In the video, a person is seen using a multimeter to test a circuit board. The board is blue and has various components such as lights, motors, and fans. The person is holding the multimeter with one hand and using the other hand to touch the probe to different parts of the board. The lights on the board are turned on, indicating that the circuit is working properly. The person appears to be testing the functionality of the board by measuring the voltage or current. The video provides a close-up view of the testing process, allowing viewers to see the details of the circuit board and the multimeter.