Cisco 5508 WLC does not boot.

[sergiypaliy]

Cisco 5508 WLC does not boot.
When connecting through the console, the following appears on the screen:
_________
WLCNG Boot Loader Version 1.0.20 (Built on Jan 14 2014 at 11:40:45 by cisco)
Board Revision 1.3 (SN: ***********, Type: AIR-CT5508-K9) (P)
Verifying boot loader integrity... OK.
OCTEON CN5645-NSP pass 2.1, Core clock: 600 MHz, DDR clock: 330 MHz (660 Mhz dat a rate)
FPGA Revision 1.7
Env FW Revision 1.8
USB Console Revision 2.2
CPU Cores: 10
DRAM: 1024 MB
Flash: 32 MB
Clearing DRAM........ done
_________
Everything stops there.
At the same time, indicator PS1 lights up and indicator SYS flashes.
Experts, please help, how to solve this problem?

[marce1000]

 - Most probably the device has a fatal hardware problem ; last resort measure is factory reset procedure and try again, if no result then the 5508 needs to be replaced (RMA)

 M.

[sergiypaliy]

Thank you for your reply.

As far as I understand, the factory reset procedure is started by the "reset system" command CLI. But there is no access to the command line. Is there another way to do the factory reset procedure?

[Rich R]

> Is there another way to do the factory reset procedure?
No, as the system needs to be able to boot.

[Leo Laohoo]

Pop the lid and see if the CF is missing. 

[Rich R]

And try re-seating any pluggable components (memory, flash, modules) while you have the lid off.

But most likely this is hardware failure and you need to replace it.
You cannot RMA it because it is already past the Last Date of Support:
https://www.cisco.com/c/en/us/products/collateral/wireless/5500-series-wireless-controllers/eos-eol-notice-c51-740221.html
so you could try looking for a second hand replacement or think about moving to new, supported 9800 series WLC or whatever new solution you have planned.