Kitchenaid KSEG700ESS1 oven not getting above 325 degrees

General
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1

Please make sure to click on General above and select the correct appliance type first.

Brand: Kitchenaid
Model Number: KSEG700ESS1
Main Symptom: not getting to temp
What happens & when: on bake setting it will not get above 325 degrees

Error Code (if any):
Parts or tests already tried: changed oven bake element, changed the display control screen, ohmed out the temp probe, tested the voltage at the terminal block and at the bake element terminals, Photos / video link:

2

There are several components involved in the bake system, the bake element, the temperature sensor, and the main control board that contains the relays for bake and broil. This is the part number for the board, WPW10453975 Range Electronic Control Board | Genuine Whirlpool OEM In Stock