Keith B Warner Robins , GA November 21, 2015 Appliance: Model SAMSUNG NE595ROABSR Oven took way too long to preheat! Found the technician service manual taped to the inside back cover of the unit. Followed the procedures in testing the heating elements and related components. Ordered the pcb assembly, it arrived in 2 days, installed it in about 15 minutes and oven works like brand new. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes