bang and olufson beolit 17 won't turn on

This is a Bang and Olufson Beolit 17 that charges but won't turn on. I suspected a bad power button, and hoped I could find a suitable replacement. After disassembling, I found that I would be able to disassemble and clean the actual switch and be able to repair it for $0!
If this saves your $800 bluetooth speaker consider buying me a coffee here(lets be honest, it will go to a beer):
www.buymeacoff...
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• bang and olufson beoli...
thanks

[@yannicklerestif5077]

Did work for me, thank you for the very clear and detailed explanations!

[@thecityviking]

I am glad it helped you. Please share on any appropriate forums. Thanks for watching.

[@Kenneth_sniper]

so thanks for you, it really help me fix it up my broken B&O. REALLY THANKS!!!!

[@thecityviking]

I am glad it helped. Thanks for watching! Share a link to my video on any appropriate sites to help out my channel.

[@cbtuacay4310]

The current Beolit ​​20 series has quite a few fake speakers, they are very similar to the genuine product, and can even connect to the B&O app. Will the Beolit ​​17 series be less fake?

[@nicokaiser2816]

I have a Beloit 17 speaker. I had replaced the battery and the indicator is green. But the buttons not respond. I measure the button work, but I have no 3 volts on the button board. Where is the error?

[@nicokaiser2816]

I have another model, I had replaced the battery. The battery is now charged, but when I unplug the usb cable, the Beolit turn off. When I put the cable back again, then I can turn on the Beolit. What's going wrong?

[@thecityviking]

I would start at the battery and trace where the power loss is. Check for pinched or broken wires

[@thecityviking]

Sounds like possible battery capacity issue. Can you remove and load test the batteries?

[@nicokaiser2816]

@@thecityviking I measured the cable, there are no broken wire. The battery is charged and the B&O app, display 100% and the light is green. The battery have 8,2 volts. The other model has the same symptoms but when the battery is full charged und the usb -c is connected then blows up the diode D16 near the data connector to charging port. I have two Beloit 17 model they have problem with the power system.

[@nicokaiser2816]

@thecityviking Update, so I have voltage on the buttons now. I replaced the D16 double diode (KL3), the capacitor C158 (the part was shortened) and I replaced U10 the voltage regulator. My Beolit turns on now, when the usb-c cable is connected. The battery is charged, but when I pull the usb-c cable, the box turned off. What is here the problem? Maybe the battery management system?