Detection Of Electronic Card Failures Using The Analog Signature Analysis Technique

摘要

To diagnose failures in devices that use electronic cards, PCB and consequently to repair their damages is more and more expensive if it is taken into account that the information of plans, diagrams, manuals, spare parts, training and tools are limited in repair shops and, added to this, the myriad of components and cards that exist. This paper shares a diagnostic technique that allows, by comparing figures or curves of voltage and current signals that are injected to suspicious cards or components with defects, to compare them with the responses that generate cards or equal, and then analyze them and make decisions based on the characterization of their responses. This technique is already being used but it is not widespread among repair technicians who use diagnostic methods that are based on the basic concepts of electronics and knowledge about the components. This technique allows the cards to be reused as long as the faults are found and they can be repaired with the spare parts available in the country and in this way recycle the electric-electronic items that deteriorate.