All posts by Jestine Yong

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  Etech Hot and Cold Water Dispenser Repaired

                The complaint of this Etech hot and cold water dispenser was it has power and the “hot” side can work but the “cold” side was not giving out cold water....

  • Posted October 14, 2015
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  PC Intel D 326 cooling problem solved

              PC Intel D 326 cooling problem I got a call from a local woodworking company. They called me because one of their PC is in some case to slow and they cannot work with...

  • Posted October 14, 2015
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  Polytron LED TV Repaired

                  The complaint of this Polytron LED TV was no picture and no light but there was sound. When I used a torch light to shine at the panel, i could see...

  • Posted October 12, 2015
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  How to Make a Car Fuse Tester and A Quick Voltage Indicator

                In the following five steps you will have a fuse tester and a quick voltage indicator for cars STEP1: What you need: 1- One neon tester for line voltage screw...

  • Posted October 12, 2015
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  Which Resistor to Use with this LED?

                  This is a very simple question, so simple that we usually don’t think too much about it and use whatever we know is working. The voltage might be 5V,...

  • Posted October 9, 2015
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  Tektronix 2440 Oscilloscope Repaired- Part 4

                Here are the previous article: https://www.jestineyong.com/tektronix-2440-oscilloscope-repair/ (Part 1) https://www.jestineyong.com/tektronix-2440-oscilloscope-repaired-part-2/ https://www.jestineyong.com/tektronix-2440-oscilloscope-repaired-part-3/ Today I opened the already completely repaired 2440 Tektronix Oscilloscope again to try and fix some of the remaining FAIL errors....

  • Posted October 9, 2015
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  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
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  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