Wi-Fi & connectivity

[Acraft]

I have 3 Roku tvs 1 decided it doesn't want to stream anything. I tried doing update itvsays can't do update now try later. When I go to internet connection ot shows connected wireless excellent strenght all 3 checks. But when I do a test connection it days no wireless found. I can open hulu n neflix etc and sign on but as soon as I go to pkay something it says I have incurred a problem.and it will not pkay. I don't know how to fix it. 

[renojim]

The first thing to try is a "System restart" from Settings->System->Power or just unplug the power cord for several seconds.

[Acraft]

Unplugged TV and pmugged back in and atill did the same thing

[renojim]

I hoped that would work since it's the easiest thing to do.  The next easiest is probably to restart all of your network equipment - gateway/modem/router.  Try doing the same think.  Unplug each for a few seconds and then plug them back in and then after a few minutes plug in the TV.