circuit board with soldered radio components, resistors, transistors, diodes, inductors and capacitors. taken in close-up

workshop working work wire white transistors transistor tool tin temperature technology soldered signal service semiconductor science resistors resistor repairing radio project progress power old manufacturing learning labor innovation industry inductors indoors horizontal heat ham futuristic examining equipment engineering employment electricity electrical diodes creativity connection concepts components component communication color closeup circuit capacitors capacitor cable board background amateur accuracy