Hello, Lou -
- Switch the circuit breaker for the oven to Off.
- Wait a full minute.
- Switch the circuit breaker back to On.
If those steps do not work to solve the problem, the problem could be caused by the micro-switch for the door lock assembly signaling to the oven control board that the door is locked. You will need to remove the door lock assembly cover. Before doing that, make sure the oven is unplugged from the electric outlet. You will need to pull the oven away from the wall.
Then, disconnect the door lock assembly wires from the micro-switch (make sure you note where the wires connect) so that the door lock assembly can be moved back to the open position.
Then plug the oven back into the electrical outlet or flip the circuit breaker to On. Test the oven to determine if it runs on broil or bake. If it does, the door latch assembly will need to be replaced.
If the oven still doesn't work and the control light continues to flash indicating the door is still "locked", then the electronic oven control will need replacing.
See this video:
If you do not feel comfortable following the steps for removing door lock assembly and the subsequent steps, you will need to arrange for a repair technician to come to your home to determine what is wrong and make repairs.