All posts tagged "Power Adapter Repair"

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  Repair of a switching power adapter without any switching controller chip!!

                Nowadays most switching regulators are controlled by some kind of Pulse Width Modulated (…GREEN) controller IC. But here’s an example without any controller chip. The adapter is a SUNNY 12Volt...

  • Posted May 2, 2015
  • 21
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  Repair of Fuyuang 55V 250VA Li-ion charger

                      A not working (of course) LI-ION charger was brought to me for an inspection. And someone probably shorted this charger because they assumably changed the in and...

  • Posted March 24, 2015
  • 23
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  Voltage Testing Points Of Mobile Charger

                  Today’s topic is about voltage test points (TP) in Mobile Phone Charger. The below pictures are the marking of the components:   First connect the charger to the Main...

  • Posted August 18, 2014
  • 19