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All posts by Jestine Yong

  • eltectvrepairing
    20 inch TRC TV repaired

                    I went to my friend’s house for a visit and he asked me to take a look at his old TV which was not working properly. It was an old...

    • Posted May 6, 2015
    • 11
  • power adapter repair
    Repair of a switching power adapter without any switching controller chip!!

                  Nowadays most switching regulators are controlled by some kind of Pulse Width Modulated (…GREEN) controller IC. But here’s an example without any controller chip. The adapter is a SUNNY 12Volt...

    • Posted May 2, 2015
    • 21
  • bios eprom
    About Computers and Boot E/Proms (BIOS)

                    Many of us about 40 will remember the SF Blake 7 series (British-TV). (Otherwise the whole series probably is for sale at your local Store on DVD – I...

    • Posted May 2, 2015
    • 6
  • Completed Another Advanced Electronics Repair Course

    Just completed today the Advanced Electronics Repair course for 4 participants. Check out the photos below: For more information about the electronics repair course in Malaysia do visit the link HERE. Likes(14)Dislikes(0)

    • Posted April 29, 2015
    • 2
  • laserjet repairs
    No Power In HP Laserjet 3030 Repaired

                    My customer sent to me his HP LaserJet 3030 printer which won’t startup (no power). When I asked what caused the problem, he told me there was some problem in...

    • Posted April 28, 2015
    • 24
  • harmonics and distortion
    Harmonics and Distortion

                    Foreword: As I enjoy every single article from this blog and don’t do much repair works anymore (except for domestic purposes!) I would like to contribute with some of...

    • Posted April 28, 2015
    • 17
  • led monitor repair
    1.8V Voltage Regulator IC Problem In LED Monitor

                    The complaint was no power. This LED Monitor uses an external power adapter and the output voltage was tested good (19 volt DC). Since the power adapter was tested...

    • Posted April 24, 2015
    • 42
  • atx power supply casing
    300 Watt ATX Power Supply Fixed

                        Today I finally fixed a Power Supply (For Home or Office use !) Model: SS-300FS Active PFC that I had looked at months earlier but couldn’t fix....

    • Posted April 24, 2015
    • 20
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