Sony WH-CH720N Troubleshooting

Bluetooth function of the device is not connecting to the device properly or at all.

A Bluetooth driver is a software program that enables communication between your operating system and the Bluetooth device. If your Bluetooth driver is faulty or outdated, your computer might fail to establish a connection with your Bluetooth headphones.

Bluetooth is a form of radio signal, and radio waves can be disrupted as they travel through space. Newer Bluetooth devices are less prone to interference compared with older versions, but environmental factors can still cause hiccups. Places where a large number of Bluetooth devices are being used such as a crowded gym, office, or convention center can cause signal drops.

The device has on/off and pairing modes. Pairing mode is entered by holding the power button down for approximately 5 seconds.

Device joints are not functioning properly and need a diagnosis to determine (and fix) the issue.

Parts will have to be sourced to repair the device.

Can be remedied by tightening screws if applicable.

Device speaker is not working properly or at all.

Allowing the device to fully charge may remedy this issue.

Can be remedied by carefully rotating each earphone individually until the wires realign (temporary fix). Long-term resolution will require opening the device and realigning the wire/ replacing the wire.

Can be remedied/ prevented by listening to music at a lower volume. If necessary the speakers may have to be replaced.

Buttons on the device are not working properly.

If possible, try to disconnect the headphones from their device and restart.

Check the buttons for dust and dirt particles and clean out with Q-tip, vacuum, or similarly gentle cleaner. If the button is still not working, remove it via paperclip and gently flush out with water.

If none of the other options have worked for you, you may need to replace the button(s) altogether.

The charging port on the device is not working when trying to connect it to a charging cable.

If pairing is not working, delete the pairing information for the headset from the device and pair them again.

 The cable you’re using might be faulty and need to be updated. Use a new or different charging cable and see if this method works.

The charging port might be dirty, so try to clean it out using tools designed to clean these ports specifically so you don’t accidentally damage the product.