Usually the thermal fuse in the resistor pack blows but that still allows fast blow. If there is no blower at all then either the fuse has blown , which it hasn't, the motor is burnt out, the switch is broken or there is no supply. I would check the connectors at the blower motor for power and a secure connection. If there is no power there, pull out the switch and do the same. If still nothing then you'll need to look at the connection at the fusebox. A 12V bulb with long wires attached is good for testing that the power is getting where it should.