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Smart TV not connecting to internet

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When I first set up my Smart TV it connected to wifi straight away. The next time I turned it on it still recognised the wifi but couldn't connect to internet. I tried it with a wired connection which worked first time but again, the next time I turned on the TV it can't connect to the internet. I am with BT using their Smarthub.  I've tried changing DNS to 8.8.8.8 and 8.8.4.4 but no change. Please help.

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Hi it took me months of ringing and emailing and FINALLY they sent out a technician who replaced the entire motherboard as he said the WiFi chip is so small and it's a seperate component that runs off the main motherboard that they easily burn out and then stop working.

The WiFi worked perfect for 6 months and here we are again it still plays up but nothing compared to previously.

BUT the only real fix is to get the motherboard replaced unfortunately
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Hi Jamie, Thanks for your reply. In my case (I have a 2019 QN65Q7FNA with a "smart hub") it was the wired ethernet that failed, repeatedly losing the connection to the router and "going to sleep". The only way to "wake" it was a reset all the way back to initial setup which was a consumate PitA. My Wi-Fi always worked but the hardwire Ethernet port gives a superior and more reliable connection. Recently updates seem to have made both the TV and the APPs *much* more stable and reliable, The AT&T Now APP version 3.3.1 is now as rock solid as Netflix (which I hold up as the current gold standard) and the Samsung TV (now at T-KTM2AKUC-12706. BT-5) seems to have resolved the problem with the LAN port "going to sleep". Overall I am now satisfied, however for some reason (I think it is the HDMI standard) the TV does not support a fire stick that works fine on other Panasonic TVs. 

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I have the same problem

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