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Braven HD Speakers - Need Help Troubleshooting

eacastel

Aug 26, 2023
3
Joined
Aug 26, 2023
Messages
3
Hello,

I have 4 Braven HD speakers and I need some help troubleshooting. Here are the details:

Speaker 1: Almost 100% functional but charging circuit is bad. Will not recharge battery but everything else works.
Speakers 2&3: When battery power led turns on (led lights and startup sound) and seems to go through a bootup sequence but fails to complete and shuts down (speaker turn off sound) as if I had press and held power button to shut off (very consistent start and off times). Both speakers will charge battery.
Speaker 4: Boots up and stays on but no bluetooth functionality. Will not go into pairing mode. Speaker-in corded does work and it charges battery.

My goal is to troubleshoot speaker 1 charging circuit and fix at component level and fix either or both boot issues with speaker 2 and 3.

I have searched for schematics and no luck... Here is a picture of the main board. There is another I/O board that has 12V barrel power connector / USB-A / 5 LEDs / speaker out jack and a push button for battery charge level.

I am not sure where to start. Any ideas/direction would be greatly appreciated.

Thanks! Ed


TlOEGOmvaoN6eL2o.jpg
 

Martaine2005

May 12, 2015
4,953
Joined
May 12, 2015
Messages
4,953
Speaker 1, how do you know it’s not charging?.
As mentioned, is the battery ok?.

Martin
 

eacastel

Aug 26, 2023
3
Joined
Aug 26, 2023
Messages
3
Fit new batteries.
Thanks for getting back to me. All 4 battery packs I have do charge (on speaker 4) completely from a full discharge. I am taking that as the battery packs are all good still. Do you agree?
 

eacastel

Aug 26, 2023
3
Joined
Aug 26, 2023
Messages
3
Speaker 1, how do you know it’s not charging?.
As mentioned, is the battery ok?.

Martin
Hello Martin,

How should I test the "non charging" unit when it is plugged into the AC adapter? It has three wires on the battery. Red Black and Yellow.

4 cell Li ION 7.4V 32.56Wh 4400mAH

Thanks, Ed
 
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