Expresso machine. my problem is that I cannot find anyone to repair my wega machine. the sensor or

Question

my problem is that I cannot find anyone to repair my wega machine. the sensor or solenoid is warn thus when the tap for water is left on after making an espresso it over flows.I am in putaruru and wish there was a directory in which I could find someone to repair the problem and also the machine has not had a service for a long time prior to owning it.