All posts by Jestine Yong

• Transformer in SMPS Use AC or DC to Work?

  Just want to ask the transformer use for SMPS is use AC or DC? Because what I know is that all transformer use AC to function. It’s confuse me, when I read book, it’s use MOSFET/IC to...

  • Posted August 6, 2013
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  “Double Insulated” SMPS!

                  We have seen many reports of people experiencing small electrical shocks while handling peripheral equipment such as WiFi routers, modems, CD players etc… This problem usually comes from unearthed...

  • Posted August 5, 2013
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• Focus Problem In CRT TV

  I’m having some difficulty in repairing a 21″ sharp tv. It has focus problem so making it show blurred images. I have tried to adjust the focus knot of the flyback transformer but it remains the same....

  • Posted August 3, 2013
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  A Shorted Facial Steamer Repaired

  A lady came to my workshop asking me if I repair facial steamers. It was shorted out facial steamer. My thoughts, if it was shorted out, then there must be a printed circuit on it that needed...

  • Posted August 1, 2013
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• Video: Flat Ribbon Soldering

  Thanks to Shihab Kably for recommending this video on soldering flat ribbon Likes(1)Dislikes(0)

  • Posted July 31, 2013
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  A Computer Speaker System Repaired

  A TomMade computer speaker system was brought to my shop by a customer who explained that this speaker system do not produced any sound. I hooked it up to my desk top and indeed, I could not...

  • Posted July 31, 2013
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• Video- Repairing a Minor Crack On A Circuit Board PCB.

  Thanks to Beh for recommending this video Likes(1)Dislikes(0)

  • Posted July 30, 2013
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  Leader LTC-907 Transistor Tester

  Do you still remember last two weeks I blog about the special 3 pins probe share by one of my ERG members? If not then you can read from the below link again: https://www.jestineyong.com/leader-lp-11y-in-circuit-test-probe/ He recently sent...

  • Posted July 30, 2013
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