The alternator of a car is responsible for charging the car battery. Someone who repairs a broken alternator ensures that the alternator works again and continues to keep the car battery charged.
The Repairer of Reputations was created in 1895.
If you have an accident, or your bike breaks down an Approved Repairer will contact you to arrange repairs of your vehicle
a glazier.
repair
A Technician
For as long as the repairer wishes... there is no specified time
A tinker is a repairer of pots and pans. Today, someone who will repair many things. "He likes to tinker."
by calling piano repairer
Shoe repairer
Steeplejack Chimney sweep
a gun repairer
i don't think there is a technical name for a repairer of drums i know the guitar maker/repairer is a "Lutherian" "a drum technician" maybe.