I have an Insignia Roku TV (about 4-5yrs old). I just bought the Roku Express + to upgrade. Everything works except turning on & off the TV. It actually even works my Vizio soundbar (on/off/volume). Which it said it won't. Smh... But I have to use my old TV/Roku remote to turn TV on/off.
I did also download the app. That will turn the tv on/off. So why won't the remote?! Frustrating! I'm not super tech savvy, but I can follow directions. Which is what I already did, so Wth?!
It has to be programmed for a tv, once done the tv power and volume will control the Insignia and not the sound bar. Right now its not programmed for a tv, but the volume keys aren't empty, there are Roku commands that Express+ sees and issues hdmi CEC commands over the hdmi cable.