For earplug users, especially entry-level earplug products, the most likely situation in the use process is that earplugs "don't ring on one side", which is what we often call poor contact. In fact, in this case, we can repair it ourselves, but because there is no corresponding tutorial, ordinary netizens dare not take the risk.

Tip:

This operation is suitable for users with certain hands-on ability to ensure that your earplugs have passed the warranty period; If your earplugs are still under warranty, please contact customer service for repair to avoid unnecessary losses.

As we all know, headphones/earplugs are consumables, and various problems often occur after several months of use. However, according to the investigation, it is found that the problem of wire disconnection caused by short circuit and frequent winding at the earphone plug accounts for more than 80% of the earphone damage! Many friends' headphones have been used for several months, but one side rings and the other side doesn't, so they can only buy new headphones, causing economic losses! We will become "governors" in the economic crisis. Now let's share the maintenance knowledge of entry-level headphones/earplugs. The following is the headset/earplug maintenance flow chart:

There is a sound when the root of the earphone plug moves, and there is often a sound and no sound. For example, if you pull out the sheath on the plug, you will be surprised to find that because the root of the plug is often bent, the copper wire in the rubber has been disconnected, leaving only some tensile bulletproof wires still connected (broken bones and tendons). Tensile bullet-proof wire is non-conductor!

In fact, the more bullet-proof wires and copper wires contained in the earphone cable, the greater the strength, and they are generally constantly pulled. If you often fold back and forth (not necessarily intentionally, it is a bad habit of using headphones at ordinary times, unintentionally! ) will cause harm!

Carefully cut the plastic at the root of the plug with scissors to expose the solder joint!

Unplug the headphone cable at the other end to expose four wires (enameled wires)! The red line is the right (R+) channel, the green line is the left (L+) channel, and the two yellow lines are the common ground (G-).

Solder electroplating is also an important link, which is generally difficult for beginners! The power of enameled wire tin soldering iron must be larger, and it is done with flux such as rosin or solder paste!

Carefully weld the tin-plated wire end to the plug to ensure that it is not "short-circuited". The solder joint is small, and the solder should be moderate! The welding time should not be long, and the solder joints of the plug should be separated by plastic. It is easy to "short circuit" when the welding time is long! The picture above is green (L), red (R) and yellow (G) from left to right. All 3.5mm stereo plugs are defined like this!