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Month: February 2015

Troubleshooting a Switching Power Supply – Part 2

February 27, 2015 Admin 2 Comments Repair, Troubleshooting

In Troubleshooting a Switching Power Supply – Part 1, we had replaced U1 and CR12 based on the analog signatures from the Huntron Tracker showing them as bad. On the rescan, the unit (for practical purposes) passed when compared against our known good reference signatures. There were no catastrophic problems indicated that would make us […]

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Troubleshooting a Switching Power Supply – Part 1

February 17, 2015 Admin 1 Comment Repair, Troubleshooting

We recently received a switching power supply that failed in the field so we took the opportunity to do some troubleshooting and discuss the process here on CircuitBoardProblems.com! Of course, like any good troubleshooters (and according to the PCB Troubleshooting Flowchart) we gave the power supply a good visual inspection. On the bottom side of […]

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Recent Posts

  • Huntron’s Troubleshooting Flowchart
  • Using V/I Signature Patterns to Troubleshoot Bus Circuitry
  • Interesting Addition to Gallery of Bad
  • Look Close then look CLOSER! The Importance of good Circuit Board Inspection.
  • Updates to the Gallery of Bad – Letting the Smoke Out!

Recent Comments

  1. Admin on Finding Bad Electrolytic Capacitors
  2. Garry Niedzielski on Finding Bad Electrolytic Capacitors
  3. Chris Edwards on Look Close then look CLOSER! The Importance of good Circuit Board Inspection.
  4. Admin on Look Close then look CLOSER! The Importance of good Circuit Board Inspection.
  5. Bob Wettermann on Look Close then look CLOSER! The Importance of good Circuit Board Inspection.

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