looks like you have Key-TV.
and if I understand, you have satellite working in the livingroom and bedroom.
Great! you are ahead of the game!
Now you are down to the on-air OR cable feeds. (can't have both)
Since there is only one cable that feeds both to each (LR and BR), it is probably the diplexer (wall plate) that is the issue.
Try swapping the 'wall plate' between the LR and BR. My rig also has one in the basement...
also double check all the connections on the back of the Key-TV unit and the TVs.
Hope this helps,