C9120 Offline after power outage

[CSCO12971535]

Good night people, 

I have a little problem...

On Wednesday, after a power outage, 3 Aps C9120 were offline (Led off), 2 are in SW-01 and 1 in SW-02, both are Meraki MS120. 

The customer replaced the 3 APs and they went up normally. Today, there was another power outage again and the 3 new APs also went offline (LED off). 

Will there be a blockage? Any protection on the switch? Why only on these doors?

I find it difficult to have burned 6 Aps, even if the boot had been corrupted, the AP should turn on and flash green and red, or light up some correct LED? 

The controller is a WLC9800. 

On the switch the ports are: 

 Status.   Protocol 

Down     Down (not connected)

The environment has a total of 34 Aps C9120, all new!

31 are OK on the controller 

Monday I'm going to the client to test the APs on the bench! 

Help me please...

[Leo Laohoo]

Don't waste too much time asking "what happened" because every 9120AX purchased includes Limited Lifetime Hardware Warranty.

[CSCO12971535]

But it is not acceptable behavior, the other 31 C9120 in the environment are working correctly. This happens exactly in the APs that were changed after the first episode. I agree with the RMA, but I would like to understand the cause!

[Leo Laohoo]

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@CSCO12971535 wrote:
but I would like to understand the cause!

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Raise a TAC case and request (or demand) for an EFA (engineering field analysis).

If TAC refuses, engage the Cisco Account Manager.