Welcome to the forum. Unfortunately I am not familiar with your Solera LED awning, but it sounds like you have verified the Thor provided fuse is good. Did you verify that the 12vdc is also on the LED side of the switch when it is turned on? Did you verify that the ground wire for the LED lights is also still grounded properly? Also the resettable fuse may be a thermal fuse element provided by Solera, which resets itself after some cool down period (30 seconds to a minute for example), as opposed to an actual push button resettable fuse...... but I don’t know the product. Perhaps the thermal fuse failed, or it is not resetting automatically if there is a short (pinched wiring) somewhere in the awning wiring perhaps? Not much help but just throwing some speculation out there for consideration. I hope you find the fault and that it is not a failed LED string.