crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2861143:0crwdne2861143:0

Repair guides and support for smaller headsets that rest on top of the ear, also known as supra-aural headphones.

crwdns2934591:060crwdne2934591:0 crwdns2934593:0crwdne2934593:0

crwdns2933897:0crwdne2933897:0

Bluetooth function wont work, or turn on so I have to use wired.

So I got these synchros s400 bt and for some reason when I go to charge the light around the port goes red and stays red. I dont know what's wrong.

crwdns2934081:0crwdne2934081:0 crwdns2934083:0crwdne2934083:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0

crwdns2933313:01crwdne2933313:0

crwdns2934221:0crwdne2934221:0
crwdns2931211:0crwdne2931211:0 crwdns2931215:0crwdne2931215:0 crwdns2934225:0crwdne2934225:0
crwdns2934051:0crwdne2934051:0

crwdns2933897:0crwdne2933897:0

Hi @spongebobsquare ,

I think that the battery may be failing and needs to be replaced. Even rechargeable batteries have a lifespan

I cannot find a teardown or battery replacement guide or video for the headphones but here’s a video that may be of some help. At approximately 1:22 minutes into the video the battery can be seen.

Replacement batteries are available online. Just search for JBL Synchros S400BT battery to get results for suppliers that suit you.

crwdns2934105:0crwdne2934105:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0

crwdns2934229:0crwdne2934229:0

Van crwdns2934231:0crwdne2934231:0
crwdns2936625:0crwdne2936625:0:

crwdns2936751:024crwdne2936751:0 0

crwdns2936753:07crwdne2936753:0 0

crwdns2936753:030crwdne2936753:0 1

crwdns2942667:0crwdne2942667:0 31