The lower oven keep warm setting did not shut down at 170. It continued to 400+. Same with the lower oven bake function. Sears said thermostat was the problem and it needed a new control panel for $500 installed. I bought one from you folks and installed it. Part #AP4097094. Easy install. Lower oven bake functions works fine now. However, keep warm continues to overheat...
I also heard a "pop" sound when the keep warm was heating up. I later pulled the oven, checked the control panel and surrounding area with no sign of anything out of the ordinary...

Am wondering if it might be the Hi Limit Thermostat? Any ideas?

Thanks.