I would like to summarize my problem :) I asked for help directly from TP-Link Poland. The service asked me for a proof of purchase and to send them a "dead" device. After two days, I got a reply...

@TP-Link I have another TP-link router so I could use a different power supply. Unfortunately still dead ...

Hello, I have this router as a backup. He's been plugged in recently and it turns out he's dead. After switching on, nothing happens - the diodes are off. Does it have a fuse inside that can be...