@mohamadkibrit the jazz board is an adaptive defrost control. I’ve attached a link that explained step by step how to diagnose it. They do fail quit often. When they fail the symptoms will be: the freezer is working but the fresh food section is warm. The evaporator coils inside the freezer behind the rear panel will be covered in ice/frost. You May notice the frost on the rear wall in freezer.
https://appliantology.org/blogs/entry/650-how-to-test-and-replace-the-adc-jazz-circuit-board-in-maytag-and-amana-refrigerators/[br]