Getting a 5th generation iPod fixed?

About 3 to 4 months ago the click wheel on my ipod had sunken in. I tried to fix it myself and thought I had broken my ipod when I had taken it apart so I left it alone until recently. I had thought I fixed it properly, it showed all my music was still there but no sound was coming out. I think it's possible that I have messed up the Headphone Jack and Hold Switch but I'm not entirely sure. If I can't fix this myself, I would like to know how much it would cost if I were to have someone else fix it.