No trailer brakes

DW and I are spending the summer in Olathe, CO - can't stand the humidity in FL! When I was preparing to unhook here, I wanted to move my Curt slider hitch to the rear or maneuver position, so I positioned to slide lever on the hitch, got in the truck, squeezed the brake controller levers (as I've done many times before), put the truck in gear and moved forward - only problem was, so did the trailer! Ended up putting wheel chocks fore and aft to block 5th wheel from moving. So...realized I had come down the 11K foot drop from Monarch Pass (Rt. 50) w/out trailer brakes on the way here - thank the good Lord for His protection! So yesterday, I began to investigate my dilemma. I sanded the contacts in both the plug and truck receptacle (which both looked good to begin with) then plugged the trailer to the truck. Started the truck and had DW try both the controller levers and brake pedal while I had my hands on the trailer brake drums, but felt nothing. Today I got my multimeter out, turned the truck on, and had wife turn try signals, running lights, etc. on and all was well. So I had her squeeze the controller levers and got voltage, but when she released them and applied the brake pedal, no voltage. There is a 30 amp fuse for the trailer brakes in my engine compartment which I pulled and checked, and it was good. Any ideas out there? Am I right in thinking if all is well, I should feel SOMETHING on the brake drums when brakes are applied?