Now it just started to fail once again!
It won't detect any wireless network, while any other device will (as another samsung Smart tv placed in another room do).
I uselessly tried to reset my tv to factory setting entering service menu and tried to unplug power supply for several hours as well but no way, wifi still fails.
Tried connecting with ethernet cable and it works with no problem so It's confirmed it has to be wifi module issue.
Twice in just one year? Possible?
Exact module model is bn59-1148b, bn59-1148a and bn59-1148c would be compatible too?
Firmware is samsung last official one, 2007.0, I guess issue was related to some smarthub update since it started with last automatic smarthub update...
Is there anything else I could try before giving up and replace wifi module?
Maybe remove it, start tv without it and then try reinstalling it again?