Are you sure your slides do not have a separate fuse not part of the regular fuse box?
I had same problem with one slide, and it took mechanics three hours to find the fuse for the slides and one minute to replace the fuse. They had to crawl under my motorhome and remove a wall panel to find it. It was hidden underneath my bed in an area where my converter and rear furnace are located. That area, which consists of about a third of my under-bed area, is enclosed in a plywood box. I had no idea that the slides even HAD a separate fuse. At least next time, I can direct someone to the location for a lot less labor cost!!
I don't suggest you tear out wall panels, but you might want to call Coachman in the morning and ask about a possible second fuse area.