Defrost control not operating

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Brand:whirlpool
Model Number:wrb322dmbwoo
Main Symptom:freezer operating properly refridge not cooling ,ran through diagnostic test

check defrost tstat closed also ohmed out defrost heater 29 ohms

bypassed defrosted board getting 4 amps when bypassed

ordered and installed new board new board set up code 01

still the same problem when i try to get it to go into forced defrost

no power comes through the board to defrost heater
What happens & when:

Error Code (if any):
Parts or tests already tried:
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