George T San Jose , CA March 04, 2015 Appliance: Jenn-Air Refrigerator JS42SEDBDA Jenn-Air Refrigerator Js42sedbda: Refrigerator stopped working no cooling no lights. How to replace Power Supply Board. Measured power to power supply board (120V AC in, 12.5V and 26V DC out) 120V at input. 0V at output. Replaced power supply board. Refrigerator now works! 5 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes