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Mistakes that i’ve made when i’m still new in the electronic repair line

By on June 22, 2007

I could recall many mistakes that i’ve created when trying to finish a repair job fast when i’m still new in this repair line. Instead of solving one problem i add another problem into it. Electrolytic capacitors installed wrongly causing it to blow when the equipment is “On”, installing the secondary diode in reverse condition causing the whole switch mode power supply to blow, drop out solder lead touching on another track, the equipment won’t work because i’ve used a wrong value of resistor and many more. If you are a beginner, don’t critic yourself if you make a mistake as the mistake that you have made will actually make you stronger. Mistakes will make you wise so that you will not do it again. Sometimes, no matter how careful i am i do still make mistakes in troubleshooting (remember there is no perfect electronic repairer in this world). Would you like to share your mistakes to the readers in this blog? I welcome your comment.



  1. Kent Liew

    June 24, 2007 at 2:13 pm

    Even i have about ten year on repair line, i also can made mistake! One day, when i'm on the feeling down, may be near to be sick. I continue to repair my electronic device, suddenly, i wrong touch the crt video board circuits! You know, i have shock! and shorted by the power. So, i need to give all of you some advice, when you feel not so good, at that time, please just relax dont continue to work or repair something!

  2. admin

    June 24, 2007 at 3:12 pm

    Wow, here you have the chance to read the owner of protech2u dot com to give comment about repair. I have to agree with him, once you are tired or not feeling well, perhaps you need to take some rest before proceeding to do the repair work. By the way you can get lots of free schematic diagram by visiting his website by clicking on his name above.

  3. furkan

    June 29, 2007 at 11:34 pm

    I am new in electronic reparing once i am testing a FET which is in SMPS with out discharging cap so silly Ya no my mistake is only i trust at th bleeder resistor that resistor is open so when i prob on the drain there is a bang. So my advice that don,t trust any device in electronic
    Thank u

  4. admin

    June 30, 2007 at 12:07 am

    You are right, don't trust any components until you have confirm it with your meter especially dealing with power supply repair. An open start up resistor could actually deliver over 300 Vdc to the circuit under test. A simple mistake made will cause you to remember in your whole life. Take care.


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