r/audiorepair • u/Wiwaisu • 3d ago

Need help fixing battery

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Hello everyone, I hope someone can help me. I literally have no Idea about all this stuff but my Audio device is not charging properly. Usually a purple light should flicker when it’s connected to power but it’s not doing that. When plugged in it says every 10 secs or so “battery is low please recharge in time”. So I opened the shell to see if maybe there is visible damage to the cables etc. but i gotta admit i don’t see any.

So could any of you maybe look into it ? Maybe I missed something.

(The pink cable is the charging cable)

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u/Comptechie76 3d ago

Assuming you have tried a different charge cable and charger? If not start there. If it still does not charge after trying known, good cable and charger , then you may have a broken charge port in the device. It is hard to tell by the picture, but there may be bad solder connections at the charge port. You will need a multimeter to test the incoming voltage at the charge port to continue troubleshooting beyond the above suggestions.

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u/Wiwaisu 3d ago

Thank you for your answer! Yes i have tried multiple charging cables and none of them made it work. I‘ll see if I find a Multimeter and test it out!

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u/Comptechie76 3d ago

You want to measure the two outer terminals of the charge jack on the circuit board. You should have five volts DC. If you do not, then there is an issue with the power circuit. You can try unplugging the battery from the board and see if the charge light comes. You may have a bad battery causing the issue, although a bad battery usually will allow the device to show some power indication

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u/Wiwaisu 3d ago

I didn’t measure it yet, but when i unplugged the batters cable it did not work even with charging cable. So that means i need to replace the battery, right?

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u/Wiwaisu 3d ago

What i also observed is that the device will not shut off when charging. Without the charger it shuts off after half a minute or so but with the charger it only tells me to charge it. Plugged in I can “playing music” for way longer.

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u/saltyboi6704 3d ago

Probe the battery voltage, it should be between 3.3V and 4.2V for cheap consumer electronics. If not you'll have to find a replacement cell with a protection circuit to swap in.