Can be fixed. I wondered about this when I took my top cap off and saw how it went together. The weak link is the wire from the board to the terminal at the cap. The wire will fail if you mess with it much, very likey wher the wire meets the terminal which is what sounds like happened.
If it were me, I might try and fix it. I know how to solder and all that. But considering that I do have the tools that would work ie; soldering iron, solder. Rounding up the right size heat shrink, right size terminal..... and Waking sure I didn't heat the board up too much while soldering and maybe damagin it.... uh, I think I would send it in to get fixed. That way I would know it would be done right. Chasing down the right parts is probably gonna be more aggravating than waiting for the shipping and repair to be done..... if you can wait!