Are you seeing error codes or error messages?
I would suggest you keep the service visit you have scheduled. If the problem is wiring within your house Comcast may charge you. If the problem is your hardware or wiring outside the house Comcast won't charge you.
Remember unless you have Comcast's monthly protection package, we are all responsible for the wiring within our homes.
boomer666 wrote:I've got the same X1 mini cable box connect issue. I swapped all components at least twice (including the X1 mini). I then thought the problem was with the cable-in connection to the room, until I replaced the X1 mini with an unused DTA box (using the same coax cables) and got a cable signal. I then moved the X1 mini to another room and got the same "can't connect" issue. Primary TV with DVR works fine. I think the issue is that the X1 mini can't connect to the DVR. I've scheduled a service call (and will no doubt be charged by Comcast). I've spent way too many hours debugging this issue. I would have kept the original DTA if I knew it was going to be this much of a time drain. Tech support wasn't much help ... reset and/or power cycle all devices. Has anyone with this issue resolved it without requiring a service call? A frustrated Comcast customer!!