Is coax from box to TV or do you have a plitter and 1 coax goes to box and other TV?
If from box to TV, there is no need for that. Did you verify source is set to HDMI and not antenna?
Is coax from box to TV or do you have a plitter and 1 coax goes to box and other TV?
If from box to TV, there is no need for that. Did you verify source is set to HDMI and not antenna?