The problem seems to be solved. It was the modem. I exchanged two capacitors and now it is working. I have no idea why the old router got a connection.

The status screens look like this: SMC 7004 VBR: WR841N:

Log of router SMC 7004 VBR: [CODE]15.10.2015 22:42:12 DOD:TCP trigger from 192.168.2.100:40774 to XX.XX.XX.XX:80 15.10.2015 22:42:12 PPPoE start to dial-up 15.10.2015 22:42:12 PADI sent 15.10.2015...

The hardware version of the WR841N is V9.0. The firmware is up to date (3.16.9). I tried to set up a PPPoE connection directly between my PC and the modem, but without success. Only my old router...

Thank you for your response. The modem is a simple DSL modem. I tried to directly connect the computer to the modem but this neither worked. But when I connect the modem to my old router, which is a...

Model : Hardware Version : Firmware Version : ISP : I want to replace my old router with a TL-WR841N. But the TL-WR841N does not get an internet connection. I tried the following: I connected the WAN...