A digital TV including a receiving part for receiving a broadcasting signal and broadcasting information, a video processing module and an audio processing module for reproducing video and audio corresponding to the broadcasting signal, respectively, a power source for supplying power, and a controller for determining whether a video signal is included in the broadcasting signal based on the broadcasting information and controlling the power source to interrupt the supply of power to the video processing module if the video signal is not included in the broadcasting signal is provided. The present invention provides a digital TV, which is capable of preventing unnecessary power consumption by interrupting the supply of power to a video processing module during playback of an audio broadcasting, and a control method thereof.