How to Fix Charging or Power Issues on Avantree Harmony / Harmony 2 – Avantree Support

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Harmony / Harmony 2 – Not Charging or Turning On?

Follow the steps below for the device having the problem.

Important: The speakers have rechargeable batteries. The transmitter does not have a battery and must stay connected to power.

🔋 Speaker: Connect it to USB-C power using a 5V / 1–2A wall adapter.

Battery lights flashing / filling WHITE = Charging

Battery lights SOLID WHITE = Fully charged

🔌 Transmitter: Connect to USB power (5V / 2A) and turn it ON.

LED ON = Transmitter is receiving power

No lights? Continue to Step 2.

Try a different:

Tip: For testing, use a wall adapter instead of a TV or computer USB port.

🔋 Have More Than One Harmony Speaker?

Use the cable and charger from a speaker that charges normally with the problem speaker.

Starts charging? → The original cable or charger is likely the problem.

Still not charging? → Continue below.

Step 3 – Check the Charging / Power Port

Unplug the cable and check the port for:

Reconnect the cable firmly and check the lights again.

Important: Do not insert metal objects or sharp tools into the port.

Step 4 – Speaker Still Won't Turn On?

A completely drained battery may not turn on immediately.

Speaker turns on? The battery was likely deeply discharged. Let it fully charge before normal use.

A normal full charge takes approximately 3.5 hours.

Step 5 – Transmitter Still Has No Lights?

Make sure the transmitter is connected to USB power (5V / 2A).

Still no light? Try another:

USB cable → Power adapter → Wall outlet

Remember: The transmitter must stay connected to power and switched ON.

Need More Harmony 2 Help?

Tell us whether the issue is with the speaker or transmitter, what lights you see, and whether you tried another cable and power adapter.

If possible, include a photo or short video.