FRITZ!Box 4040 Serwis - Baza wiedzy

FRITZ!Box 4040 Serwis

Constant restarts: Several LEDs flash

The FRITZ!Box constantly restarts. When this happens, all or several LEDs flash continuously. The FRITZ!Box user interface cannot be opened and all or individual FRITZ!Box functions do not work properly.

Important:If the FRITZ!Box occasionally restarts, proceed as described in this guide.

Simply proceed as described below. After each measure, check whether the problem persists.

1 Restarting the FRITZ!Box

  • Unplug the FRITZ!Box for 5 seconds.

    Note:The FRITZ!Box settings remain intact. The restart will take about 2 minutes. During this time, you cannot access the FRITZ!Box.

2 Using the correct power adapter

One of the most common causes of error is the use of an unsuitable power adapter for the FRITZ!Box:

3 Testing whether a USB device is interfering

The problem may be caused by a connected USB device:

  1. Remove all USB devices from the FRITZ!Box. If the problem no longer occurs, either a USB device or its cable is faulty, or a device consumes too much power.
  2. Reconnect the USB devices to the FRITZ!Box one by one to find out which device causes the problem.
  3. For testing purposes, use a USB hub with its own power supply (active USB hub) to connect the device causing interference to the FRITZ!Box.
  4. If the problem also occurs when using it with an active hub, replace the USB device.

4 Resetting the FRITZ!Box

If the problem still occurs, the FRITZ!Box is in an error state: