Provided is a washing machine having a printed circuit board (PCB) assembly. The washing machine includes a cabinet forming an external appearance thereof, a top cover coupled to an upper side of the cabinet, and a PCB assembly provided in the cabinet and configured to control the washing machine, wherein the PCB assemble includes a frame in which a PCB is accommodated and a cover covering the PCB, and the cover includes a heat dissipation path configured to dissipate heat of the PCB and a water inflow preventer configured to prevent water from being introduced into the heat dissipation path.