I got mikrotik (CCR1009-8G-1S-1S+) which does not start at all. There is no enable 3.3V, but 12V is ok. As far as I was able to understand, it should begin from Q1403 (AO4484) managed by U1401. But in none of the troubleshooting documents I did not find the definition of U1401. The worst part is that there is no richtek label on it which can be found by google.
I understand that this is particular question, but I hope, and will be very glad to any help.