Have you reset the breaker to the oven?
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From my experience when there is a power outage, This is likely to have wiped out the control board on your oven. I see it all the time after storms. If a storm comes through, I get a ton of phone calls about control boards not working anymore or doing crazy stuff. If resetting the breaker has shed no light on your situation. I would recommend replacing the main control.
Also when you get this fixed, plug the stove into a surge protector of some sort. This will decrease the chances of a power outage doing damage to the oven control.
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