Perform a Network Diagnosis
Depending on your TV model, the procedure to peform a network diagnosis is the following:
For models released in 2017 and later
For models released in 2015 and later
Which connection result is displaying?
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Wireless connection diagnosis shows all accesses failed. (Failed/Failed/Failed)
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Wireless Device is found but Local Access and Internet Access failed. (found or OK/Failed/Failed)
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The TV is connected to the local wireless network but not to the Internet (found or OK/OK/Failed)
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The TV cannot access an Internet video content even if though it is connected to the Internet.
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All connections diagnosis are displayed as OK, but I still have an issue. (found or OK/OK/OK).