JBL wireless speakers are wonderful. They connect via Bluetooth to the source devices. However, theJBL speaker connected but no sound issue has been reported recently.
You are not the only one to face this problem, I also encountered it with my different JBL versions. Such problems are not unexpected when it comes to wireless devices.
Moreover, some new users can also come across such troubles. Because they may not know the proper method to establish the connection.
Here are some important ways to fix the issue,
1. Check the Volume Level2. Reconnect the Devices
3. Charge Your JBL Speaker
4. Check Sound Output Settings
5. Reset Your JBL Speaker
6. Troubleshoot the Source Device
7. Advanced Hacks
8. Contact JBL Support