Jim A Independence , KY October 01, 2018 Appliance: LG Gas Range LRG3091ST Lg Range Lrg3091st / : Oven would not start after lightning strike other functions were working fine. How to replace Pcb Assy Power. Replaced the “power” control board. There are two control boards. The other one was ok. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes