To diagnose a failed heating element, perform a continuity test using a digital multimeter set to the Ohms (Ω) scale. With the oven power disconnected, remove the wiring leads from the element terminals. Measure the resistance between each terminal and the metal ground chassis of the element. A healthy element will show infinite resistance (OL). Any measurable continuity or low resistance reading to the ground chassis confirms an internal short circuit caused by a degraded heating element.
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