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主に無線LANや認証連携などの技術についてまとめるブログです。ネコは見る専。

Opening a UniFi Cloud Key Gen2 plus

AT YOUR OWN RISK, PLEASE. Li-ion battery inside.

 

My 2.5 year-old UniFi Cloud Key Gen2 plus was found dead in the server rack.

No power at all from the PoE.

At a glance, the power seemed okay from the USB-C jack. But, the box was showing "BAD USB-C POWER". (Please also read the botton for a lucky solution.)

"BAD USB-C POWER" message

And this... Oh, dear!

 

Unpacking the box

remove plastic back panel

 

remove metal back panel

 

remove HDD eject slider

 

remove connector

 

Be careful not to break the display when removing it.

remove display panel

 

display panel removed

 

Prepare for a burst.
Go to a safe place or use a metal bucket when sliding the enclosure or removing the battery.

 

remove the enclosure

 

My Li-ion battery wasn't swollen, luckily. Graceful shutdown doesn't work now.

 

view of the circuit board

 

The components are all small. There was nothing I could do.

 

USB-C powering

Cloud Key Gen2 plus requires USB-C power source capable of Quick Charge 2.0 or higher. After buying a QC 3.0-capable adapter, my box has come back to normal operation.

The "time bomb" is still in the box, though.

box in operation

 

Hope your Cloud Key will last long.