Cube Mix Plus – Can't Power On

[Chris G]

Seems like a hardware fault of sorts or the battery controller. Try unplugging it, this involves opening it of course which isn’t for everyone.

Chris | Admin
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[Hualalai]

1. Try a different charger.
2. Check voltage on battery (voltmeter on charging port pigtail).  Battery could be charged, but VR is bad.
3. In battery is not charged, replace the battery.
4. If no joy at this point, recycle the device.  You just lost the Shenzen lottery.

[Cicatrix]

@Hanz Did you have any luck? My MixPlus has the same symptoms right now.

[Frantzisone]

me too the same problems.

[Hugh]

My Cube Mix Plus has a problem like this one.

The battery was no longer charging when AC power supply was connected.

The system continued to work until the battery was discharged.

No sign of life since then.  The LED is not on.

I tried another AC power supply.  No difference.

I left it on my shelf for several months — I didn’t know what to do and I didn’t have time to do it.

Just now, I tried a USB C charger (designed for another computer — it might not be powerful enough).  LED doesn’t light.

I opened up the Cube Mix Plus.  I measured 12+V between the terminals of the barrel jack.

I don’t know where else to test.

Does anyone have a circuit diagram?  This thing doesn’t seem to have an FCC ID so I cannot look on the FCC database.

Any suggestions for how to proceed?

[Hugh]

Just to make it clear, I measured the voltage on the connector on the board, not on the AC power supply.  So the board was getting 12+v.  I don’t know how it is supposed to be distributed on the motherboard nor appropriate test points so I didn’t do other measurements.  Recommendations welcome!

[riceart]

“I measured 12+V between the terminals of the barrel jack” that 12v is not important. What kind of usb c charger did you tried? It has to be charger with power delivery 24W minimum.

[mobby_6kl]

Probably way too late but this sounds like the typical symptoms of an over-discharged battery where the circuit will refuse to charge it: https://www.youtube.com/watch?v=USiHsce4vbU

The fix is to charge it manually a little bit with a power supply (or replace it, obviously). Could be something else too but this seems to be the most typical issue.

[Author]

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