Mark D Holden , MA May 20, 2016 Appliance: Samsung Range FTQ353IWUX/XAA-0000 Samsung Range Ftq353iwux/Xaa-0000: A relay or 2 on the pcb main assembly crashed and burned. How to replace Pcb Main Assy. Samsung sent someone for free to diagnose. We were hoping they'd cover the repair. The technician called back with a quote of $500 to replace board and wiring harness. AppliancePartsPros had the board for approx $115 and I was able to replace the melted connector on the wiring harness for $2. Many years ago I was an Aviation Electrician's Mate in the Navy, so I was on somewhat familiar ground. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes