When I googled this issue, the result came back with a “solved” tag which led me to this forum. Going out and buying a new TV is NOT a solution. My Onn Roku just started this same issue yesterday. I fact, I thought I was going crazy when when I woke up, my TV had turned itself on overnight. Onn/Roku are notorious for forcing system updates to the unlucky owners of these walmart Onn TVs. This is a SOFTWARE problem. More likely than not, the software was corrupted during the update download. Now it is hilarious when the tec says to check your internet connection. Kinda like when Bill Gates used to tell us to Control-Alt-Delete. This started with at5, and then continued with multiple other owners. It is hard to go to Settings for a reset when the Onn tv will not stay on long enough to accomplish. My guess is NOBODY solved this issue. I have another external ROKU Device which connects to a plain tv via HDMI and it works fine. So that tells me it is an Onn problem. Real solution: Buy another tv, just don’t buy Onn. Might also consider Firestick.
