Hello
scenario:
RB2011-RM running super, upgraded to 5.24 and it died.
It was running 5.23 with latest routerboard firmware, perfectly.
Died as:
a) just blue led powers-up
b) no console output (using a cisco cable to my serial port, no output in any speed 9600 to 115200)
c) LCD is off
d) when I connect an eth cable, it lights up on the ports 1-6 only
The unit has been up since november 2012.