Ask Mr. Fix-It

Repairing a desk lamp can be tricky. Remove the jar and base, taking care to avoid the blades.  Turn the drive stud one quarter turn counter-clockwise, and disconnect the seal.   Discard any wires or pieces that do not seem essential. Randomly place black electrical tape around various metal parts.  Repeatedly press the Multispeed switch buttons. Now, replace the jar and base. 

Screw in a new light bulb, and you're ready to go!