All posts by Jestine Yong

• 
  Completed Another Basic Electronics Level 1 Course

  Completed today another Basic Electronics Repair Level 1 Course for 5 participants. Below are the photos taken during the 3 days course: Likes(24)Dislikes(0)

  • Posted October 10, 2025
  • 10
• 
  Kenwood Amplifier Model KAC-629S – Dead but Now Repaired!

  I recently received a Kenwood amplifier (model KAC-629S) that was completely dead. The owner mentioned that another technician had already looked at it and replaced a blown 25A fuse. The amplifier worked for a few days before...

  • Posted October 4, 2025
  • 18
• 
  Malfunction Of LM324 SMD IC Caused No Output In V-GUARD Voltage Stabilizer Model VG50

          This voltage stabilizer was brought to me by my neighbor saying that it was getting on but no output came even after the three minutes’ delay. I opened the unit and found the...

  • Posted October 4, 2025
  • 10
• 
  Philips AQUATOUCH AT620 Shaver Repair

  Received Philips Aquatouch AT620 shaver not turning ON. Connected the Device on Power adaptor it shows charging indicator but when pressing on off switch it does not show any sign of working. For further inspection I disassembled...

  • Posted October 4, 2025
  • 12
• 
  Overboard Servicing Done In AKAI Cassette Deck Model GXC-709D

          This Tape Deck was brought by a regular customer with the complaint that it was stopping after a few minutes play. This deck was taken to another technician near his house, as I...

  • Posted October 4, 2025
  • 14
• 
  Completed Another Basic Electronics Repair Level 1 Course

  Completed today the Basic Electronics repair course for 6 participants from Oman. Below are the photos taken during the 3 days course: Likes(9)Dislikes(0)

  • Posted October 3, 2025
  • 10
• 
  How To Test Any Mosfet Using LED

              Internal diode is for to prevent reverse current which becomes reverse-biased and blocks current when the polarity of the applied voltage is reversed. Sharing Easiest way to test MOSFET using LED...

  • Posted September 28, 2025
  • 20
• 
  UMAX 450W ATX SMPS Repaired

            Received PC SMPS for Repair Stating Dead (not working). Connected the SMPS to Series Bulb Board for testing. It is not showing any shorting.  For further inspection I removed circuit board out...

  • Posted September 28, 2025
  • 17