TS 12404

TS 12404 is a occupational standard that defines the radio and television repairer profession and addresses the classification of people who perform this work, together with the equipment they use and the knowledge, skills, and behaviours expected of them. In general technical terms, this field covers electronics service work on broadcast receivers and related audio-visual devices, where fault finding can involve power supplies, signal paths, controls, connectors, and worn components.

Professional scope and technical role

Radio and television repair is a service discipline in which a malfunction may stem not from a single part alone, but from the supply stage, signal processing, interconnections, user settings, or degraded components. Practitioners typically need to identify faults, select suitable test tools, interpret the function of circuit blocks, and verify operation after repair. The focus of this standard is the definition and classification of the profession, along with the knowledge and behavioural framework required for the job; it is not a detailed technical specification for the design of the devices themselves.

Equipment, methods, and service context

In this kind of work, general service practice commonly involves tools such as multimeters, oscilloscopes, soldering equipment, signal-tracing instruments, and suitable replacement parts. Because receiver, tuner, audio amplification, video processing, and power-supply subsystems are interconnected in radio and television technology, diagnosis often requires a systematic check sequence. From a professional standpoint, accuracy in measurement, care for electronic components, ESD awareness, and responsible handling of customer equipment are important behaviours. The value of the standard lies in establishing a shared professional language and clarifying the expected competence profile for the trade.