All posts tagged "power supply repair"

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  How To Test PWM Gate Drive Signal Pulse Using Single Bright LED

            It is difficult to check PWM IC working in SMPS without Oscilloscope. Came across trick for testing which give us indication if PWM generating Gate drive signal pulse or not. Reference Circuit...

  • Posted March 22, 2025
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  Power Supply With Ticking Sound On The Relay Repaired And Maintained

              A friend of mine brought this power supply for repair and the moment I powered it up I heard a continues ticking sound coming from the relay so I took it...

  • Posted September 21, 2024
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  Power Supply Strengthening 

              I recently got a second hand EVGA 500-W1 power supply to replace a power supply I did not trust only to discover that the EVGA 500-W1 has a design flaw as...

  • Posted July 20, 2024
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  A Shorted Board In A Power Supplied Repaired

                An electrician brought this big power supply for repair and seems like he checked with the manufacture about the usual fault in such device so he brought only the main...

  • Posted June 1, 2024
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  A Windows Closing/Opening Power Supply Repaired And Maintained

              A Windows installing technician brought me this dead power supply for repair. The main job of this power supply to provide power to a motor that controls the opening and closing...

  • Posted April 20, 2024
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  A Dead Power Supply Repaired And Maintained

              My cousin brought this power supply for repair. He said that this power supply is used to power up an electrical stove and suddenly they heard a popping sound and the...

  • Posted November 12, 2023
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  A Shorted Power Supply Was Brought Back To Life. Model: CH-600-12

  A store owner and a friend of mine brought this power supply for repair. He said that it just stopped working for some reason. He wanted it as soon as possible so let the repair begins. This...

  • Posted August 26, 2023
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  Open SMPS Transformer Hand-Wound In Mobile Charger TC-70

              For a change, this time it was my own device that became defective. My mobile charger conked off one day and I kept it aside for investigation for a later day....

  • Posted February 24, 2023
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