I am assuming you did a rescan of the TV using the cable setting (required because your TV uses a different internal tuner for cable called CAMS). During the scan you must select cable instead or "air" or "Antenna".
Can you see all the cable channels snowy?
If so, you may have a bad cable, splitter, or, cable connection in the walls (which is not unheard of).
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
|