TV hangs my entire home wireless network

Sorry but I need to clear this up. I am not having any problem connecting to the internet.  It connects fine and works with all channels.  It will simply hang.  At that point it shows as disconnected.  But more than that, it hangs the DSL modem so all of my 5 wireless devices also show disconnected.  If I simply do a System Restart on the one TV (Settings/System/Power/System Restart) the TV reconnects on it's own and all other devices also start communicating.

1. The issue started about a month ago.  I first thought it was my DSL Modem so I did a factory reset on it but the issue occurred again about a week later.  That is when I discovered doing a restart cleared the issue.

2. No changes to the connection

3. When the issue is happening all channels are affected. Even Network stations are affected.  Broadcast stations are not affected (I use both network and antenna on the TV) except I lose the channel guide

4. Do not have a hotspot to test with

5. No error message ever appears.

One other thing to note.  It has never lost connection when I am actually using the internet channels.  It mostly occurs when the TV is off and not being used and has happened when watching broadcast stations.  The only way we can tell the issue is happening is if using another device and it stops communication or when we do change the TV to a internet channel or look at the channel guide and all it shows is No Information for all the channels.  When the issue is happening the TV does show Not Connected and the Wireless activity light on the modem is solid on.  Again Restarting the TV and it goes back to normal operation.