When you turn on oven, convection bake, bake or clean it will run for 5 to 10 seconds, then turn off, it will keep running on broil though! I was told at first it was the clock timer, but if I set the timer, it appears to work fine, I can set the minutes lets say for 2 min. and it counts down fine. It beeps when the time is up. The beeper though will beep just out of the blue, sometimes a few beeps spmetimes just on and on so you have to turn the breaker off. I got a call today and the person who said the clock timer was bad now says the relay board is also bad, He said another tech had told him from his desciption. Now I understand most appliances, generally fix them myself, Its hard for me to believe both these parts have gone bad. I would think one or the other. All of the stove top still works fine and the downdraft. What does it sound like to you? Where are these two items located on the range, What do you think the problem is? is there also a good drawing of where I need to go on the range. Thankyou so much!