Illustration of how to connect a broken headphone cable. Recommended wiring principles and welding operations for headphones.

php editor Xinyi will introduce to you the diagram of how to connect the broken headphone cable and the recommended wiring principles and welding operations. When the headphone cable breaks, we can repair it by welding to restore the normal use of the headset. The wiring principle is to connect the broken wires through welding to ensure that the signal can be transmitted normally. When performing welding operations, you need to pay attention to the welding time and temperature to avoid damaging the headphone cable or causing the welding to be unstable. With correct wiring and soldering operations, we can easily repair headphone cables and extend the life of the headphones.

There are two common types of 3.5MM plug headphones, three-section wire type and four-section wire type. The difference lies in whether there is a microphone. The three-section wire does not have a microphone input line, while the four-section wire does. They are introduced below. Schematic diagram and wiring method of three-segment line and four-segment line.

One and three-segment lines

The three lines of the three-segment line are the left channel, the right channel, and the common ground terminal. The three-stage headphone plug and the actual picture are as follows:

Two and four-segment lines

In addition to the left channel, right channel, and common ground terminal, the four-segment line also has a microphone input connection. However, the wiring sequence on the four-segment cable plug is not exactly the same. The difference lies in the difference in the position of the ground terminal and the microphone terminal. The wiring principle and actual objects are as follows:

3. Joint wiring and welding operations

1. Check the joints and determine the order of welding. The three wires start from the bottom Weld upward.

2. Fix the joint, clamp the joint in place, and give yourself a convenient angle for your next work.

3. Twist the headphone cable, separate all four wires, and separate the wires you want to solder.

4. Thread the heat shrink tube, the spiral tube of the headphone head, and the transparent fixing sleeve in order.

5. Check the original connector wiring sequence and compare it with the wiring sequence you determined before to make sure it is correct.

6. Welding. Don't use too much solder when welding, because the three wiring locations are relatively small and close together, making it easy to connect them together.

7. Connect the plug to the earphones, turn the sound up to the maximum, and try to see if the sound is normal.

8. If successful, put the heat shrink tube on the joint, heat it with an alcohol lamp to protect it, and then tighten the screw head.

4. Earplug wiring operation

1. After the preparations are done, remove the plug. Some plugs are threaded and easier to remove, while most plugs are glued. At this time, you need to use a hot air gun. When using the hot air gun, be careful not to blow hard at one place all the time, otherwise the thread will be damaged. Just blow it around like a hair dryer. Blow it for a while and try to pull it out. Be sure to use a rag or toilet paper because it is very hot.

2. Determine the location of the wiring based on the plug you removed. There are usually two wires, a ground wire (usually brass), and a left and right channel wire (red or blue). At this time, you can cut the thread short and leave a small section on the plug.

3. Thread the new thread. If you have also removed this black thing, you must plug in the black thing first and then thread it, otherwise it will be difficult to insert it after threading it.

4. If there is limited space after wearing it Metal is better, but if not, it’s best to tie a knot to protect the joint.

5. Fix the plug, still weld the ground wire first, and then the sound channel wire. Test the position before welding. To make it easier for the other half of the plug to be buckled, this should be taken into consideration when reinstalling.

6. After welding, use hot melt glue or other glue to fix the bottom of the other half of the plug.

7. Cover the plug and seal it with 502. The test machine is normal and the repair is perfect.

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