When a residential kitchen oven completely fails to turn on or show any power after running a high-heat self-cleaning cycle, the sudden failure is almost always caused by a tripped internal thermal overload fuse. The extreme temperatures (exceeding 800 degrees) generated during self-cleaning frequently trigger the thermal fuse to melt open permanently to prevent a kitchen fire. You can troubleshoot electrical power safely using a digital multimeter. You can verify that your corrective action is successful when unplugging the oven, removing the rear access panel, testing continuity across the thermal fuse, and replacing a blown fuse restores full electrical power to the control panel and heating elements.
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