Harman Kardon Esquire Mini Troubleshooting

Loud buzzing noise when the speaker is disconnected

Ensure that no connections have been pulled loose. If they have, reconnect them, making sure to do so the right way. Double-check the power connections from the power supply.

Verify if the ventilation is overheating; this may cause the unit to underperform. Turn off the speaker. Let it cool for a few hours then turn the speaker back on and verify if it is still functional.

Inspect the unit for any signs of dirt or dust; this may cause sound loss. I any of entities are found follow the following steps: 1. Use a microfiber cloth. A regular rag is coarse and may harm your speakers’ finish. 2. Dampen the cloth but do not overdo it. If it is dripping, it is too wet. 3. Move the damp cloth in circular motions in order to prevent streaking. 4. To clean the grilles, simply use a lint roller and move it up and down. 5.Do NOT use chemicals on your Esquire Mini.

Device turns off after a couple of minutes of being turned on

You may have drained the devices battery. Plug the device into a power supply; wait, then test if the problem is fixed.

A defective Field Effect Transistor (FET), a faulty Integrated Circuit (IC). Check properly if each component is attached, in order to find out the root cause of the problem.

The battery will not hold its charge or does not announce the battery life. Avoid storing in high temperatures and moist places. Do not leave the device unattended for more than 6 months, because this may cause the battery to stop working.

Battery won't charge when plugging it

There might be small foreign objects stuck in the charging port, try to use hair dryer or a way to create air pressure to remove them.

The metal inside the USP port is bent causing inappropriate contact with the USP cable. Try to shut off your device, move the battery out and plug it back on, then turn the device on

The stand is unable to support the device's weight

Stand does not work when you are trying to pull it out. The spring may be overworn. The whole stand would need to be replaced please refer to the Harman Kardon Esquire Mini External Stand Replacement

There may be debris inside the device’s stand, which obstruct the stand from working

Some of the buttons are not responsive when they are pushed

When charging the device, the white charging lights are unresponsive. The lights may be damaged and need replacement, please refer to the Harman Kardon Esquire Mini Buttons and Charging Indicator Lights's

When pressing the buttons, they are unresponsive. This may be because the buttons are damaged. Replace the power, Bluetooth and, phone buttons.

When trying to adjust the volume settings in the device, there is no response. This could indicate that the volume buttons need to be replaced.

While using the audio cable (ex as external speaker for a PC) the audio cuts out and it looks random but it is not.

For the record is the same behavior with or without USB charger.

When I listen this track on YouTube in a specific volume level in a systematic way it cuts out between 12:15-12:18 and also in many other parts.

If I increase the volume the issue is done but when is not laud the issue is back in a systematic way.

I tried with my kids old JBL speaker that also have wired audio input and it does not cut the audio. Audio also works without issues with the computer integrated speakers.

I tried on my phone using same browser and I was capable to reproduce the issue including to "fixing" it by increasing the volume.

No matters if the audio cable is connected or not. The issue does not happen while using Bluetooth, not even is the sound is low.

This is pure speculation but could be the engineering team focused on Bluetooth and did not optimize the energy saver for wired aaudio usage then low volume is detected as idle and the speaker try to go to sleep but gets awake almost immediately while detecting sound again.