troubleshooter
                        
                            - noun (n)
                        
                        
                            
                    
                Meaning: fixer, repair person
    Synonyms: 
                        maintenance person
                                mender
                                mr. fixit
                                service person
                                technician
            
                                                                                Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
