JBL TUNE 120 TWS One Side ( Left or Right ) Not Working

Experiencing sound from only one side of your JBL TUNE 120 TWS earbuds can be frustrating and can significantly impact your listening experience. 

In this article, we address the common issue of one side (left or right) not working and provide detailed steps to fix it. We’ll cover various methods such as balancing the audio, turning off the wear detection feature, power cycling the earbuds, ensuring proper charging, pairing the faulty earbud first, and performing a reset. 

By following these troubleshooting steps, you can restore full functionality to your JBL TUNE 120 TWS earbuds and enjoy uninterrupted audio.

What Is JBL TUNE 120 TWS One Side ( Left or Right ) Not Working Issue

The JBL Tune 120 TWS experiencing one side not working is a common issue where users can hear sound from one earbud but not from the other. 

Sometimes, users may hear sound from the right earbud but not from the left, or vice versa. 

Some users may experience sound from the left earbud but not from the right. 

This inconsistency in sound output between the earbuds is why users report the JBL one side not working issue.

Fix JBL TUNE 120 TWS One Side ( Left or Right ) Not Working Issue

There are various methods to fix the JBL 120 TWS one side not working issue. I’ll explain each method in detail, so read and follow each step carefully. I hope that after following these steps, you’ll be able to fix the JBL Tune 120 TWS one side not working error:

Keep Audio Balanced

Firstly, you should try adjusting the audio balance on your device as sometimes imbalance can cause excessive sound in one earbud while the other produces no sound at all. Here are the steps to balance the audio on your device:

Go to the settings of your device.

Look for the audio balance option in the settings.

Adjust the audio balance slider until it’s almost in the middle, ensuring that the audio balance is maintained and sound is equally distributed from both earbuds.

Turn Off Wear Detection Feature

Many earbuds come with a wear detection feature, which automatically turns off the earbuds if they are not properly fitted in your ears. This helps save battery life. 

For example, if one JBL Tune 120 TWS earbud is securely in your ear and the other is slightly misplaced or not fitting well, the wear detection feature can detect this and turn off the earbud that is not properly fitted.

To disable the wear detection feature, you can use your mobile’s companion app, such as the JBL app. 

Turn Off & Turn On

If you are facing an issue with one side of your JBL Tune 120 TWS earbuds, a great way to fix it is by turning them off and then on again. To do this:

Turn off both earbuds by pressing and holding both buttons simultaneously for about 10 seconds.

Release the buttons after 10 seconds and wait for about 5 seconds.

After 5 seconds, press and hold both buttons again for 10 seconds, or quickly tap them 2 to 3 times.

Your earbuds should turn on, and you’ll notice the blue light blinking, indicating that they are in pairing mode and ready to connect.

Now, try connecting JBL Tune 120 TWS to the device again, and they should work properly on both sides.

Charge The Bud Properly

Sometimes, it happens that one earbud doesn’t charge properly because it’s not fitting correctly in the case. In such cases, I suggest trying the following steps:

Remove the JBL Tune 120 TWS earbud that is not working properly from the case.

Reinsert it into the case and ensure it fits securely and makes proper contact for charging.

Let it charge for some time, as the issue might be due to a low battery.

Once charged, start using it again and see if the sound starts working properly.

If you are facing a non charging issue then check our article on how to fix JBL TUNE 120TWS not charging issue.

By ensuring that the earbud fits well in the charging case and giving it some time to charge, you might be able to resolve the JBL Tune 120 TWS one side not working issue.

Pair The Faulty Bud First

If you are facing the “JBL Tune 120 TWS one side not working” issue, whether it’s the left earbud or the right earbud that’s not functioning, try the following steps to troubleshoot:

Start by turning off Bluetooth on your device to disconnect the earbuds that are currently connected.

Turn off both the earbuds. 

Turn on the earbud first that was not working (e.g., the left earbud). Press and hold the button on the left earbud 2 to 3 times until it turns on. It should automatically pair after turning on.

After the left earbud is paired, turn on the other earbud (e.g., the right earbud) and let it connect to the left earbud.

Once both earbuds are connected to each other, proceed to connect JBL Tune 120 TWS to your device via Bluetooth.

Following these steps should help resolve the one side not working issue. If the issue was with the right earbud, turn on the right earbud after turning on the left earbud.

Reset JBL Tune 120 TWS 

A great way to fix errors on earbuds is by resetting them. One common issue is the “one side not working” problem, which can often be fixed by resetting JBL Tune 120 TWS earbuds. There are various methods to reset JBL Tune 120 TWS earbuds.

Conclusion

Dealing with one side of your JBL TUNE 120 TWS earbuds not working can be a hassle, but with the right troubleshooting steps, it’s often an issue that can be resolved. 

By balancing the audio, turning off the wear detection feature, power cycling the earbuds, ensuring proper charging, pairing the faulty earbud first, and performing a reset, you can restore the full functionality of your earbuds. 

Following these methods will help you enjoy a seamless and immersive listening experience with your JBL TUNE 120 TWS earbuds once again.