Oven Does Not Go Above 250

WORKING ON A OVEN THE TEMP WILL NOT GO ABOVE 250, I USE MY THERMOMETER AND PLACE IT IN THE OVEN, THE DIGITAL READ OUT SAYS 350 BUT BUT THE INSIDE TEMP IS ONLY 250, SET IT FOR 425 AND INSIDE TEMP STILL 250, SO I REPLACED THE THERMO PROBE AND STILL THE SAME THING, COULD IT BE THE DIGITAL READ OUT? I KNOW ITS THE ONLY PART LEFT IN THE SYSTEM:mad:

Most likely the problem is a bad control board aka a clock/timer. Unfortunately this part has been discontinued by the manufacturer and is no longer available.

Here are the breakdown diagrams and http://www.appliancepartspros.com/partsearch/model.aspx?model_id=34126

Gene.