac, refridgerator, microwave, nothing for the tank panel and we are stumped.We looked at everything that we could, power coming out of each breaker, going to the circuits,but nothing is working.All overhead lights are not working and the fuses are fine. AC to DC converter does not appear to be working. We are looking for an Electrical schematic and of course when we called Keystone, they offered for us to come in and get it serviced, which can't be done because we can't get the slide in (we have the manual for that aspect). Does anyone have a schematic or a suggestion as we are stumped! Thank you in advance!