All posts by Jestine Yong

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  Completed Another Basic Electronics Repair Course

  Just completed another Basic Electronics Repair Course for 6 participants. For your info this was my first training class since my country were under lockdown early May this year. For more info about this training course, please...

  • Posted October 22, 2021
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  Examining And Testing A Small Universal FDC To USB Adapter

              A few months ago I bought a very small but almost complete 26 pins Floppy Disk to USB Controller interface (FDC to USB). It was originally designed to work with a...

  • Posted October 13, 2021
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  A Shorted Surround Sound Amplifier Repaired

  A friend of mine who is a repair technician contacted me about a surround sound amplifier that he encountered but he does not have any kind of repair experience in such devices. The technician went further in...

  • Posted October 13, 2021
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  Insects/Mosquitoes E-killer Saved From Waste Dump

              This Hongjian mosquitoes killer was brought to me by a neighbour with complaint of not working. Few months ago, it was repaired changing LEDs only. Now back on my work bench....

  • Posted October 13, 2021
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  Obtaining EEprom Bios Firmware For Deadflashed LG GDR8163B DVD-ROM Drive

                    A few months ago my friend Marco brought me two LG GDR8163B DVD-ROM drives. One still working and the other one he had deadflashed over the Pata/IDE port...

  • Posted October 6, 2021
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  A Missing Part In A Turkish Made Welding Machine Repaired

  A welding technician walked into my shop carrying his welding machine and a capacitor. With a smile on his face, he explained that this machine stopped working while he was welding and when he carried the machine...

  • Posted October 6, 2021
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  Makita Charger Repair

              I got this dead charger from another repair shop in town that was not successful in getting this charger fixed. The guy explained that he opened the device and looked for...

  • Posted October 6, 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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