We noticed the problem when the fridge was frequently getting too warm. The freezer was cold, but we also noticed that the freezer was TOO cold. Rock hard ice cream, ice cubes that would basically shatter when you poured water on them, etc. I figured out how to force the defrost cycle, and that would work for a bit, but we kept having to do it, and it was becoming less effective. I also noticed the compressor was running all the time. I finally ordered the replacement jazz board after verifying that it was the right model number (thank you APPs.com). I did have to get into the freezer again to thaw out the entire back wall (bottom freezer). I can thank AppliancePartsPros.com for that too because they have videos showing how to access these areas. The part itself, the circuit board, took about 5 minutes to replace, including programming. I'm including the tools and time it took to also defrost the freezer in this description. The board replacement was the easy part.