Watchdog timer not working

Hi

I had one of my ccr’s dye last night, just locked up

/system watchdog> print
watch-address: none
watchdog-timer: yes
no-ping-delay: 5m
automatic-supout: yes
auto-send-supout: no

why didn’t this kick in ? I’m not watching an address but I do have the timer on ?

should have I expected this to have auto restarted.

When I got to the box the touch wasn’t working, so it had died hard. also no activity on the ports either