Fritz!Repeater 6000 in boot loop

[Fiuz]

First of all, apologies for not using German but I am not a native speaker.
I have found this forum while searching for a solution to my problem, as you all seem very knowledgeable.

All of a sudden I realized that my WiFi network, provided by a Fritz!Repeater 6000 in cascade to the ISP's router, was gone.
I checked the device and the two LEDs were on as usual.
I tried to access it via LAN cable but it was impossible, the client OS reports network cable disconnected.
I rebooted it, but the WiFi network still does not appear.
I tried the recovery .exe, but the cable still shows as disconnected and the program can't find the repeater.
I have tried restarting it with the WPS button for 15 seconds but nothing changes, several times, but it does not restart.

It appears as if the repeater is in boot loop, because it seems to start up but then restarts again and again.
Both LEDs light up, then Connect flashes for a while and then restarts. Then both LEDs come back on, etc., it goes on and on.

While this happened I was sleeping so there were no recent changes or updates.
What can I do in this case? This sounds like a serious problem, none of the procedures I have tried have worked.
I can post a video of the device restarting if useful.

Thank you!

 

[chips]

i think your Repeater has a HW-Problem - i have seen some of this devices with this kind of failure;
mostly there is an problem with the WiFi-Chipset, especially clock generation with the both QCN5054 chips;
as i guess, the clock for the lan interfaces is coming from the QCN5054 Wlan Chip, so the LAN Interfaces are also not working, if clock from QCN5054 is missing;
you should check, if you get the Repeater6000 exchanged per warranty
Rgds
Chips

 

[Fiuz]

Thank you very much, Chips. I suspected so because not even the hardware button reset is possible.
I contacted AVM, let's see what they tell me. The device is less than two years old.