Frank H Louisville , KY November 14, 2024 Appliance: Whirlpool Electric Range RF378PXGB0 Whirlpool Range Rf378pxgb0: Front ieft burner was not heating up. How to replace Infinite Switch Top Burner Control Switch. I removed back and replaced the surface switch and also replaced all four knobs Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes