About a year ago my brand new iPod classic got a tiny amount of water inside of it, and the battery was almost completely fried. It would flash the apple sign repeatedly after a month of no use, but still did nothing.
It says that it was rated a 6/10 difficulty, but it was my first time and completed it within ten minutes! It was a little rough getting the tools between the front and back of the iPod but with a little thought and wedging it was completed!
Never get discouraged when your iPod has anything wrong with it, troubleshoot it and don't hold back! It's a lot easier than you think!