Main box fine, but other boxes freeze
The main box with DVR works ok, but the other boxes freeze or go to black. This can happen for 20 seconds or so each time on any channel.
All boxes and router have been rebooted, unplugged and plugged back in. All connections checked and fine. Seemed to begin after a power outage a few months ago.
Customer service by phone is extremely frustrating to deal with and I can’t handle calling them again.