Electrical and electronics installers and repairers typically do the following:

• Discuss problems and requirements with customers
• Inspect and test equipment
• Reproduce, isolate, and diagnose problems
• Disassemble equipment as necessary to access problematic components
• Clean, repair, and replace components
• Reassemble and test equipment after repairs
• Keep records of repairs, tests, parts, and labor hours

Modern manufacturing plants and transportation systems use a large amount of electrical and electronics equipment, from assembly line motors to sonar systems. Electrical and electronics installers and repairers fix and maintain these complex pieces of equipment.

Because automated electronic control systems are becoming more complex, repairers use software programs and testing equipment to diagnose malfunctions. Among their diagnostic tools are multimeters—which measure voltage, current, and resistance—and advanced multimeters, which measure the capacitance, inductance, and current gain of transistors.

Repairers also use signal generators, which provide test signals, and oscilloscopes, which display signals graphically. In addition, repairers often use hand tools such as pliers, screwdrivers, and wrenches to replace faulty parts and adjust equipment.

The following are examples of types of electrical and electronics installers and repairers:

Commercial and industrial electrical and electronics equipment repairers adjust, test, repair, or install electronic equipment, such as industrial controls, transmitters, and antennas.

Electric motor, power tool, and related repairers—such as armature winders, generator mechanics, and electric golf cart repairers—specialize in installing, maintaining, and repairing electric motors, wiring, or switches.

Electrical and electronics installers and repairers of transportation equipment install, adjust, or maintain mobile communication equipment, including sound, sonar, security, navigation, and surveillance systems on trains, watercraft, or other vehicles.

Electronic equipment installers and repairers of motor vehicles install, diagnose, and repair sound, security, and navigation equipment in motor vehicles. These installers and repairers work with a range of complex electronic equipment, including digital audio and video players, navigation systems, and passive and active security systems.

Powerhouse, substation, and relay electrical and electronics repairers inspect, test, maintain, or repair electrical equipment used in generating stations, substations, and in-service relays. These workers also may be known as powerhouse electricians, relay technicians, or power transformer repairers.