Flip the logic board over to expose the antenna on the back side.

Disconnect the four coaxial connectors from the logic board and remove the antenna cable from the logic board.

Be careful not to touch any metal to metal contact points with your bare fingers—use tweezers or gloves. Finger oils may disrupt conductivity. If you do touch any of these components, clean them with a degreaser like windex or isopropyl alcohol before reassembly.