Headphones are an extremely useful accessory with which you can not only listen to music without distracting others, but also watch movies, play any media files, and also communicate with loved ones using programs designed for this purpose. But sometimes there is a need to make some kind of headphone repair. To do this, you need to know their pinout - information about the location of the contacts or, more simply, the internal device of the accessory. You will learn about how the various connectors differ from each other, about schemes and repair of headphones in general in this article.
Types of headphone jacks
The round connectors into which this device is inserted are familiar to every modern person. But not everyone pays attention to the fact that they differ in size.
Headphones can be connected to a huge number of different household appliances: to a TV, computer, smartphone or music player. The size of the connectors are divided into three groups. Each of them has the word Jack in its name, which means "nest" in English. Easy for remembering and pronunciation, the word also moved to the Russian language and is now used by a large number of users.
- Jack or big jack. A 6.25 mm connector that is used in a professional environment. Musicians often have to interact with him - suitable plugs have microphones, guitars and other instruments necessary for professional needs.
- Mini Jack - 3.5 mm. The most common connector in ordinary household devices. It is used in phones, laptops, televisions and other devices to which you can connect ordinary headphones or a headset.
- Microjack. The smallest option, its size is only 2.5 mm. Used in some small phones and music players.
Mini-jack connectors, which are most popular at present, are also classified into several types depending on the number of wires: two-pin, three- and four-pin. The first option is now practically not used, it can be found only in the oldest models of devices.
Three-pin headphones are a regular accessory, the two wires of which are the left and right channel, and the third is common. With the fourth cable, this is a headset - headphones with a microphone, which most often come with most smartphones and phones.
In order to make a quality and proper repair, you need to know the layout of the internal device of the headphones. Each model has its own, so at this point you should definitely pay attention.
Headphone jack pinout diagrams with and without microphone
The pinout diagram for the headset and ordinary headphones differs in the number of wires, as mentioned above. In addition, there may be other differences depending on the manufacturer and model of the device.
The plug of a conventional three-pin headphone is called TRS - it is an abbreviation of the three English words "ring, sleeve and tip". Using the circuit, you can repair a broken plug, damaged wires, and so on.
To do this, you need to solder the device and solder it again, taking into account the features of your model.
The four-pin connectors are called TRRS and come in two forms: CTIA and OMTP. A feature of each type will be the location of two contacts - a common and a microphone. They can be either closer to the wires or closer to the tip of the connector.
IMPORTANT! When buying a headset, it is important to determine the type of device. If you connect it to a system of a different kind, the sound will be dull and of poor quality, and the microphone will not work at all.
Headphone Repair
Depending on the problem you had to deal with, you can make various headphone repairs yourself. For example, replace the plug.
To do this, you need to cut off the plug, and then prepare the cable for operation as follows: it is necessary to separate the copper wire from the two channels so that only four cables are obtained. Then the two copper ones are connected, after which you can begin to remove the insulation. This can be done by not heating the wire too long. Remove any residual varnish with any sharp object.
Inside you will see three contacts. The cable must be routed through the upper half of the connector and the cover inserted into the metal base.
After that, the ends of the wires must be treated with solder and a soldering iron. To perform the following steps, you will need the pinout diagram of your particular model of headphones. It is important that the connection between the cable and the terminal is fairly reliable. The cable must be inserted into the hole and wrapped several times.
Check the performance of the speakers. Do not be alarmed by rustling or other strange sounds that may occur - they will disappear as soon as you complete the work. If everything is in order, then you can solder the parts to each other in the right places. Then the contacts are crimped with pliers.
Now you know what the pinout of the headphone jacks is, why circuits are needed and how to make a not too complicated repair of the device. With this knowledge you do not have to spend money on paying for the services of specialists or buying a new accessory.
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