I have Mikrotik 951ui-2hnd which works around an hour after that turned off and did not powered up.
I think there is some issue with it because through all that time there is no electricity beam.
Power adapter is tested and it is ok. I tried to powered the router via PoE and with another adapter but no success.
As i told you i tried to power it via jack, several different jacks and via PoE as well - no success
I wrote to support and the result is [Ticket#2014111066000696]
The router was a gift from Mikrotik on their MUM event in Sofia.