All posts by Jestine Yong

• 
  Restoring Mr Light Mr 680V6 Emergency Light

                    This emergency light was brought to me with the complaint that it is dead. After confirming the complaint, I opened the light and dismantled it. On checking the...

  • Posted May 5, 2016
  • 11
• 
  No Power in Samsung LCD TV with Standby light on-Repaired

                      One of my relative brought this LN32C450 to me for repair and told me that the power from the house main had gone and after a little...

  • Posted May 2, 2016
  • 10
• 
  Test pins from PC power supply

                  Today I faced with a “strange” problem, where I had to make some measuring on a car ECU motherboard. There were some pins very close to each other and...

  • Posted May 2, 2016
  • 14
• 
  Q-TEC 500W P/C PSU repair

                    My friend George bought recently this (used) PSU shown below, at a very cheap price, in order for him to use it as a spare PSU for his...

  • Posted April 28, 2016
  • 33
• 
  Water Level Controller BTC L500 Repaired/

                    One of my friends that have a garden brought me this water level controller and asked me why this water controller was not functioning?   But what is...

  • Posted April 28, 2016
  • 32
• 
  Why AC instead of DC and why 50/60 Hz?

                  If you ever asked these questions to yourself, welcome to the club. These two questions are amongst the most frequently asked questions by Electrical/Electronic engineering students. And they are...

  • Posted April 25, 2016
  • 24
• 
  External ADATA HDD Repair

                    This external ADATA HDD Model Nobility NH03 was brought to me and the complaint was never recognized in any PC. First thing done was to check on the...

  • Posted April 25, 2016
  • 17
• 
  ATX PSU Modified Into a Car Battery Charger-Part 3

                  For those readers of my previous article, about that modification shown in two parts here below, https://www.jestineyong.com/atx-psu-modified-into-a-car-battery-charger-part-1/ https://www.jestineyong.com/atx-psu-modified-into-a-car-battery-charger-part-2/ especially for those who asked me specific information in order for...

  • Posted April 22, 2016
  • 23