Hi, I recently purchased a used Flex 4K (HDFX-4K). Everything works great except for the ATSC 3.0 channels. Sometimes it works, sometimes it doesn't, getting error "UNABLE TO PLAY CHANNEL: NO VIDEO DATA". Most times if I just flip to another channel then flip back, the ATSC 3.0 channel works. Can someone help with this? I've enabled diagnostic information and replicated my error. Thank you!
Device ID: 10A52660
ATSC 3.0 channels: 117.1, 120.1, 149.1, 155.1
