I replaced the defrost timer, which took about 10 minutes. After replacing the timer, I cleared out some ice that filled up the air passage from the freezer to the fridge (which allows the cold air to pass through from the freezer to the fridge). I went to sleep and the next morning the fridge was ice cold!!! Such a relief that I was able to spend a few bucks instead of hundreds for a new fridge. The parts took about 1 day to arrive, which was great.