When the oven is turned on "Bake" the lower burner does not burn. The igniter heats up but no gas comes into the burner. At one point, a small amount of gas was released into the burner after an extended period of time but it was not enough to maintain the oven temperature at the desired setting. The computer on the stove has replaced within the past week. The problem existed before the new computer was installed. Is the problem a regulator or valve problem or something else? Thanks
steve