Soviet iron is not new, even very, our mothers and grandmothers used such, that's braid at the base and shabby.
Unscrew the screw back cover, remove the cover.
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Remember where they had been bolted onto the wire, unscrew them, we clean to a shine, for a device of this age copper wires are usually black.
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Then push through the wire in its place through a special elastic band, you can tie a knot, if it fits, but you can like the picture below, the wires connect, fasten them as they were.
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Light bulb if it is intact, too, put in place, close the lid and turn the screw. Now the technology is working and can work even 30 years old.
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