Can't get 4K channels on my RCA 4K Smart TV Model RNSMU5836

[MICHAELACOLE]

I recently purchased a 58" RCA 4K UHD Smart TV. The HDMI ports are labeled HDCP 2.2 (one is also ARC capable). The Ignite TV box is plugged into one of the non-ARC ports.

I have gone into the TV settings Feature menu and enabled HDMI EDID 4K, but when I try to select a 4K channel the display indicates that the system is not 4K capable. I have run the Internet Update on the TV and it says that it is up to date.

Any suggestions?

*** Edited Labels ***

[Lurker_Returns · Accepted solution]

What are the display settings on your Ignite TV box?

[MICHAELACOLE]

2160p60 4K UHD is listed as best available but is not being auto selected. I just manually selected it and it worked this time (wasn't working earlier). Let's hope it stays that way. 4K UHD is still showing as Undetected under the display icon.

[MICHAELACOLE]

One additional note. The "Undetected" label under the display icon in the Video settings on the STB seems to indicate that the TV brand is undetected, not that 4K capability is undetected. I have another non-4K TV and the STB there displays the brand name of the TV along with three available non-4K resolutions. The STB on the RCA shows five available resolutions, two of which are 4K.