Note: If you experience any issues with the lights not working and suspect an
issue with a component, please try a different port on the expansion board to
verify where the fault lies (with the light or expansion board). To correct any
issues with expansion board ports, please view the section addressing
expansion board issues on our
online troubleshooting guide.
17.)
Use the LEGO removal tool to disconnect the tower roof section from the
top of the third floor. Turn this section over onto it’s front so we can access
underneath it as shown below: