[Mikendebbie]

This is a screen shot from the Key TV quick start guide. Maybe this thing is automatic and you don’t have a signal booster...in fact the last statement in the quick start says if the cable signal is not strong enough it will automatically switch to antenna over the air TV. The only other test I might try if I were in you shoes is to hook up park cable directly to the back of one of your TVs. If that TV works then you know that either the signal is not strong enough to get thru the Key TV system, or there might be a wiring issue.