Your oven may have randomly stopped working due to several electrical, safety, and component failures that occur without warning. The most common sudden failure is tripped circuit breaker or blown fuse: electric ovens require 240 volts from two breakers, if one trips due to overload, oven stops and will not heat, check breaker panel and reset both breakers. For gas ovens, gas supply valve may have been accidentally turned off. Second, thermal fuse blown, a safety device that blows when oven overheats due to blocked vent or failed fan, cutting power to control board, costs 20 to 40 dollars. Third, control board failure from power surge after storm or outage, causing blank display or no response, requiring replacement at 150 to 300 dollars. Fourth, door lock failure: if door latch stuck in locked position after self-clean, oven will not start bake until lock disengaged. Fifth, temperature sensor failure causing F3E0 error and shutting down heating. Sixth, heating element burned out on electric models, element may have visible break or blister. Seventh, igniter failure on gas models, igniter glows but not hot enough to open gas valve. Eighth, power outage that reset clock, many ovens require clock set before they will start. To troubleshoot, unplug oven for 5 to 10 minutes to reset control board, check breaker, ensure door closes firmly, and try setting Bake at 350 and pressing Start. If oven still dead, check for error codes.
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