Here we have a case where Boeing maybe has a wrong or incomplete checklist for this problem.
Come on.. don`t overreact.
So the transfer bus is off. Not resettable. allright.
You loose some equipment.
There are more failures in the QRH where mr. Boeing doesn`t give you any fatherly advice about what to do next. And luckily so. Because that is what YOU get paid for.
If it`s really serious, it`s land at nearest suitable airport. If it`s not serious enough, well it`s your call.