Product review (5 stars): Fixed my problem
Part was exactly as described and worked perfectly once installed.  The installation wasn't even that difficult.  My dryer is a Samsung model # DV5471AEP/XAA.  The problem I was having was that the drum would continue to spin after a drying cycle had ended even if you turned the power off with the button.  The only way to stop the drum was to leave the door open or unplug the dryer from the wall.  I assume a relay built in to the board was sticking.