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All posts by Jestine Yong

  • tcon voltage test points
    Multiple DC Voltage Testing Points of Mainboard

    If you are repairing many same model of mainboard, there are plenty of ways to troubleshoot it. One of the ways is to power On the device and measure the DC voltages on various points of the...

    • Posted November 27, 2021
    • 24
  • Easy Plasma Tv Repair
    Easy Plasma Tv Repair

    This Philip Plasma tv was brought to my home for repair from my church. The church use it to receive Sunday service from h/qr church through satellite service. It shut down to standby mode when the power ...

    • Posted November 27, 2021
    • 5
  • electronic repair course malaysia
    Completed The Basic And Advanced Repair Course

    Just completed today the 6 days Basic and Advanced Electronics Troubleshooting Repair course for 7 participants. Below are the photos and videos taken during the 6 days course (22nd to 27th November 2021). For more information about...

    • Posted November 27, 2021
    • 8
  • testing resistor on board
    Should You Test Resistors OnBoard Or OffBoard?

    I often got technical questions from my training students and one of the most common questions was about whether to test or check resistors onboard or offboard. My answer to them was it depends. For your information,...

    • Posted November 20, 2021
    • 33
  • Lead-Acid Battery Powered Table Lamp Modified To Use Lithium-ion Battery
    Lead-Acid Battery Powered Table Lamp Modified To Use Lithium-ion Battery

                      This rechargeable table lamp my family use to light up kitchen whenever there’s power failure. It uses lead acid battery for power, which I usually change whenever battery...

    • Posted November 20, 2021
    • 9
  • vent damper repair
    Vent Damper Repair (switch replacement)

                My replacement gas heating system included a vent damper that closes the flu when the gas is not burning to save energy; but it threw a boiler error after just 2...

    • Posted November 20, 2021
    • 4
  • electronics repair course
    Completed The Higher Advanced Electronics Repair Course

    Just completed today the Higher Advanced Electronics Repair course (level 3) for one participant. He already attended the Advanced Electronics Repair course (Level 2) last year. For more information about the electronics repair courses, please click here....

    • Posted November 19, 2021
    • 10
  • power supply fan modified
    A Dead Lontor Rechargeable Water Standing Fan Power Supply Modified

                This 12V fan was brought to my work shop with complaint of not working. This fan uses water for cooling system. Picture below: I did check and found smps, mainboard bad,...

    • Posted November 10, 2021
    • 7
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