Samsung Smart TV UN55TU700DF does not recognize ROKU stick and will not connect
When I turn on my Samsung Smart TV with the ROKU stick connected to HDMI1 or HDMI2 it says it is unknown and will not connect. There is a little red button beside it that looks like an on/off button, leading me to believe it thinks I need to turn the stick on????. When I select troubleshooting I don't see anything for a device that I recognize as a ROKU device. These are the selections: Audio Device, Video Device, Smart Phone, PC, Input Device, Game Console, External Storage. The Video Device shows HDMI and HDMI troubleshooting, but when I select troubleshooting I am expected to turn on the Video Device and there is no way to turn on a ROKU stick. The Input Device list shows Keyboard, Mouse, USB Graphic and Bluetooth Device.... no HDMI listed. I currently have a DISH Satellite system with a Hopper. It was connected to HDMI1, so I connected the ROKU on HDMI2 first. When it was not recognized I tried to find advice online. There was an article that I read that said to try the other HDMI port. When I switched the DISH to HDMI2 and connected the ROKU on HDMI1, both HDMI connections are now marked as unknown but the DISH system still works. Like I said earlier the ROKU stick is not recognized on either HDMI port. FYI: The serial number of the Roku Stick is C237C7955115 and MODEL 3810X.
You lose me at “little red button beside it that looks like an on/off button”. But… I assume the Roku is powered up? (Generally, you want it to be powered by a USB/AC adapter connected to the wall – sometimes a TV USB can work – but not always.) Have you tried pressing buttons on the Roku remote? Ie: try the Home key. Some Rokus have a sleep/low power mode that does look a lot like “off”.
