All posts by Jestine Yong

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  Tweeter Speaker Repaired

              The complaint of this tweeter speaker was that it does not have sound. Before you can see the internal tweeter  coil, you need to carefully remove the external speaker net and...

  • Posted September 18, 2015
  • 4
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  ASUS PC Repaired

                A co-worker asked for my help because his PC (ASUS P5LD2-VM) can’t be turned On. The cover of the cabinet was taken out, and the voltages (+5 volts) of PSON and...

  • Posted September 18, 2015
  • 13
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  How to Measure The Voltage Rating Of A Zener Diode

                  In this document, I show you how to measure the voltage rating of a zener diode, when there is no labeling on or if it is unreadable. Be carefully, because...

  • Posted September 15, 2015
  • 38
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  8GB Flash Drive Repaired

                    A very close friend, brought to me a Flash 8 Giga Bytes, crying, which had lost all data in it. I tested the flash drive by connecting it...

  • Posted September 15, 2015
  • 10
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  Tektronix 2440 Oscilloscope Repaired

                My good friend and old colleague Frans brought in today a Dual Channel Tektronix 2440 Oscilloscope that short circuited on the Wall Outlet by also destroying the internal 4A 230V...

  • Posted September 12, 2015
  • 25
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  No Sound In Mitashi SubWoofer Repaired

                  The complaint of this Mitashi Sub Woofer was no sound but have power. As usual, in order to repair the set, one need to open up the cover for...

  • Posted September 12, 2015
  • 3
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  National Panasonic RX5100 Radio Cassette Repaired

  One of my friends brought this set to me mentioning that the performance of the set has become bad and the Radio is very weak.  I switched it on and noticed that the complaint was genuine. (Please...

  • Posted September 12, 2015
  • 9
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  Display Problem In LCD TV Repaired

                  The complaint of this Singer LCD TV was distorted display with a white vertical line across the screen. From experience, whenever I see distorted display in the screen the...

  • Posted September 9, 2015
  • 10