Problem with RB951G-2HnD

Hello, I have problem with my RB951G-2HnD. Yesterday everything was ok, but today the router looks bricked. This happens for the second time for the past 3-4 months.
Symptoms:

  • Wireless led is not lighting at all
  • only port 1 is green but is not blinking
  • restarting RB951G-2HnD doesn’t help (beeps does not occur)

The last time this happened I did reinstall RouterOS using NetInstall tool - it preserved my configuration. But I cannot find any logs to see what happened.
Is there a way to connect to the router via serial/usb to see what’s board’s current state?

Regards,
Petar