Dog shows typically have a scissor guy there that can do it for you. Dog show go on all year long so look on line for one near you and find out if there will be a scissor guy there. They'll have a tent set up somewhere selling scissors and clippers to the dog people. Oh and make sure you call them in advanced to make sure they bring the tools to do it with.
Its kind of convenient for me because my mom shows dogs so I just give them to her and she puts them in her purse for the next show she happens to go to.
Also, if you have a Horse Expo near you sometimes there will be a clipper guy there selling boddy clippers and sharpening blades.
Ask your local tack stores too. Sometimes they can do it or they have a guy they send them out to.