works in electronic services

integrated-circuit signal-test ohmmeter multimeter defective-semiconductor alternating-current analyzing assistance chip circuit-board diode direct-current electrical-test-equipment electronic electronic-service electronic-technician electronics electronics-industry engineering equipment expertise industrial industry instrument-measurement lab machine maintenance measuring mechanic occupation ohm open-circuit probes professional rectification repairing resistance semiconductor semiconductor-material service short-circuit silicon-diodes support technician technology test-lab threshold-voltage tool work