I was having some work done on the house and they accidentally cut 2 of the 3 coax lines going into the house, They were spliced back together, and all seemed well. Now I notice both hoppers show lost signal on Tuner 3, Is this just a bad coax splice? If so what is the best way to check the coax? I assume the receivers should be unplugged before disconnecting the connections. It is getting annoying to have programs scheduled to record, and they try to record on tuner 3 and fail.