modified on 28 April 2011 at 13:08 ••• 71,784 views

RouterBOARD Troubleshooting

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This page describes methods of testing if a RouterBOARD device has troubles. Before contacting support, or RMA department, please carefully try ALL of the mentioned methods:

Contents

Can't connect over IP or MAC

  • Try to connect over a different ethernet port
  • Try another cable
  • See what is output on the Serial console (next sections)

Boots, but stops loading after BIOS info

  • Check if the baud rate of your terminal program is set correctly, usually it's 9600 or 115000
  • Try using mac-telnet, or mac-winbox to connect
  • Make sure your RouterBOARD's BIOS is set to boot from NAND
  • If all else fails, hold the button next to the LEDs to load backup BIOS

Starts, but an ERROR interrupts loading of RouterOS

  • Enter the BIOS, set it to boot from "ethernet, then NAND" and reinstall OS with Netinstall. In most cases, it will not hurt the configuration or license.
  • Examine the error message and see if it's meaning leads to a logical solution
  • Contact support with the error message

No information on the console output

  • While turning on the device, hold the button next to the LEDs to load backup BIOS
  • Check if the baud rate of your terminal program is set correctly, usually it's 9600 or 115000
  • Check Power jumpers, are they set according to the manual?
  • do any LEDs blink or turn on? Clarify their meaning with support

Wireless card problems

This article shows how to determine whether R52, R52H or R52Hn card was damaged in storm

Operational Problems

CPU load 100% or slow traffic speeds: Check traffic coming to/through router with Torch Tool. Disable interfaces. See if a P2P user, or an attacker is not causing it.

Wireless card disappearing: Check if the pigtail or something else metallic is not touching the wireless card's metal parts.

See also