Don't Miss

All posts by Jestine Yong

  • Fast and Slow Blow Fuse

    SMPS usually use slow blow fuse and if you replace it with a fast blow fuse (with the same ampere rating) chances is high the fuse will blow again. It can blow immediately or after using the...

    • Posted April 25, 2012
    • 8
  • Horrible Customer Service

    I''ve got an email comment from one of my customers (ERG member) about the horrible customer service that he had with Partstore.com. Here is the email: Hello Jestine, I want to share with you and fellow technicians...

    • Posted April 24, 2012
    • 3
  • About Waveforms In Equipment

    When you perform the electronics troubleshooting work, having a service manual or schematic diagram is an added advantage. The sample waveforms listed in the manual could quickly helps you to pin point the fault fast. Of course...

    • Posted April 23, 2012
    • 8
  • Electronics Repair FAQ- Part 28

    Please click HERE to read electronics repair FAQ part 28. Likes(0)Dislikes(0)

    • Posted April 22, 2012
    • 0
  • How Come There Are So Many Optoisolator ICs In SMPS?

    It is common to see 1 or 2 optoisolator ICs in a switch more power supply board (SMPS) but what about 3 or even 4 opto ICs in the power supply board? As far as I know...

    • Posted April 21, 2012
    • 1
  • Power LED Does Not Light Up

    When you see an equipment where the power LED does not light up don't quickly decide that it was the power section problem. You have to know that nowadays the consumer electronics equipment power LED signal is...

    • Posted April 19, 2012
    • 4
  • SMD Transistor WU1

    If you repair SMD circuit board and found a smal SMD  transistor WU1, then you should expect that there is another part number that you should search for. The part number is DTA144 which is a PNP...

    • Posted April 18, 2012
    • 3
  • Taking Good Care Of Your Health

    I know that I should not have posted this topic in my electronics repair blog but I have to do it to let you know health is very important.  The reason I write this post is to...

    • Posted April 17, 2012
    • 7
Open

Close