Top of the fridge is the Eyebrow.. If the light comes on but the inside light does not you have one of three conditions.
1: BOB (Burned Out Bulb, Hey it happens)
2: Blown fuse Go outside and open the panel, lower left on the fridge is a black box. the fuse is under the cover (it just pulls off) on the LEFT, not the one in the center but the one on the LEFT, the other one bites so do not confuse them
4 Bad control board, Might be upper but more likely the one with the fuse.
Common wisdom is it takes 24 hours to cool..