I had the problem, that WIFI was lost after Idle Mode (1 or 2 hours powered on, but using the tv with other devices), and no reconnection where possible. Only a restart (with remote in settings) solved it.
I tried a lot of things (there was a thread, which now is closed) but now I think I found something. I use a AVM Fritzbox 7530 AX and the default for wifi encryption is WPA2 (CCMP). I changed it to (WPA2 + WPA3). Additional I deactivated "activate AVM Stick & Surf". Don't know what this divice is. But now I have hope.
Maybe someone should check CCMP in Firmware.
Hey there dirkberlin,
These disconnection issues can be difficult to troubleshoot since there are many factors involved, so I'd be happy to help you out. Just to be safe, go ahead and follow the troubleshooting steps listed in this article. If the problem still persists, go ahead and follow these steps as well. If that doesn't help, we can check a few more things.
I look forward to your response, and if you have any other questions or concerns for me, please let me know.