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Harman Kardon Onyx Studio 2 Troubleshooting

This troubleshooting page will help you diagnose problems with the Harman Kardon Onyx Studio 2.

Fails To Charge ¶ 

The speaker will either not charge or has a very short battery life.

Defective Charging Port ¶ 

Often times, dust and debris get caught in the port and causes poor connection between the port and the adapter. You can clean out the port by blowing gently into the port opening to clear out dust. If this does not work, carefully try using a can of compressed air to clean it out.

Faulty Power Adapter ¶ 

If the issue seems to lie with the power adapter, first check your power source (like the wall outlet) and make sure there is electricity present by plugging in a different device you know to be working. Also, check the cable or the connector for any visible damage. If it appears that the adapter is damaged, replace it with a new one.

Unreliable Battery ¶ 

Over time, the battery may have deteriorated and therefore lost it's ability to hold a charge. If this is the case, follow this guide to replace your battery.

Distorted Audio ¶ 

Audio coming from the speakers is distorted by static, clicking noises, or humming. Audio may also be hard or impossible to hear.

Bluetooth Not Connecting ¶ 

Make sure the two devices are within Bluetooth range (average is 10 meters). If not, move them closer until they reconnect. If they do not reconnect and the connecting device is known to have working Bluetooth, the circuit board in the speaker may need to be replaced, which is explained in this guide, or the Bluetooth antenna may need replacing, which is shown in this guide.

Dirty Speakers ¶ 

The speakers could be dirty or clogged with dust that could alter the sound quality. If this is the case, try gently wiping dust and dirt away with a non-alcohol based cleaner and a paper towel.

Broken Speakers ¶ 

If there is no sound, the speakers are most likely broken, whether it is the speaker itself or because the rubber foam is damaged due to wear and tear or drying out. Both of these issues would cause distorted audio or no audio to be present. Follow this guide to replace the speakers. If the speakers seem to be in good condition (i.e. not damaged rubber), the problem is most likely in the circuit board. Follow this guide to replace the circuit board.

Control Buttons Do Not Work ¶ 

One or more of the control buttons does not function (i.e. won't change volume, power on or off, connect to Bluetooth).

Faulty Buttons ¶ 

One or more buttons is unresponsive and fails to operate correctly. It is likely to be a faulty control board, so to replace it, follow this guide.

Worn Out Buttons ¶ 

Overuse of the buttons may cause them to wear out the rubber and therefore won't function correctly. The proper contact needed between the control board and the buttons is no longer there, so the rubber button ring would need replacing. Follow this guide to do so.


where is the actual guide?

Eric Yang - Reply

Any idea of where I can get a replacement battery from?

Errik Kelly - Reply

Press & Hold the bluetooth button on the speaker until it breaks the connection.It will make an audible tone

H.O. Pang, FCII - Reply

Having issues with audio bluetooth dropping out and defaulting back to computer's audio

Kelly Rockett - Reply

Speaker play fine.then cuts off. The power button continue to blink the whole time it's on.

Kevin Chillus -

Speaker work fine.But cut off about30 sec into playing .power button blinks the whole time .even after the stop.But never cut off power

Kevin Chillus -

I have an onyx 2. It keeps asking for a pin number to connect to my laptop. I tried 0000 no luck. When I hold the BT button and + button it say 1 9 ? any help?

Carlos - Reply

Operates while attached to charging unit but as soon as disconnected it stops. The unit is less than a year old, could it be faulty battery? And if so where or how can I replace the battery?

Steve Amelotte - Reply

Have the same issue. Plays whilst plugged in but once it's on battery life it lasts all of 10 minutes. Device is about a year old. Got it last Xmas as a gift.

sunilvanmari -

Have the same issue. Device won't play for more than 10 mins on battery life. Got it as a gift last Xmas.

sunilvanmari -

Same here as well… I have 2 if them that are doing the same thing…. Frustrating

Rance D. Jordan -

I've only used my speaker three times and it's not coming on

Suzanne trotter - Reply

My speaker will only connect for music when it’s connected to my laptop.  I have it connect to my tablet or phone and I can watch a movie or listen to music.  Any suggestions?

Traci Lester - Reply

The power button keeps flashing for a couple seconds then it turns off

Tristan Flores - Reply

Who can fix my Harmon kardon speaker it’s brand new used it a few times not getting any power to the speaker

Mario Singleton -

i have the same problem, ,any ideas on how to solve this?

angelo papastamos -

I have the same problem -o n a year old Onyx mini ?

deemaybe -

I’m having the same issue. Did u ever get it resolved?


the speaker does not charger at all

paul - Reply

i have the same %#*@ problem, ,any solutions?

angelo papastamos -

works well with my iphone even when phone are sleep, but distorted after several minutes with my macbook.. what’s wrong? thanks

teja hardy - Reply

I’m having a similar problem. I’ve used my harman/kardon with my MacBook Pro daily, 8 to 10 hours a day, since I bought the speaker in February. Just this week, though, the audio with the speaker is distorted intermittently, whether I’m streaming from the web or playing tunes in my iTunes library. Haven’t tried it with the phone but will now. Anyone have a solution to this problem Teja and I share?

Susan Dooley -

Speaker plays for a few minutes then cuts off. Only played it a few times

Anthony Moore - Reply

same here! it will play arround 1 to 2minutes and then no sound unles you press any keys and once you stop pressing the its dead

Aldes Lu -

The speaker fell once and now it doesn't turn on…Is there a reset button or something I can do to fix it.

Myra Pagan - Reply

I sound like the others… but exactly the same thing happened to mine! Lol it fell, & now it sounds like $@$*. Reading all these probs makes me think h/k onyx is a lemon. cuz mine would only play music for 15 mins on a full charge. Very bummed out cuz it used to sound great! Anyways.. Jeff Riles~



The speaker fell to the floor and now it won't turn on. Is there a reset button.

Myra Pagan - Reply

mine won’t connect to anything - not via bluetooth or an aux cord. Is this fixable? I tried resetting - it didn’t work.

Amanda Marek - Reply

my onyx 3 problem on ac mode if connect ac adapter my speaker it will mute sound and can't power on - off until disconnect ac adapter.

crissipper coyote - Reply

M Harman/Kardon keeps disconnecting from my laptop. Seems that any sound makes it turn off.

tamiep - Reply

Never mind, it was unplugged and the charge ran out. Duh!

tamiep - Reply

My aura studio 2 keeps turning off and on and I can’t listen to my music

john.edgil1 - Reply

My speaker light flashes constantly while plugged in to the wall outlet so I know it is getting power. The issue is when I use Bluetooth it will play for about thirty seconds then cut off what should I do?? Thank you in advance

Bob orender - Reply

My speaker will cut off after 30 seconds of playtime while connected to Bluetooth I know it is getting power cause the power light flashes any help would be great thank you

Bob orender - Reply

I´ve just noticed that the deep bass from one disappears when connecting two Onyx 3 with each other, which sucks!! Anyone here that knows how to fix that issue?

Martin Sandahl - Reply

Where can I get the replacement battery for the Harmon Larson Onyx speaker?

Elvis Grant - Reply

It’s connect but no sound unless you press a key then the sound comes as soon as you release the key then it goes off

charles darko - Reply

same bro.. do you know what is the problem?

Aldes Lu -

What if it makes a sound when turning it on and off, also when connecting it to Bluetooth. But everytime I play the music, I don’t hear anything. Please help me

Abriel Bernabe - Reply

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