Devolo 550+ Wifi: No LEDs lit

Question

Hello I have the DLAN 550+ WIFI unit, and none of the LEDs light up when powered on.  I connected both units (Wifi and Duo) to the same outlet to facilitate troubleshooting. I also performed a reset using a paperclip. Still no active LED. Then I tried to pair the two units, but nothing happened. The Cokcpit software detects the DLAN 550+ DUO unit but still not the DLAN 550+ WIFI. I also wanted to update the firmware on this unit, but the software does not detect it either. Is there any hope that the unit is not faulty? For your information, both units worked initially but after a synchronization issue, they were no longer used. Due to the current strong recommendation for remote work, I wanted to reuse the powerline adapter, and here is the situation. Thank you for your advice.

jeannets · Answer

Hello,  If no LED lights up, not even the "Power" indicator, it means it is not powered by the 220V  Either there is no current at the outlet... or a fuse or components are blown inside..

jeannets · Answer

Yes, the device you plug into it (mounted) is indeed powered because these sockets are pass-through... But your conclusion is not mandatory... the data connections are made through an electronic board located in the box, which itself is powered by 5 or 12 volts, and it is this small board that activates the indicators... and it may very well not be powered at all, even if your secondary sockets are functioning...  -- Here is the user manual https://media.flixcar.com/f360cdn/Devolo_AG-2664177577-manuel-dlan-550-wifi-fr.pdf  It is worth noting that there are few buttons and indicators... all the finesse of the different commands is based on the duration of the button presses as well as the speed and color of the blinking...  -- The first PLC is connected to the BOX via an RJ45 Ethernet cable... so you can also see the (possible) blinking in the base of the RJ45 sockets... If one of the two is faulty, the connection cannot work...  -- You can also configure your PLCs with a PC connected directly via RJ45 to the PLC... it's much more certain than fleeting presses on the buttons...  -- It should be noted that these types of connections are very capricious and sensitive to the quality and interference of your electrical installation as well as surrounding (magnetic) waves.

Starmin · Answer

Thank you very much for the response. I had a feeling that the Tension presence test was inconclusive because, as you indicated, it was passing through. Honestly, I think the unit is indeed defective. In parallel, I sent an email to Devolo describing all the maneuvers performed and their conclusion is the same. The problem is that the unit is no longer under warranty. So I have to buy another one, compatible with the 550 Duo+.

jeannets · Answer

Yes, that's for sure, but there’s more to life than Devolo... Additionally, I believe they are sold in pairs...?? Otherwise, make sure to buy one that is compatible with the same transmission protocol...  -- I don't know if you're good at DIY..?? but if it's dead, you could open it up; there might be a fuse or a broken wire inside  -- You can also read this https://forums.commentcamarche.net/forum/affich-34942796-cpl-devolo-dlan-r-550-wifi-probleme-reseau  -- You should also have configuration software that came with your powerline adapters  because all of this is subtle... with MAC address and password... did you check all that..??  And to visualize properly, bring them close to you, on the same outlets, in the same room... to enhance the system... you can think about moving them apart later if it works... but not before.

Starmin · Answer

Very good idea "Open the box." As you said, dead is dead, I'm not losing anything. Not too handy, but I'm equipped to test the connections and components. Otherwise, I did check with the config software if the MAC address was correct. But that was for the DUO box, my first idea being to reconfigure the dead box with the config software. But since it's not detected, my approach has stopped. I'll still continue before investing in another powerline adapter. In any case, for now, I don't have much choice.

jeannets · Answer

Normally, if they are one or two meters apart, you should be able to see them on the screen...  Under these powerline adapters, there should be their MAC address and also the generic password.  You could use this software which is quite universal for powerline adapters...  https://www.downloads.netgear.com/files/GDC/XAVN2001/NETGEAR_Powerline_Setup_V3.1.0.4_230-10802-06.zip  to install on your PC, preferably connected with an RJ45 cable... it allows you to see your two powerline adapters with their MAC addresses, restore the configuration, enter the passwords... And view the existing bilateral connections, as well as their speeds in each direction.  Here’s a tool that should help you... if the device is still alive. And also for future equipment...

Devolo 550+ Wifi: No LEDs lit

6 answers

Windows 11 microphone issue

Canon pixma mg printer scanner

Read .doc or .docx files in libreoffice

Computer opening

Small lock on the home screen

Acer nitro 50-650 ...? real? or fake?

Male voice replacing my contact’s voicemail?

Startup issue

File with some lines merged and others not

Linux to replace w10