vintage printed circuit board

machine electronics vehicle yellow hand guitar electronic circuit board components assembled integrated circuits resistors capacitors vintage printed circuit board motherboard electronic pcb electronics engineering hardware electrical component industry transistor repair data processor connection resistor capacitor diode ohm radio voltage mainboard electricity semiconductor technology chip one-copper-layer printed-wiring-board electronic-packaging technical-service repairing phenolic-paper electronic-lab fix service electrical-properties through-hole-construction workshop link analog equipment ceramic-capacitor maintenance electronic-industry vintage retro wax