Jj C Crystal River , FL August 24, 2015 Appliance: LG Air Conditioner LP121HEM-Y8 Lg Heating Cooling Package Unit Lp121hem-Y8 / Asbbeus: Pcb assembley adjustment snapped off. How to replace Main Pcb Power Control Board Assembly. Got the parts from Appliance pro in just two days had it back up and running that day Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes