Mine was second hand, and definitely not serviced since the guys eyebrow hairs were stuck in the view finder!

I probably did less than 100 hours with it before I sold it, but I never serviced it either. I ran a head cleaner tape through it twice and that's all.
I'm sure it depends on how well you look after things. I'm the sort of person who always removes the battery and tape and puts the cam in it's box after every use, plus handle it gently while using it. I'm sure more enthusiastic users will end up breaking it eventually.