David W Perry , OH June 06, 2016 Appliance: Model MDHB979 Front control panel switch failure Replaced the front control panel. Troubleshooting guide that came with the unit helped me diagnose the problem in a few minutes. Part change out was done in 10 minutes. Dishwasher is working fine now. Happy Wife = Happy Life. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes