Why does my Acer Iconia only occasionally cconnect to my WiFi router?

[AC Question]

I've just got a refurbished Acer Iconia Tab 10 A3-a20 which will only connect to my router very occasionally and is not detected at all most of the time. I also have a Roku stick connected to my TV and the tablet finds that without any problems. Would I be able to connect with that instead? Obviously the Roku has the same password as the router ( Asus RT-N66U). I would also like to mention, that my Sony Xperia Z3 and my Sony Vaio laptop both connect without any trouble at all every time I switch them on.

 

[B. Diddy]

Welcome to Android Central! Have you already rebooted the router? See this guide for more ideas: http://forums.androidcentral.com/am...roubleshooting-wi-fi-connection-problems.html