Repair Shops
ATKdrones(Salt Lake City, UT)
UAV Repair Shop(New Brighton, MN)
US Drone Repair(Fort Bragg, CA)
Got this from phantomhelp.com
If you have a Drone Plus in your area they can do it.
Not much to do, except visual inspection, and making sure the motors are clean and spinning freely. I am in the Tampa area BTW.