Click wheel went down but i damaged another cable inside when stripping. Its a 4th gen. Ipods are very easy to break, i know of loads that get smashed up, water damaged, software faults ect.....
I used to have a classic that was solid, my old iPhone was a 2g, that was severley beaten in work, that still worked after dropping 20 feet out my shirt pocket to a solid wood floor! I dropped my iPhone 4 the other day, it bounced, not a scratch. I is puzzled, you see them on eBay for spares