[header] How to discharge a capacitor [title] Learn and use proper techniques and equipment for working on live electrical equipment. [step] Don't let your unprotected hands near anything involved. [title] Disconnect the device with the capacitor from electric current. 
[step] Alternating current will flow through a capacitor until the source of the current is removed. That current can add to the shock you'll get if you mishandle the capacitor, and may keep recharging it.