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Our Mistake In Repair

By on May 30, 2013

You will not be surprised if there are more problems after you have start troubleshooting the set. The reason behind it is simple-our own mistake. Here are the list of the mistakes:

1) Did not connect the power supply to load. Some power supplies need a good load to operate. Without the load, there could be over voltage and this could burnt some of the components in the power supply itself.

2) Accidentally drop some solder or even small screws on circuit board. If this happened, the circuit board components could get burn.

3) Did not plug in the connector after you have removed it for checking. One good example is the Yoke coil connectors in the CRT equipment. In some designs, the HOT will be destroyed immediately the moment you turn the set on.

4) Solder bridge on the component’s leg. You could have accidentally shorted the components pins when you were doing the soldering work.

5) Did not install the component properly. You could have installed the electrolytic capacitor the other way round causing the capacitor to explode when the set was On.

6) Did not use original components.  A substitute or replacement part number don’t always work. Sometimes an equipment could only function well when you put in the right and original components

You may be wondering why after replaced the components, the set would still not be function. Always track back the last action you have done on the set before you replace the component. If you could spend 1 hour on troubleshooting and repairing the equipment, why not you spend another 5 minutes just to double check everything before you turn the set On. The good practice is always double check you work so that you would not regret later of causing more problems to the set than you can solve.

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5 Comments

  1. Mohammed Kasim CM

    May 30, 2013 at 8:23 pm

    5 minute saves me a lot of problems

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    • Jestine Yong

      May 31, 2013 at 10:39 am

      Hi Mohammed,

      That's right.

      Jestine

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  2. Bradley

    May 31, 2013 at 5:49 am

    Very good suggestions, Jestine.
    I think everyone that has ever serviced electronic equipment have had that to happen.
    I worked with an older person once and he had constructed a power supply and had the caps in reversed polarity and when he plugged it in to AC power, there was a lot of fireworks. He can running real fast to get away from where he was. Funny to see but scary at first.

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    • Jestine Yong

      May 31, 2013 at 10:40 am

      Hi Bradley,

      I had that experience before but I have learnt from my mistake. Actually mistakes made us to become a better person.

      Jestine

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  3. Jose

    June 1, 2013 at 8:22 pm

    7) En los equipos actuales no todas las fallas son producidas por componente, pueden ser originadas por el software, es bueno que lo reinstales o que busque en la página del fabricante si ha salido un nuevo firmware que corrija problemas detectados y corregidos

    7) In the current teams are not all caused by component failures can be caused by the software, reinstall it is good or to look at the manufacturer's website if it has come a new firmware to correct problems identified and corrected. Do some research before you begin to disarm. Investigue un poco antes de comenzar a desarmar

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