My refrigerator bottom freezer section seems to only work intermittently. Basically sometimes the freezer section will work but not make ice. Sometimes nothing works. Sometimes the freezer section and the fridge section both not cooling. I can unplug from the wall, wait a few seconds plug back in and everything will work again and sometimes it still stays broke. Other times if I just wait a few weeks, it will just start working again making ice and freezing. It seems to be all over the place. Most of the issues seem to be effecting the bottom freezer section. Door ice maker is still working. Was told by an appliance repair guy it may be the Main control board going bad. When I look up the part, I see several control boards. Not sure which one I would need. Any help would be great, Thanks.