All posts by Jestine Yong

  • rs232 to ttl converter diagram
    How To Build Your Own RS232 To TTL Converter

                    Hi good peoples! Couple of days ago I got a request to update some sort of firmware on a not so typical microprocessor, the LPC2119 type. As I read...

    • Posted September 26, 2017
    • 9
  • sunwa multimeter repairing and fixing
    Servicing Sunma YX-3600Treb Analogue Multimeter

                            Until I read the importance of using Analogue Multimeters from Jestine Yong, I was using Digital Multimeter for many years, though I had a BPL...

    • Posted September 26, 2017
    • 19
  • electronic timer machine fix
    Electronics Timer Repaired

                        My brother gave me his kitchen timer that had a completely broken buzzer. It still did work as perfect timer but gave no sound anymore after it...

    • Posted September 23, 2017
    • 7
  • hoverboard fixing
    How To Fix A Dead Hoverboard

                      A kid next door came in to my shop and he was a little bit upset. He was carrying a hover board in his hands. There were two...

    • Posted September 23, 2017
    • 6
  • how to replace screen in iphone 6 s plus
    Iphone 6s Plus Screen Replacement

                    Sooner or later, nearly all phone screens get cracked or broken. They suffer a lot of abuse. They get dropped, sat on, pushed up against sharp objects, or lent...

    • Posted September 19, 2017
    • 14
  • 4.7 ohm smd resistor faulty
    Shorted BU3150BF And Open Resistors In Philips DVD Mini Player

                        The complaint of this Philips DVD mini player was no power. Back in the April this year I have posted a similar model with the same problem...

    • Posted September 19, 2017
    • 9
  • smd 73017a ic
    471k MOV Cracked In LED TV Repaired

                        This Haier LED TV  with the model of  LE22C430V was brought to me with a complaint that the customer heard a loud ‘Tick’ noise, as soon as...

    • Posted September 15, 2017
    • 16
  • 3 cd player changer repair
    How To Repair 3 CD Changer That Does Not Play CD’s- Model: LG LM-M345

                    An old man walked to my shop and had a CD player in his hands. He did not know what was wrong with it but he wanted it to...

    • Posted September 15, 2017
    • 6