OPGELOST: Bluetooth function wont work, or turn on so I have to use wired. - On-Ear Headphone

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.

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Gepost: 25 dec. 2020

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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.

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On-Ear Headphone

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

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