Bradley B Kingwood , TX October 11, 2021 Bad main board. The dishwasher beeped but didn't detect the door closing and would not turn on. Installed the new mainboard -Found out that it could either be a bad door switch or a bad mainboard. Replaced the switch, didn't work. Replaced the mainboard and it worked. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes