What is the most efficient way for Barry to determine if the power issue is with the power company or the sign itself?

Determining whether the power issue is with the power company or the sign itself can be effectively approached by switching on another device to see if it has power. This method allows Barry to quickly test the electrical supply in the area. If another device, such as a lamp or another sign, operates normally, it indicates that the power company is providing electricity, and the problem lies with the sign. Conversely, if the other device also fails to work, this would suggest that the issue is likely with the power supply from the company.

This practical troubleshooting technique helps Barry assess the situation efficiently, avoiding unnecessary escalations or waiting periods that would occur if he chose to check websites, ask others, or immediately call a technician. Each of those options, while potentially useful at a later stage, may not provide the immediate clarity needed regarding the source of the power issue.