Quote from Pugsly:
I can attest that soldering the wires will fix the problem. I pulled mine off too when upgrading to a 500GB HD. The BOTTOM 2 CONTACTS are the ones you need to solder to. The one has a little arrow pointing to it. If it doesn't work the first time, switch the wires around. It did not work the first time foe me, and than i tried the other two contacts with no luck, than i went back and reversed the wires on the lower par, (the two that are closest together). Make sure you don't touch the solder together on the board. I put the a small drop on the wires before hand, than put the wires to the board and just touched the top to melt the solder to the contacts.
Thanks for the note, especially about reversing polarity if it doesn't work the first time. I have to say I am slightly confused about which contacts you used. There are two dots on my board that do not appear to be solder points. Immediately below them are the two solder points that are pointed to by the arrow - I think those are the right ones. Then a bit farther below that are the two solder points that I think are only used to keep the connector head surface mounted to the board.
Sorry I cannot give advice on how best to remove the cable from the connector - mine broke before I realized I had to do that. That will teach me to read the instructions more carefully.