They usually check for latest firmware and factory reset the set and try again. For OOW (out of warranty) units I advise to try the wired connection and if that works use wired or some powerline network to keep it tidy.
My tv will, suddenly, not detect my network. It won't even list any avail routers in the area. When I try to scan, it instantly fails. Entering SSID and Password has not helped. Thoughts?

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