A plasma display device to reduce noise generated from heat sinks. A chassis base is attached to a surface of a plasma display panel. A printed circuit board assembly is mounted to the chassis base at a side opposite to the plasma display panel and connected to the plasma display panel. The print circuit board assembly includes one or more circuit elements. A heat sink having a plurality of fins is attached to the one or more circuit elements. A fixing member connects and fixes free ends of the plurality of fins to one another.