Thank you for your question and I understand your concern.
Based on your symptom the electronic oven control/clock assembly will need to be replaced.
The oven control/clock assembly is part #71003424 which will cost approximately $201.71 and the service fee which includes the labor is approximately $130.00.
To access the oven control board:
Disconnect the oven from the power supply
Open the door as wide as possible.
Remove the four screws along the bottom of control panel.
Grasp the control panel by placing both hands on the right and left sides of the panel, lift up and out to disengage the upper flange.
Slide the upper oven rack out and place the control panel on top of the oven rack. (Cover oven rack with a cloth to prevent scratching.)
Remove the screws securing the oven control board to remove.
Transfer one wire at a time from the old to the new control board.
Reverse the procedure to re-install and to re-assemble the control panel.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services
You can view or down load the User's manual from
Manage My Life