Michael J Pittsfield , IL July 17, 2014 The oven was not heating up i noticed that they upper element was heating up and the bottom element was not I replaced the lower element. Tip: be sure to unplug the stove before working on it. Even though the oven was not turned on, there was still power to the element. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes