Was the oven doing a self clean when the PF occurred? If so the cavity limit probably tripped.
Sometimes the owner wants to shut down the process of self clean for whatever reason that also trips the cavity limit. If the oven circuit breaker is weak then their could be a power failure during which the oven was on and that could cause the cavity limit to trip. No lights on panel means the temp inside the oven control panel exceeded normal operating temp and the small inline fuse going into the control panel has melted:
This is what that small fuse looks like. To get to the insides
you usually drop the side trim exposing the screws then the controls fold outward.
Service manual for American stoves and more If you need further help, reach me via phone at
https://www.6ya.com/expert/dan_73bbd84fe1d95b61
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