Brake Lights.

is it possible for this to be a problem in the directional signal switch? i mean ive got all turn signals working, from my tests with my circuit light the power goes up the column but never comes back downs it would have to be the turn signal switch right? What i dont get is how the hell could all of the light work just fine except for the brake light?!? Makes no sense to me, im kinda think about ordering a new turn signal switch but thats pretty expensive when its not really guaranteed to fix my problem.