I have seen similar posts on the forum about this 1 minute problem but I have never figured out what was the solution. I have had the Samsung DV218AEW for five years now. After two years the sensor dry no longer worked so we switched to time dryer. A month ago it would go through the whole cycle and go to 1 minute but never stop. It doesn't have the marching ants so I ruled that problem out. Saw that the main board was the problem so I ordered the part from Samsung's preferred parts store so I wouldn't get one of the older faulty parts (sorry guys but I didn't know about you guys yet). Installed it easily today and ran a test cycle...that never stopped. It always gets to 1 minute and stays that way.
Should I return the part and try again? Could the wiring be the problem? Since I didn't know the final solution I didn't know if it is crazy to keep returning the same part over and over. Thanks for your wisdom.