Dead display and stove control

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Brand:jennaire
Model Number:jes1750es0
Main Symptom: oven and control board dead. Stove works
What happens & when:

Error Code (if any):
Parts or tests already tried: display swap didn’t do it
Photos / video link:

I have a jennaire elect stove oven (JES1750ESO) which display went black. I traded out the display (#29) and didn’t change it. Wondering if it’s likely 16 or 21 on specs?

- Derek

Ensure you have all the connections in tight and nothing loose. If it is not a loose connection or #29 it would likely be #21.

https://www.appliancepartspros.com/whirlpool-cntrl-elec-w10803488-ap5982829.html