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Tab 2 now won't connect to home wifi despite strong signal

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http://androidforums.com – Today I made the momentous move from (Time Warner) Cable TV to DirecTV. The installer was trying to explain to me how the Genie system he put in uses wifi to communicate with the other units and with DirecTV. My two android devices are an HTC One V phone and and Samsung Tab 2.0 (7"). The tablet has Android version 4.1.1. I have Wifi Analytics on both devices and they both report a very strong wifi signal as usual in the house. The phone is connected and is problem free. But for the past 90 minutes the tablet won't connect and in settings I get the report of "Signal strength (General)