I am having similar problem with box in bedroom. I have had nothing but headaches since upgrading to X1 DVR in living room and companion box in bedroom. Bedroom box stopped working after tech was here on Sunday. He did something and Comcast telling me the signal is strong between the boxes when the check. Next step is to switch out to a sepearate box that doesn't communicate with DVR. I was told to go by a Comcast location and pick up a box, problem is they all close by 5 p.m. or 6 p.m. Tech coming again on Saturday morning - third week in a row I've had to have someone come out. Really sorry I upgraded even though I really like the system when it works, which hasn't been very often. I've only had it a month.
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