To feed a stable driving voltage to a plurality of inspected apparatuses by means of a simple structure in delivery inspection.

In the inspection device for a tuner, a voltage supply line and a ground line are arranged so that a voltage drop in the voltage supply line, through which the driving voltage is fed to a plurality of tuners from a power source device 1, and the ground line lies within an allowable range of a rated voltage, while first and second detection points for controlling an output voltage from the power source device 1 are arranged in the voltage supply line and the ground line respectively, so that a proper inspection direct current voltage can be supplied from the power source device 1 to a plurality of tuners 20-1-20-n.