resistors and circuit board on workshop

red machine electronics vehicle green hand firearm yellow screenshot blue resistors circuit board removed repairing electrical device electronic components resistor repair equipment industry mulimeter ohmmeter ammeter voltmeter ohm resistance motherboard electricity component hardware engineering tool electric fix digital processor closeup transistor probe soldered technician lab technical service professional engineer industrial-electronic machine-part workshop background electric-component-background bias watts electrical-resistance axial-lead-resistors rheostat carbon kilohm megohm maintenance