4. Turn the board over and disconnect the Bluetooth cable.
5.Remove the RJ-11 port, with attached cable, to transfer to the replacement board.
The RJ-11 port slides off the sound/DC-in board but may be very tight. It may be helpful to pull on the port, or push it with the flat blade of a black stick, until it begins to move, then use a black stick to create leverage behind the port.
110 - PowerBook G4 (15-inch FW800) Take Apart | Sound/DC-In Board |