Jean G Saint Charles , MO September 03, 2017 Appliance: LG Electric Range LRE30453ST Lg Range Lre30453st / : The oven doesn't reach temperature. How to replace Pwb(Pcb) Assembly,Sub. We've not fixed it yet. We started with doing with pcb assembly but it seems like we also need a bake element. We're on to that next. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes