OK. Next suggestion is to try it in a different power outlet, and/or trying it on a different TV. Simply trying to eliminate the variables. If it still doesn't work on different power or TV, then I'd try a hard factory reset. There's a recessed button somewhere on the stick. While it's plugged in and connected to the TV, press and hold that button for a minimum of 30 seconds. Not one second less, regardless of what you might see on the screen. If it starts back up in setup mode, you should be fine. Just set it back up like when it was new. All your previous channels will reload, but you'll need to enter any login credentials in channels that require it.
If that doesn't resolve the issue, then it's likely defective, and I would send your information to @RokuDanny-R via a private message (not here in the public forum) and he can assist.
Dan
Roku Community Streaming Expert
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