Things You'll Need
Instructions
Shine your work light onto the tool and examine closely. Are all parts present? If not, you will need to find a replacements -- either a modern version, a replacement from another nonworking antique, or a "new old stock" item from a company that sells parts.
Examine the tool's electrical cord. If the cord is in bad shape and wire is exposed, replace. If not properly connected inside the tool, re-solder it into place (if it was soldered on) or wind it around the cord connection post and tighten the post or screw. Carefully inspect the plug as well. Make sure the bare wire ends are screwed into place, if it is the screw-style plug end. Be sure bare wires are not touching any metal areas other than the post they connect to. Unscrew the posts and reattach the wires if necessary.
Clean off any dust or grime using the small brush and a rag. Open the tool if it is screwed together. Remove the screws with the flathead screwdriver, using care not to jar loose any inner workings. Blow any dirt off of the parts, and use the brush if necessary. Reconnect any loose electrical wires on the switch or elsewhere. Reassemble the tool when everything looks as though it should function properly. Turn moving parts to ensure they move properly.
Plug the tool in. Engage the switch, if any, and test it out. If still not working, troubleshoot again as above. Replace the cord with a new one (even if temporarily) to see if that solves the problem. If not, it may be the switch or the motor. Inspect the power switch to be sure it is clean inside and that all wires are properly connected. Clean it with the brush and rag if necessary, and reconnect any loose wires. Plug the tool in again.