Gary Z Aptos , CA August 03, 2019 Appliance: Jenn-Air Side By Side Refrigerator JS48SEFXDA Jenn-Air Refrigerator Js48sefxda: 48" Jenn Air built in stopped working no cooling no lights 12 vdc power supply was pulsing 0 4v. How to replace Power Supply Board. Replaced DC power supply and everything now works. Do-It-Yourself Rating: Repair Time Estimate: 2+ hours