I have 2 of the original Fantastic Fans; company is now owned by Dometic. Anyway, each has its own fuse, since all three quit simultaneously, I suspect a tripped breaker or as you suspect a blown main fuse. I haven't a clue to location of main fuse panel.
This may turn into a where's waldo hunt unless a like MH owner comes forward.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy