What this means

Your Brother printer has a blinking Wi-Fi LED because it is searching for a network or has lost its connection. The printer is not broken. The fault lies in network communication.

Your machine needs a stable 2.4GHz network connection. Household electronics can interfere with and degrade the wireless signal. Router settings, such as MAC address filtering, can also block the printer from joining the network entirely.

Common causes

  • Incorrect Wi-Fi password entered during setup
  • Printer is out of range of the wireless router
  • Router is using a 5GHz frequency band while the printer only supports 2.4GHz
  • Router firewall blocking the printer communication
  • Temporary glitch in the printer network interface card

What to check first

  1. 1Verify that your computer or phone can connect to the same Wi-Fi network
  2. 2Check that the printer is within normal operating range of the router
  3. 3Ensure the printer is not in deep sleep mode

Step-by-step fix

  1. 1

    Restart Devices

    Turn off your printer, unplug your wireless router, and wait thirty seconds. Plug the router back in, wait for it to boot fully, and turn the printer back on.

  2. 2

    Use the Wi-Fi Setup Wizard

    On the printer control panel, navigate to the network menu, select WLAN, choose the Wi-Fi Setup Wizard, select your network SSID, and carefully re-enter your network password.

    Entering an incorrect password will prevent connection.

  3. 3

    Check Router Band Settings

    Log into your router admin page and ensure the 2.4GHz band is enabled, as many Brother printers do not support 5GHz networks.

  4. 4

    Use Temporary USB Configuration

    Connect the printer to a computer using a USB cable, run the Brother printer setup software, and use the utility to transfer your wireless network credentials to the printer.

  5. 5

    Try WPS Connection

    If your router has a WPS button, select the WPS option on the printer wireless menu, then press the WPS button on your router within two minutes.

  6. 6

    Update Printer Firmware

    Connect the printer via USB temporarily, download the latest firmware from the official Brother support site, and run the update tool to resolve network bugs.

When to contact a professional

Unplug the printer before you move it or perform maintenance. Never attempt to disassemble the printer housing, because doing so can damage internal parts and void your warranty. Call an IT professional or your internet service provider if your router uses enterprise security settings like WPA3-Enterprise that require server certificates, or if the wireless hardware inside the printer has completely failed.