Whirlpool Microwave Control Board Replaced but bottom light stays on

Brand: Whirlpool
Model Number: WMH31017FB-0
Main Symptom: Replaced Control Board with W11552018 but bottom light will not turn off (stays on)
What happens & when: Originally replaced the control board with newer version because light under the microwave would not turn on or work. When replaced with W11552018 the newer control board now the light stays on and will not turn off.

Error Code (if any): N/A
Parts or tests already tried: W11552018
Photos / video link:

Use a multimeter and the attached Pin out chart to check the board
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