B&E RV Service in Ocala is a qualified Forest River repair center. I don't know if they can help but they are good mechanics and fair. They were recommended by the Elkhart Forest River Repair Center.
Can you start your engine? If so, it will charge the coach batteries enough to start generator. May take a few minutes. I have done that.
I think the purpose of the dash switch is to use coach batteries to start engine (at least, that's what I was told during our PDI). Not sure about the other way.
If engine battery is dead, you can jump that, especially if you have road service.
Life is a journey, not a destination.
2005 Georgetown 359ts
Bill & Virginia, Kentucky
Nights camped in 2011...78 , 2012...73,
Nights camped in 2013...123, 2014 ...101