So, I have the same exact issue. I haven’t had a tech come out yet for two reasons 1. When I called to schedule the appointment, after 15 minutes she still couldn’t open the software to schedule one. 2. Logically it has to be the box since this entire set up worked prior to it. If un-plugging or going online and restarting the box enables me to watch tv; the HDMI cables work. Ultimately I want my old box back. Let me know if ANYONE has any ideas.
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