In our industry, technicians use many specialty tools to diagnose and repair system problems. These tools are necessary to accurately troubleshoot and repair malfunctioning systems.
However, there is a set of tools technicians should always use to help guide them in the right direction when troubleshooting: their senses. They will always need specialized tools to accurately diagnose a problem, but with the use of their senses, they can be more effective troubleshooters.