Advanced International Journal for Research

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Volume 7 Issue 5
September-October 2026

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A Systematic Framework for Fault Diagnosis and Troubleshooting in Electronics Engineering Laboratories: Methods, Validation, and Practical Applications

Author(s) Mr. Dwarakeesh S
Country India
Abstract Electronics engineering laboratories support the development of practical competence in circuit construction, measurement, interpretation, and fault diagnosis. However, troubleshooting can become inconsistent when students and laboratory personnel rely on trial-and-error component replacement, incomplete documentation, or measurements taken without a defined diagnostic sequence. This paper proposes a systematic, safety-oriented framework for diagnosing and resolving faults in Electronic Devices and Circuits (EDC), digital electronics, and analog electronics laboratories. The framework integrates eight stages: (1) symptom definition, (2) safety and visual inspection, (3) functional decomposition, (4) hypothesis generation, (5) measurement planning, (6) controlled testing, (7) corrective action, and (8) post-repair verification and documentation. Its practical use is illustrated through representative fault scenarios involving power-supply instability, semiconductor biasing, logic trainer kits, and analog signal-conditioning circuits. A set of performance indicators is also defined to support future empirical evaluation, including diagnostic time, first-pass resolution, recurrence rate, and completeness of maintenance records. The paper is a framework-development contribution rather than a report of a completed controlled experiment; therefore, it does not claim measured improvements in student performance or equipment reliability. The proposed framework provides a reproducible basis for laboratory troubleshooting practice and future validation across engineering institutions.
Keywords electronics laboratory; fault diagnosis; troubleshooting; engineering education; electronic devices and circuits; digital electronics; analog electronics; maintenance documentation
Field Engineering
Published In Volume 7, Issue 5, September-October 2026
Published On 2026-10-13
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E-ISSN 3048-7641
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