Tried all of the above without success. Tried bringing up the Source to change the setting to Roku manually (instead of hitting the Home button) That didn't work either. But one time I clicked on another HDMI Port by mistake--that didn't say Roku and not my TV channel--just had blank dashes--and the Roku channel came on! I also noticed that instead of showing my TV channel--Directv --that it said satellite. Each time I would try the Home button but would have to go to the Source to change it. After a few weeks I tried the Home button on the remote and Roku came on. I looked at the sources and instead of Satellite in showed Directv again. So I'm guessing it's something in my TV rather than Roku. I have a 9 year old Samusung.