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All posts by Jestine Yong

  • intercom repair
    FARFISA ART-482/1 door entry intercom repair

                    In the building where I live, among the various installed systems therein, there is a Farfisa door entry intercom. The system was put in operation from the beginning of...

    • Posted October 7, 2015
    • 36
  • 3d printer repair
    3D Printer Repaired

                  A workmate of mine teaches 3D printing courses. In the classroom he has 3 set up for use with the students. At home he has 2 for personal use and...

    • Posted October 7, 2015
    • 9
  • SPEAKER PCB REPAIR
    Philips MMS 430 Speaker Volume Control Broken PCB Replaced

                    These speakers are also been repaired by me earlier for the same problem but I have received this speakers again for the same problem.  Earlier I have joined the...

    • Posted October 5, 2015
    • 50
  • hp 3030 repair
    HP LaserJet 3030 – paper jammed

                  Today I got a call from a company and they have a HP LaserJet 3030 MFP who will not print and all the time eat the paper. I went to the...

    • Posted October 5, 2015
    • 9
  • electronics courses
    Completed One to One Coaching In Electronics Repair

                  Just completed today a one to one coaching for a participant in the Basic Electronics Troubleshooting and Repairing Course. If you want to know more about the electronics repair training...

    • Posted October 2, 2015
    • 5
  • Tektronix 2440 Oscilloscope Repaired
    Tektronix 2440 Oscilloscope Repaired- Part 3

                Here is the part 2 article: https://www.jestineyong.com/tektronix-2440-oscilloscope-repaired-part-2/ Today I started with Calibrating the 500MS/s Tektronix 2440 Memory Oscilloscope. Something that was easier then I first anticipated. Mainly because it is a pleasure...

    • Posted September 30, 2015
    • 30
  • tektronix scope repair
    Tektronix 2440 Oscilloscope Repaired- Part 2

                After my last article on a Tektronix 2440 Oscilloscope Repair was published: https://www.jestineyong.com/tektronix-2440-oscilloscope-repair/ That had a Big Short Circuiting (Low Voltage) Power Supply that blew up the Wall Outlet Main Power...

    • Posted September 30, 2015
    • 19
  • amplifier repair
    KONIG PA 10000 (2 x 500Watt) amplifier, no output in one channel repaired

                  This amplifier was given to me for repair after an unsuccessful repair intervention of another technician, who unfortunately left permanent traces of vandalism in its PCB trying to repair it...

    • Posted September 28, 2015
    • 24
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