2002 Alfa See ya #70749 no power to coach from shore power.

so just to make sure I understand, your ATS blew and you have no power to the breaker box from shore.  when you start your genny you do have power or do not have power?  if your genny is run into the other side of the ATS and you  do have power when the genny is running then one side of your ats is blown, but the secondary is fine, if you don't have power either way the both relays are gone and you need a new ATS.  

If thats not what you mean your going to have to explain it a bit better.