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Bluetooth wireless headsets used to connect to phones and computers.

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Sennheiser HD 4.40 BT Not charging.

I all started last month when I forgot to use the headphone for a week. So, when I tried to power it on, it wasn’t switching on. When I tried to put it in charge, there was no indicator, but I felt slight heat on right side of the headphone. I left it for few hours, then it started working, but after 2-3 hours it abruptly shut down without any warning.

Now I again tried to charge, but there is no indicator. but I left it for few hours and then it worked. This method worked 4-5 times but there was never a charging indicator.

But now it stopped working completely. I still can feel it, but it doesn’t power on. I can use it via aux cable but unable to use it wirelessly.

My hunch is something wrong with battery. What do you think? How should I proceed?

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Having the same issue. I got one replaced last week which had the same issue. Now it ended up again not charging and not turning on. I have no clue what to do.


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Hi @vikaskr ,

Start off by replacing the battery (supplier example only) and check if that resolves the problem

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Vikas wird auf ewig dankbar sein.
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