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All posts by Jestine Yong

  • 2212kv cap breakdown when under full load
    221 2KV high voltage cap broke down when under full load

    The complaint of Singer 21 Inch CRT TV was dim display. The brightness control already adjusted to maximum and yet the display was still dim. There are few reasons why the CRT TV can get dim: PC...

    • Posted May 15, 2020
    • 10
  • fm portable audio repair
    Damaged Charging Socket Replaced In Portronics Puresound

                        Model and make: Portronics Puresound USB/FM portable audio Complaint reported: Charging socket damaged. Troubleshooting and rectification done: Opened the set by removing the screws hidden under the...

    • Posted May 15, 2020
    • 12
  • benq lcd monitor repair
    Troubleshooting And Repairing BENQ LCD Monitor (With Video)

                      In my very small workshop, one corner is assigned as my office space. A bench with a desktop computer serves my needs as well as a wall mounted...

    • Posted May 12, 2020
    • 20
  • c300 amplifier repair
    Broken Diode And Shorted Tantalum Capacitor Found In NAD C300 Amplifier

    Those of you who have not read my previous article (September, 2017) on this amp, may please read : https://jestineyong.com/shorted-mosfets-and-bad-capacitors-in-amplifier/ My friend brought this set back to me (May, 2019) stating that the power on LED was...

    • Posted May 12, 2020
    • 9
  • 6 power mosfet shorted
    Six Power Mosfets Shorted and…..

    this Link.A severe damaged welding machine repaired. Model: Zika I-200 My cousin brought his machine for repair. I have seen this machine before but this time the damage was very severe. Take a look. It was completely dead....

    • Posted May 6, 2020
    • 18
  • Jerking And Vanishing OSD In Sharp 21RK21N CRT TV
    Jerking And Vanishing OSD In Sharp 21RK21N CRT TV

                    This CRT TV was brought to me in dead condition. At the time of bringing, and even opening and cleaning in front of the customer, who helped me move...

    • Posted May 6, 2020
    • 14
  • singer active speaker repair
    Shorted Transistors In Singer Active Speaker

    The complaint of this Singer active speaker was unclear sound and low sound output. This problem can be due to the power supply producing improper dc output voltages or the main Amp circuit fault. Since we can’t...

    • Posted May 6, 2020
    • 7
  • Reverse Engineering a Clock Pulse Giver

    Over the years my professional watchmaker friend brought me several of his professional devices when they stopped working or when he needed some advice. And I am always curious about the electronic products he brings me to...

    • Posted April 29, 2020
    • 22
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