Hi im sorry I cannot confirm the motherboard, but I do have an idea that might be easier. Why not buy a smart TV stick like from Amazon or Roku? It will be less money and you can try it quickly and return it if you had to. My fear with a motherboard is if there is a version that works and older ones that do not. This could end up being a frustrating exercise. In my case, I have a android TV box connected and its like a mini PC, as it has access to all android apps, browsers and a BT keyboard. Yes its one more device, but it has more Smarts than any smart TV. The truth is that even if my TV wifi worked, I still would use my Android box as its more versatile.
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HI everyone. This could end being a long reply, but ill try and keep it simple. Im here as I also have all the symptoms described with Wifi while a lan cable direct to the TV works fine. However my home network is a bit strange as I have 2 routers in place and added another just for testing the TV. summary of results when trying to connect my UE406400. I should say that all routers connect to the internet and have many devices connect to them and working Router 1 BT home hub 5 : sometimes not see the Wifi network sometimes connect to the Wifi but not see the internet through the router. Router 2 Asus AC66C Can NOT connect to the Wifi at all Router3 TPlink VR2600 Connects everytime and stable. for anyone that is still interested... The BT home hub is connected to the telephone line so is the main connection to the Internet The Asus Wan port is connected via a LAN cable to the BT hub . The Asus is setup as a VPN router so that I can connect to a VPN with some devices while other devices can connect to the BT home hub at the same time. The TPlink (set up for this test) is connected via a lan connection from the Asus to the TPlink wan port. Phone line >>>>>> Home Hub5 >>>>>> Asus >>>>>> TP link so the 3 routers are connected in series to the same single internet connection to my house. This tells me that it is not the internet or how the internet passes through the routers, but rather something in the Wifi compatability. for those that know the TPlink, this router can replace the Home Hub and this was my setup till 2 weeks ago and it also works with the TV. The reason I dont leave it this was way is because the TPlink has problems with the RING doorbell so went back to the BT home hub. so looking at all the replies, the new motherboard may be a new Wifi module that works and some of you have used extenders which is maybe why some work and some dont as its down the the Wifi electronics. Also maybe some of you have seen things change as maybe there was an update to your router or to the TV that killed the compatability (there maybe something is the advanced settings for Wifi such as the encryption, but I could not see what) I have been thinking about buying a newer Home Hub 6 of ebay and if I do then I will test it, but right now, I can not justify another router. If I was to offer any advice to someone suffering and cant get a new motherboard, then id look for something like a TP link access point to connect your router, this can give you Wifi in another part of your house while also being able to connect to your TV. Im not sure if there are any Samsung Techs that watch these forums, but if they do and want me to test anything then im available. Hope this helps in some way to those that can try another Wifi device. In my case, im not sure ill leave the TPlink connected as its overkill for this use, but maybe ill use a Ethernet over mains adaptor (such as powerline) and then just connect a lan cable, as I have one spare. Regards TK
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