Latest News

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  NRG GUARD 2000A UPS, NOT STARTING REPAIR

                This UPS came in my hands after an unsuccessful repair attempt from another technician. The symptom it showed right after powering it...

  • October 16, 2015
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  Small Speaker Horn Repair

                  The complaint of this small speaker horn was no sound and it was repaired by someone before. This is a pretty...

  • October 16, 2015
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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...

  • 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...

  • 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...

  • 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:...

  • 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...

  • 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...

  • October 9, 2015
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