After changing the time yesterday (EST), suddenly the oven light will turn itself on and off periodically accompanied by a "beep". Once, the enunciator flashed the F7 fault but went away when reset. Two years ago, I repaired an F7 fault by placing a paper insulator between the control panal ribbon wires. The oven controls appear to function properly. Do I need to replace the entire control panal assembly with key pad and the oven control module or just the control panal assembly with key pad? Secondly, are there visul instructions available for this repair?