there is a simple electrical way of looking at turn signals/emergency flashers...

12v to the ignition- ignition to the switch- switch to the fuse block- fuse block to relay- relay to bulb- bulb to common grounding point- common grounding to battery.

so, ignition is working so that isnt the issue, if the fuse is recieving power when the switch is on, then the switch is working, if the fuse is good then next is the relay, test the voltage at the bulb to see if the relay is working, if there is no voltage to the bulb, but there is voltage at the fuse (on both sides of the fuse) then its a relay

try that and let me know how it works for ya