My Sony XM4 suddenly stopped powering on — no LED, no response even after charging for hours and trying resets.
However, it still works perfectly when plugged in with a 3.5mm audio cable.
I also confirmed there's no issue with the USB cable — tried multiple cables and chargers, still no sign of charging or power.
Has anyone experienced this? Is it likely a dead battery or a charging IC failure?
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Good troubleshooting info - and your guess is the most likely the answer.
Disassemble and check battery - most likely
Other than that, it is likely not repairable unless you can find a simple component failure like a diode or transistor.
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Hiii!!! I found the issue of the device currently the headphones working without an issue
Ill explain what was the issue so in the charging PCB a IC has blown up so the device detect charger is plugged only when the device is switched on and as i can remembered last time i fully drained the battery and because of the charging PCB IC issue the battery did not start charging
I guess now i might have to replace the charging PCB of the device 😢
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Hi there, I experienced something similar but had some lights come on, I was wondering if you have tried this.
Why are don't my headphones turn on and instead factory reset?
Adam Crane さんによる