Locate a power generator similar to the one in the study room. Arrange the connectors so there is an unbroken route. The hint is given at the bottom left corner of the panel: – -> + -> -. Slide the bars at the top and bottom of the connectors. Puzzle solution is shown in the image below.
Go through the door to upstairs. Locate and turn on the power switch by the window. Go back downstairs. The device on tripod is powered up. Flip four switches then press the diamond shaped button in the center of the device.
Locate an oscilloscope on the desk. The two buttons control the oscillation. Press the left button to turn on the device. Then press the right button until the green frequency to match the black frequency. The device of the tripod will start operate and reveal the entrance to the clock tower. At the clock tower, pick up a wheel with a handle.
You will be taken back to the top of the gold box. Four tokens will eject. Use the sliders at the bottom right and bottom left to control the direction of the token. Move each magnetic token into a socket. A mini tower will appear. Enter the tower.
This mini tower has similar setup as the previous mini tower. Go to the front of the box. Insert the metal handle in the empty slot. You have to move the gear on the right to the circle on the left.
Puzzle solution: Rotate the center wheel so the tracks are horizontal. Turn the handle to move the gear on to the center wheel. Turn the wheel vertically. Turn the handle to move the gear upward. Slide the top panel to the left. Then turn the handle to move the gear to the circle on the left. Press the button on the circle.
Check out the puzzle at the top of the box. Adjust the metal plate so that the design on metal plate match the design at the bottom. Slide the handle to the right. Flip the switch on the right. A gear will eject at the left of the box. Grab the gear.
Locate a gear on the wall. Insert the gear you just retrieved. A staircase will appear.