All posts tagged "power supply repair"

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  A Serious Mistake In 12 Volts Power Supply Repaired

  A friend of mine and a fashion store owner brought me three power supplies for repair. He said the electrician tried to fix something in his store but instead he damaged these three LED power supplies there....

  • Posted December 3, 2021
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  5V DC Power Supply Module Repaired

                A friend of mine who is hobbyist and sometime he use to do some house hold repair job also. He sent me one power supply module for repair used in...

  • Posted November 4, 2021
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  Equivalent Series Resistor (ESR) Value in Electrolytic Capacitors 

                Equivalent series resistor (ESR) in electrolytic capacitor is an interesting topic. Electrolytic capacitors can be found in many circuits in a circuit board but in today’s article I’m going to...

  • Posted September 29, 2021
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  What’s The Purpose Of Two Different Type Of Capacitors In Parallel?

  Repairing Switch Mode Power Supplies (SMPS) can be much fun, interesting but sometimes you may get frustrated too if it can’t be repaired. There are simple and complex designs of SMPS in the market. Problems of SMPS...

  • Posted September 16, 2021
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  Power Supply For A Pool Lights Repaired

              My brother brought me this power supply for repair. It was a power supply for lights in his swimming pool. He has a villa for rent and in this villa he...

  • Posted April 26, 2021
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  SMPS Of Running Display Failed Due To Defective PWM 3842 IC

                  This SMPS was brought to me by my Techie Friend, who could not find time to troubleshoot this due to heavy load of work. This SMPS was of the...

  • Posted October 27, 2020
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  Replacing Working Components In Switch Mode Power Supply

              The OLAN 22″LCD TV came in with the complaint of no power symptom. Once the cover was removed I saw four circuit boards: Inverter Board Power Supply Board Main board USB...

  • Posted March 23, 2020
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  Main SMPS Transformer Overheated

                      A client sent me his keyboard’s power supply via postage to see if I could repair it. It is from a very old Roland Keyboard.   The...

  • Posted May 21, 2019
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