OKC area WEAHD off Air

I powered-off the cable box for two minutes and rebooted. Still the same message.

Cable box in Sun Room works just fine, Cable box in Den shows the error.

Sun Room cable box is the older of the two.

Is the cable straight from the wall to the receiver or is there a splitter? If there is a splitter, I suggest bypassing it. If there isn't, I suggest swapping the ends of the cable, so what's in the wall, put in the receiver and vice versa. 

If it still isn't working, I suggest scheduling a technician to come out and
get this resolved. We schedule 7 days a week in 2 hour time slots, 8-10, 10-12, 1-3, 3-5, and 5-7. If you need to schedule a trouble call, please email me at cox.help@cox.com with the day and time that is best and I will see if it's available.