I've had my Roku Stick, model 3600X for a year when it just suddenly stopped working. The TV doesn't recognize it and only says "no signal." I've tried it on other TVs and it does the same thing. If anyone has any suggestions please help! Roku Streaming Stick (3600 series)
The first suggestion, as always, is to make sure you're using the supplied power adapter. If you're already doing that, try another one you might have for a phone or tablet especially if it can provide at least 1 Amp. Heck, even give the TV's USB port a try.