WRT400N Router suddenly has no apparent wireless signal

Have a 400N wireless router that has been working fine with several wireless devices on a small home network for about a year. Nothing has been changed but suddenly all of the wireless wireless devices dropped offline and none see the network signal in their search to reconnect. All of the indicator lights on the router look good and I have unplugged power and reconnected first the cable modem and then the router but still no signal. Logging into the router seems to show that it is working OK but there is apparently no air signal for the client devices to detect so only the wired devices are showing up. It's as if everthing is working except the antenna function. Are there any suggestions short of uninstalling and reinstalling the whole set up and see what happens? I have taken my laptop to a nearby hotspot and confirmed that it is receiving other network signals fine so it has to be something to do with the router itself. Thanks for any ideas.

Hard reset the router and reconfigure it. See if that helps.

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WRT400N Router suddenly has no apparent wireless signal

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