I had my hard disk replaced about 6 years ago but I decide to replace it myself this time. I think the service guy must have had a problem with the power socket as this was wobbling on the logic board when I opened it up. I unplugged the mic but left the power (red and black wires) in the board as this was so loose it would have come clean off trying to unplug. I put it all back together and it didn't fire up. In the end I had no choice but to pull the power socket clean off the board as it wasn't making any contact with the contacts on the board. Using a magnifying glass i could see that this wasn't soldered (looked like it was glued) and had two plastic pins. These pins slotted in two holes on the board to align. I the end I just put a bit of superglue gel on the pins and using tweezers place it in position and held it there for 20 secs. It was how firm on the board like the mic socket. Before screwing it all back I pugged in the power to test it. It worked. Fired up instantly. If you ever manage to pull off the socket, just glue it back but avoid getting glue on the contacts.