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From the consumption assessment for detecting radar spare parts of the CMA Meteorological Observation Center from 2006 to 2015 and the fault cases acquired from nationwide CINRAD/SA radar stations from 2007 to 2015 by the project team, it is found that the transmitter failure rate is second only to the servo system, which is closely related to the highvoltage work environment for a long time, seriously affecting the observation, being very difficult to deal with. This paper summarizes the methods to solve the highvoltage faults by gathering the maintenance experiences from the nationwide CINRAD/SA radar stations, binding the parameter characteristics of the related components and analyzing common highvoltage faults. Two typical highvoltage fault cases are studied to provide reference for stations.