Switch 3850 switch member got removed from stack

[Pullap]

Hi everyone,

Please some body let me know what was the root causes of switches member got removed from stack.

And how to re-add into stack.

Please advise.

Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active b4a8.b9f8.1d00 15 V03 Ready
2 Standby b4a8.b986.6780 14 V03 Ready
3 Member 0000.0000.0000 0 V03 Removed
4 Member b4a8.b9f8.1280 12 V03 Ready
5 Member b4a8.b9f8.c580 11 V03 Ready
6 Member b4a8.b9dc.7f00 10 V03 Ready
7 Member b4a8.b9f8.1c00 9 V03 Ready
8 Member b4a8.b96d.4880 8 V03 Ready

Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 OK OK 2 8
2 DOWN OK None 1
4 OK DOWN 5 None
5 OK OK 6 4
6 OK OK 7 5
7 OK OK 8 6
8 OK OK 1 7

[Predrag Jovic]

Switch power supply failure, stack module failure, stack cables removed etc... Stack module connectors are not detected. Looks Sounds like member switch is powered off or broken.

Power on device if it is powered off, or replace it with functional device (functional parts, plug in stack cables etc).

[Pullap]

in the front of device no LED light is show up.  look like the devices was broken.

[Leo Laohoo]

Check the power cable feeding power to the power supply. If it's loose ...

[Leo Laohoo]

From the output it looks like the appliance has either failed or lost power. Stacking cable isn't an issue.

[Predrag Jovic]

If stacking cables were removed from switch No3 output would look exactly the same as device lost power or device is broken.

[Pullap]

Stack cables were the same position that I implement before.
This project I have done for 2 months already, and the last visit customer I notice that one switches has been down.

[Pullap]

Should I open the case with Cisco to claim the new devices?

I have try to unplug/plug the power cable but seem the result is the same.

Thanks,

[Predrag Jovic]

in the front of device no LED light is show up.

If device is plugged in socket (if you tested that both ends of cable are properly plugged and tested different electric socket just in case) and no signs of life - device (or maybe just power supply) should be replaced.

[Leo Laohoo]

Then raise an RMA.