All posts by Jestine Yong

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  Completed The MicroElectronics Repair Level 4 Course

  Just completed the MicroElectronics Troubleshooting and Repair and Microsoldering course for two participants. Both of the participants already completed the level 1, 2 and 3 courses. For more info about the electronics training course, please visit this...

  • Posted May 26, 2023
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  Optonica 20 Watt LED Bar 4000K Repair

                Recently another good friend brought his now defect Optonica led light bar. It was almost brandnew and already defect after only about 10 months of use. And because his warranty...

  • Posted May 20, 2023
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  Loose Contact In Power ON Button Caused Dead Condition In Mr Light Phantom 32

  I request you all to see the following link for knowing the history of this set: https://jestineyong.com/repeated-failure-of-backlight-and-panel-bonding-replacement-in-mr-light-led-tv-phantom-32/ As you might have noticed, this TV seems to be in the habit of visiting me often. My records show...

  • Posted May 20, 2023
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  Saving Computer SMPS – PART 5

                Continuing my efforts to reuse as much Computer SMPS as possible, following two cases are being shared to promote service of such ATX Power Supplies. There is a general tendency...

  • Posted May 20, 2023
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  Repaired Desktop Computer ATX SMPS

  Received Desktop computer for not working problem. Connected computer on my desk and turned it ON. No sign of life – no power, which straight indicating problem with power unit. Removed power supply from the PC. on...

  • Posted May 20, 2023
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  Completed Another Advanced Repair level 2 Course

  Completed today another Advanced Electronics Repair Level 2 course for 3 participants. Below are the photos taken during the 3 days repair course: Likes(16)Dislikes(0)

  • Posted May 19, 2023
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  Panasonic Hi-Fi Setup No Power Repaired

  A customer sent to me his Panasonic Hi-Fi set up with no power symptom. As usual, I did not see any problems (visual inspection) in the power supply and mainboard. In certain cases, you could see darkened...

  • Posted May 13, 2023
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  Saving Computer SMPS – PART 4

  As you might already know, I have a lot of interest in restoring computer ATX power supply, inspired by Jestine Yong’s famous book on SMPS repair. I do this as a totally free service to the hospital...

  • Posted May 13, 2023
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