How to Solder in an AUX Input Jack

Written by deronte' smith
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How to Solder in an AUX Input Jack
Solder your AUX input jack to fix your jack's problem. (Jupiterimages/liquidlibrary/Getty Images)

When stereo systems, speakers and radios work well, they are an invaluable resource for playing and enjoying your favourite music. Auxiliary input jacks allow you to use your other devices, such as mp3 players, through your system. Eventually soldered connections weaken as a result of use, wear and tear or an ageing device. You can potentially save yourself the cost of replacing the system by soldering the connections for the auxiliary (AUX)input jack and restore the connection.

Skill level:
Moderate

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Things you need

  • Soldering gun
  • Solder
  • Philips screwdriver
  • Flathead screwdriver

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Instructions

  1. 1

    Identify the auxiliary jack on your device. The jack is located in different places on different devices and vary depending on device manufacturers.

  2. 2

    Locate the screws keeping the device together.

  3. 3

    Unscrew the screws from their location. Remove the casing concealing the auxiliary jack's base connection exposing the wiring harness, which looks like a small plug.

  4. 4

    Solder the connection at the opposite end of the female end of the harness, where the wires enter the harness. Carefully touch your soldering gun to the "cold" solder. The cold solder appears a dull grey in colour, which indicates a dead connection.

  5. 5

    Apply a very small amount of new solder to the areas you are resoldering. Allow solder a couple of minutes to dry firmly. If done correctly, the solder appears shiny.

  6. 6

    Reassemble your device. It will is ready to use with your soldered connection corrected.

Tips and warnings

  • Auxiliary input jacks are on a wide variety of electronic devices from MP3 players, CD players, DVD players, speakers, receivers and more.
  • You should consult your manual to locate the input jack on your device and the recommended means of disassembling the device.
  • Self-repair to your device will likely void your warranty.

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