Turned power off to wall oven at the circuit breaker. Gained access to bake heating element located under heat shield at bottom of oven. Disconnect one of the two wires from the heating element. With my multimeter to check continuity at the two terminals of the heating element. No continuity (replace heating element) Continuity (carefully check for 220 volts that connect to element). If you have 220 volts replace element. If you don't have 220 volts you have a control problem. When a new element is installed, it will smoke the first time it is turned on.