Curtus S Lakeville , MN June 04, 2016 Appliance: General Electric Refrigerator PGSS5RKZCSS Ge Refrigerator Pgss5rkzcss: Interior lights not working water despenser ice maker etc exterior lights flashing would keep cool and freezer working. How to replace Pwb Pcb Power Control Board Assembly. New mother board 7 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes