Gianluca P Pittsburgh , PA May 26, 2019 Appliance: Samsung Refrigerator RSG257AARS/XAA-0000 Samsung Refrigerator Rsg257aars/Xaa-0000 / : Water dispenser started randomly (light would also come on). How to replace Pba Main. Replaced electronic control board Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes