Turn signals out after smoke in combo switch

[fixkick]

that slider looks good to me so that means the other side is wrecked, burned up.
this is what they do.
one side of the other fails. its just contacts. if the contacts dont mate, then try to fix them so they do.
there is no other way, its just a switch.
if it switch dont close, its damaged
fix the damage. is the only cure.
my guess is the brass pads are blown up. vaporized by huge heat during a short.
if you put say 30 amps through any 10amp connect it blows up. (my guess at rating) It's not normal wear, that, and you saw the smoke, so it did fry.