This comprehensive service repair manual provides detailed instructions for repairing your AVO EA113 ELECTRONIC AVOMETER. It's designed to guide you through the repair process with clarity and precision, ensuring you have the necessary information to complete repairs effectively. The manual covers a wide range of topics, including instrument repairs and spare part identification, safety procedures for handling electrical equipment, detailed specifications and technical information, a breakdown of controls and operation, test facilities and equipment requirements, disassembly and replacement procedures, fault finding and servicing information, electrical testing methods, and a comprehensive circuit description. Benefit from numerous diagrams and illustrations throughout the manual, making it easier to understand complex procedures and visualize components. Enjoy the flexibility of printing all or only the sections you need to reference during your repair process.

The AVO EA113 Electronic AVOMETER, more commonly known simply as the "EA113," was a revolutionary instrument in the realm of electronic testing, introduced by the renowned British company Automatic Coil Winder & Electrical Equipment Co. (AVO). This compact and versatile device, released in the late 1950s, marked a significant advancement in the field of electronics by combining the functions of a voltmeter, ammeter, and ohmmeter into a single, portable unit. Unlike its predecessors, which relied on moving-coil meters and were susceptible to environmental factors, the EA113 utilized a transistorized electronic circuit, providing exceptional accuracy and stability regardless of temperature fluctuations or magnetic fields. This innovation made it an invaluable tool for technicians, engineers, and hobbyists alike, enabling them to make precise measurements across a wide range of electrical parameters with ease. The EA113's design was both practical and user-friendly. Its robust construction housed a clear and legible analog meter face, with multiple ranges selectable through rotary switches. The instrument featured a dedicated input for AC and DC voltage measurements, as well as a separate jack for current measurements. Its versatile functionality extended beyond basic electrical measurements, as the EA113 could also be used for testing transistors, diodes, and other semiconductor devices. This made it a truly comprehensive tool for diagnosing and troubleshooting electronic circuits. The EA113's compact size and lightweight design made it highly portable, facilitating on-site testing and repair in a variety of environments. Its popularity and widespread adoption cemented its place in the history of electronics, serving as a testament to AVO's commitment to innovation and excellence. Although the EA113 is no longer in production, it continues to be admired and sought after by electronics enthusiasts and collectors for its historical significance and enduring performance.