Electrical Problems – Converter/Inverter

I have a 2011 Cameo 36FWS 5th wheel.  Last nigh the lights went out!  Apparently, everything related to the 12 volt system died, but the 110 volt system was still working.  I reached out to some friends to help me make it through the night and their best suggestion had to do with checking the fuses on the converter (I am not sure whether I have a converter or an inverter), but I do not even know here it is.  I Previously, I owned a 32FWS and the inverter blew on it (why do they always pick stark and stormy nights to have a problem?).  In that case, the inverter was under the stairs to the bedroom and it was accessed through the storage compartment beside the entry door.  How do I find this to check the fuses and is there something else I should be checking?

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