I've had Rokus for years, from some of the earliest models, to the three Roku 2 XS (model 3100X) that I currently use. I recently signed up for Sling TV, and used their promotion to get a Roku 3 (model 4200R) for half price. Today I decided to install it on our family room TV, since it gets the most use.
The first issue I had was the Roku 3 would not respond to my universal remote, which had been programmed for a Roku 2. At first I thought maybe the Roku 3 only used Bluetooth, but I found posts that said all models still support infrared as well.
I thought maybe the Roku needed to be repositioned, so I went to move it when I discovered issue two. The unit wasn't exactly hot, but it was very warm. I've never had any kind of heat issues with any of the other models. I did notice that the Roku 3 runs on 12 volts, while the older models I have all use 5 volts.
As I was testing it out some more, I noticed two other things. First, the infrared remote does work, but I have to be no more than five feet from the Roku; any farther and it doesn't get the signal (I've never had a range issue with other Rokus). Second, I have an infrared receiver for my HTPC right next to the Roku, and the LED on it was blinking like crazy, indicating it was receiving a ton of infrared signals. As soon as I unplugged the Roku 3, that stopped. It would seem that the Roku is throwing off some kind of infrared, or infrared like, signal that the HTPC receiver was picking up. I'm also wondering if that's why my infrared remote would only work from close range.
Has anyone experienced any of these issues, and were you able to resolve any of them? For now I just swapped my Roku 2 back in.
Thanks for your help!