The list of things to try before submitting MikroTik device to RMA procedure.
Device does not power on
Try a different compatible power supply and/or PoE injector.
Device does not boot up
Try loading backup RouterBOOT:
If the device fails to boot up, try the Netinstall tool to reinstall the device.
Cannot connect to the device
Try using a different port to ensure that you are not using the Default configuration’s WAN port. Make sure that the port/ethernet cable is not physically damaged.
Unable to Netinstall the device
Make sure that your setup is correct. Try putting a router or a switch between your computer and the device. More information is here.
Device reboots under load
Try a different power supply. Upgrade RouterOS to the latest Stable version. Reset RouterOS configuration to defaults /system reset-configuration.
Device reboots without any load
Upgrade device’s RouterOS to the latest Stable version. Reset RouterOS configuration to defaults /system reset-configuration.
One of Ethernet port is not linking
Try using a new Ethernet cable and PoE injector if PoE IN is used.
One of SFP/SFP+/QSFP port is not linking/low throughput
|Make sure both ends of your setup are compatible.|
SFP module not working
Make sure that the correct optical cable is used (single-mode/multimode).
SIM card is not recognized
Try a different SIM card and make sure that its orientation is correct. Depending on the slot type, make sure the card has clicked and fixed in place or fully inserted.
LTE does not connect
If the SIM card is recognized, make sure that you have set the correct APN. You should be able to find the APN in your service provider’s webpage.
LTE connects, but does not let data through
Make sure that you have set the correct APN. You should be able to find the APN in your service provider’s webpage.
Missing LTE interface
Make sure your device is a LTE Kit version and the modem is inserted.
LTE modem is not recognized
Install the latest RouterOS Stable version. Contact MikroTik support (email@example.com)
LED is not working
Install the latest RouterOS Stable version, applying the default configuration.
Device’s case is bent, damaged
Look for any damage on the package, even slight cardboard damage could be a result of a bigger damage. Most cases are shipping related damage and you should contact the shipping company.