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Identifying bad capacitors is fairly simple. Start with a search for images of bad capacitors to see what they look like. If one capacitor has failed, there is a good chance the ones around it will fail, or may have partially failed. They were manufactured around the same time. Also, when a component fails, the rest of the circuit can be damaged by the electrical stress. Doing them all at the same time is fairly easy.
  • Identifying bad capacitors is fairly simple. Start with a search for images of bad capacitors to see what they look like.

  • If one capacitor has failed, there is a good chance the ones around it will fail, or may have partially failed. They were manufactured around the same time. Also, when a component fails, the rest of the circuit can be damaged by the electrical stress.

  • Doing them all at the same time is fairly easy.

  • New capacitors cost a few cents.

  • Each capacitor is coded on the side with:

  • Manufacturer and/or Product (Green box in the image)

  • Red box: Capacity (micro Farads); Blue box: Voltage (V); Yellow circle: Temperature Rating (C)

  • Notice also how the capacitor on the right has obviously "blown out".

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