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Basic Guides to Troubleshoot your Circuit

Learn how to diagnose, repair or replace, and verify your circuit with the help of basic tools and essential knowledge. Discover common errors and mistakes to avoid for successful troubleshooting.

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Basic Guides to Troubleshoot your Circuit

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  1. Basic Guides toTroubleshootyourCircuit Mohamad Taib bin Miskon

  2. Contents • Tools • Knowledge/skills • Diagnose, repair/replace, verify • Common errors/mistakes

  3. Basic tools • Multimeter (analog/digital) • Test pen • Solder, Soldering iron, sucker etc • Helping hand

  4. Knowledge- measurement • Measuring voltage n current • Measuring signal using Oscilloscope

  5. Knowledge- circuit operation • Understanding your circuit – timer555

  6. Knowledge- circuit operation • Understanding your circuit – relay

  7. Knowledge- circuit operation • Understanding your circuit – ADC

  8. Knowledge- circuit operation • Understanding your circuit – PIC

  9. Knowledge- circuit operation • Understanding your circuit – Regulator

  10. Knowledge- circuit operation • Understanding your circuit – I/O

  11. Knowledge- circuit operation • Understanding your circuit – I/O

  12. Knowing your system • What is your system? Block diagram? flow? • What is your i/o? signal? • Your program?(if any) • Your load?

  13. Troubleshooting • Diagnose – what is the problem? • Symptoms? Hardware? Software/firmware? • output? input? Continuity test? • Power source?

  14. Troubleshooting • Hardware troubleshooting: • Voltage check • Continuity check • Signal check

  15. Troubleshooting • Hardware troubleshooting: Examples

  16. Troubleshooting • Hardware troubleshooting: Examples

  17. Troubleshooting • Hardware troubleshooting: Examples

  18. Troubleshooting • Hardware troubleshooting: Examples

  19. Troubleshooting • Software troubleshooting: • Blink test • Program check • Software setting etc.

  20. Troubleshooting • Repair – replace the faulty component • Determining eq components? • Reading datasheet

  21. Troubleshooting • Verify • Does your circuit operate/responds accordingly?

  22. Common mistakes • PCB trace not connected • improper grounding • VDD, VSS on PIC circuit • Sensor-to-switch replacement • Power source- over/under voltage

  23. Common mistakes • Improper load selection • Improper circuit combination • Wrong polarity • IC not programmed • Wrong compiler

  24. Tq for listening, Any Question??

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