Ensure the connectors are soldered very close to the PCB.
4.11 GPS/ RFT Connector
LS1 (Piezo Buzzer)
C8 (0.1F)
To solder the GPS / RFT connector: First wet one pad on the PCB
with solder. Then place the connector in position and re-touch the
pad with the soldering iron. This will anchor the component and
then you can solder the remaining pads.
Ensure the arrows on C8 are aligned with the corresponding arrows
on the PCB