The device is about a year old and the problem occurs both while connected via bluetooth and via AUX. It's well taken care of too.

What could possibly be causing this problem? Does the device believe that its battery has been drained or something? I'm really at a loss, and appreciative of all help I can get.

⟐ Answered September 16, 2025 at 5:55 MST

⟐ Answered November 18, 2021 at 10:23 MST

When I charge it, I can see that its fully charged with the green bars.

There's no damage to it that I can see

⟐ Commented April 30, 2025 at 2:58 MST

So i was wondering if i missed a step when i set it up, and if you guys had answers to my problem

⟐ Commented February 25, 2026 at 19:30 MST

THIS IS A “JBL CINEMA SB160”

Hello thank you for looking at my post I looked everywhere on the web and couldn’t find a solution. I have two JBL soundbars and sub woofers both the same model JBL cinema sb160. One works one doesn’t!

I replaced the dead fuses in the main plug to the soundbar for both my sb and woofer this was caused by a faulty power rail that is now replaced. Sound bar does not turn on when plugged in to mains, has no lights or response to inputs. Sub woofer has a flashing light and pairs with my identical sound bar.

I tested the output of the sb power supply disconnected from the motherboard pcb. It has a 17.5V output. The plug says it is rated for 30W and 2.5A. Does this seem right or can I use a laptop charger perhaps 12V for this to work? OR is the motherboard pcb faulty and i scrap the thing.

TLDR: The plug is rated for 30W and 2.5A but the power supply reads 17.5V disconnected from the mb pcb does this seem right?

Close up shots of the power supply:

⟐ Commented February 16, 2026 at 19:47 MST

⟐ Commented February 03, 2021 at 0:54 MST

I bought a JBL Xtreme in Australia, after 4 months the battery broke. I contacted JBL when I was in Belgium but they refused warranty because I bought the speaker in a different country.

So I decided to fix it myself! (if you want to skip the processes go to part 2)

I followed this diagram:

When I tested it I got 3.5V on each battery, yet when I tested the voltage on the connector I got nothing. I tried it inside of the speaker but nothing happened probably because the BMS board got too hot.

The day after I measured the voltage on the battery again and suddenly got 7.2V! So I put it inside of the speaker and it worked!! So I charged the speaker completely and the final voltage when it automatically cut of was 8.3V

I played the speaker like this for 1 hour on low volume to see if the battery got hot but all was good, so i tried to reassemble the speaker and I saw it wouldn't fit. So I trimmed a bit of the plastic of and realized it was the battery's circuit board that was too big.

So I moved the BMS board to the inside of the speaker and put some foam around the batteries so they wouldn't vibrate or get damaged when falling.

Then I put electrical tape around the circuit board and hot glued it to the side. I re-assembled the speaker completely and let the BMS board cool down all night. The morning after the speaker still didn't do anything so I briefly connected it to power and it worked again.

Then I went outside to test the speaker loud and I could immediately hear something was wrong I heard some vibration like there's something loose inside or the woofer is broken. When I came home I opened up the speaker and checked everything but there's nothing loose and neither the battery or the circuit board touch anything they shouldn't touch. I also re-checked the voltage on the battery and it was at 7.5v I don't know when exactly this started because the first time I didn't play the speaker loud.

So what did go wrong? Is it just the 18650 batteries that give too much power which made the woofers blow or is it some other component? Or did I do something else wrong?

Here are 2 examples of the sound:

It seemed the problem was air escaping from a hole in the front, I used some of the black gum inside the speaker to re-seal it. I also sealed the hole where the battery's cable comes out of. I also moved the BMS board back into the battery compartment and screwed it very tight.

It's crazy how a bit of air escaping could make the speaker sound so horrible! Although on some tracks it still doesn't sound right but I don't have another JBL Xtreme to compair it too, so maybe it's just me :P

Greetings

Dennis

⟐ Commented October 24, 2023 at 9:53 MST

⟐ Commented April 13, 2020 at 5:48 MST

after using the JBL for 7 hours, it stopped working and turned on a flashing red led on the bottom of the box! I can’t turn on and i can’t turn off! it only turn off when the battery runs out, and when I put it to charge it does not turn on and continues with the red led lit on the bottom! Anybody know? thank you!

⟐ Commented October 12, 2022 at 10:10 MST

when i initially charge it, it only goes up to the 4 led light and it just keeps blinking.

how long is the initial charge, because it says in the manual 3.5 hours. mine has been charging for 5 hours and it still just blinking up to the 4 led lights.

please help. did i got a lemon? or is this just normal for battery initial charge?

⟐ Commented May 25, 2020 at 9:03 MST

My JBL Xtreme is not charging, not working. Just blinks one led white then blinking red and repeats.

I have removed the battery and connected charger, it did not worked. And same blinking.

I have disconnected the charger and connected DC 8V power source to power socket on board. No lights came out but it sinks current 0.25 A. I have tried to power on but no luck.

So if my JBL XTREME doesnt have a motherboard issue, is it possible to run it remove the battery and connecting device to a constant DC power source.

⟐ Commented August 31, 2025 at 11:38 MST

⟐ Commented July 20, 2025 at 11:43 MST

⟐ Answered September 28, 2023 at 4:20 MST

⟐ Answered November 18, 2022 at 20:40 MST

⟐ Edited January 13, 2018 at 6:05 MST

As LEDs do meu JBL Xtreme oscilam entre três e quatro, indicando que o dispositivo está carregando. Até aí, normal. Mas quase sempre, ao desligar, o conjunto de LEDs se apaga, e reacende com uma indicação de carga diferente, oscilando entre quatro e cinco LEDs. E quase todas as vezes em que eu faço esse procedimento, ele aparece com uma indicação de carga diferente, como uma falsa indicação de carga. Eu não tenho experiência nisso, mas tenho motivos para crer que se trata de um problema na bateria, ou pior, problema na placa do dispositivo. Qualquer dúvida quanto a clareza de minha questão ou qualquer resposta ficarei feliz em dar um feedback. Obrigado.

⟐ Answer deleted October 19, 2018 at 0:12 MST

I never charged it fully the first time and I've just been charging it until the 5th LED has been blinking.

I tried to get it to full charge today charging for more than 4 hours and this resulted in the LEDs turning off all together. Does this mean it is fully charged?

⟐ Commented December 08, 2023 at 0:09 MST

⟐ Answer deleted December 09, 2021 at 17:03 MST

I changed the battery in my JBL Xtreme half a year ago: [SOLVED] Horrible sound after battery replacement.

The speaker was working perfectly up until now, it seems to be very inconcistent with charging. When I opened it up I saw the whole BMS board was oxidized. (From using too much flux)

There's a video about this by Abrar Akram that explains it in more detail: LINK

These are 2 compatible boards that can be found on Aliexpress that are very cheap 'HX-2S-D01' and 'HX-2S-A10'

I made a diagram for the wiring, 2 sources confirmed this to be correct.

I will post pictures of the result.

⟐ Answered October 22, 2025 at 21:29 MST

⟐ Commented February 17, 2023 at 11:25 MST