TV shuts off randomly and then restarts. Is this another Nextbox 2.0 issue?
Hmm.. if its just the TV.. not so sure its the nextbox then.. sounds more like a TV issue.
Question.. do you program the rogers remote to do your TV on /off as well?
If yes.. i would go swap the remote for a new one, unprogrammed, and NOT program it to your TV.. i am wondering if its some how when doing other stuff, sending a POWER OFF command to the TV as well.
Really at this point.. its process of elimination.
Try swaping the HDMI cable if you can.. some TVs support power on/off and other commands via HDMI.. while i dont think the rogers box sends these commands.. COULD be interpreting them wrong. Worth looking to see if there is a setting to turn this off if there is one in the TV.
Swaping the remote, keeping it unprogrammed, and try that.
That you have had 3 boxes.. i dont think its the box specificaly doing it... or at least on purpose (in the case of the TV mis interpreting a signal, etc)
Could the tv be overheating now? I believe some newer tv's have a thermal shutdown chip that will turn the tv off before it becomes "cooked" to somewhat save the tv.
Means the tv is on its way out... could be as simple as replacing thermal paste on any heat sinks that might be inside the set.
I myself have had MANY MANY boxes, and still do have a decent combination of boxes... and not one of them ever caused my tv to shut off.
Also, remove the batteries from the remote when watching (or ensure brand new batteries are installed) to rule that out.