Janice O Weaverville , NC January 19, 2016 Appliance: LG Refrigerator LBC22520SW Lg Refrigerator Lbc22520sw / Aswclgg: Circuit board failure. How to replace Pcb Assy, Main. A service technician in the area looked at the refrigerator and determined that it was the circuit board. He told me that it would be 4 days or so and he would be back to fix it. I called 5 days later and was told the part would not be in for another week so I ordered the part from you and replaced the bad one Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes