I have researched the parts breakdown and found that the clock-timer is an AP4102828. Mine is acting up and needs to be replaced. I also made note of the $254.00 price tag attached to that clock but it is better than paying $1000 for a new oven. I recognize that the minute I install that clock it is unreturnable. My question is: Is there another solid state board in this oven that could be causing the problem? I certainly do not want to Pay $250 to find out that there is another underlying cause to the problem. The clock is very erratic and the timer works sometimes and sometimes it doesn't.