No burnt wires anywhere I can see. I'm not looking for a complex answer - if it involves tools, I probably shouldn't be doing it. I understand how much electricity is running through that unit. I just want to make sure I haven't missed the obvious such as a fuse, a loose wire or a tripped breaker. I'm a home-owner looking for help at a reasonable price and I don't feel that a $200 service call fee is fair if all the person does is change a fuse or flip the breaker.
Thanks for all the replies. I'm confident I've done all I should so I'm calling in a pro.