I noticed this for the first time earlier this week, I changed the channel..I had a picture for about 2-3 seconds and the screen went completely black - but I still had audio. I simply went back to my last channel and had a picture again. (At first I honestly thought my new TV was starting to act up. No, not the case)
Last night (Mar. 20) I went to access my "On Demand" - which is always a joy on my DVR -sarcasm, it always has been sloooow loading on my DVR - and poof, my DVR shutdown and did a reboot.
Since then, I will change channels, screen will go black. (Thankfully it is NOT my TV, I hit Menu and see that...but no picture) So I literally have to go back to last channel, then go back again to watch what I want to watch.
Any suggestions, last time I called Verizon for DVR issues like a looping reboot - they would fix it by clearing cache - , hard reboot from their end. Calling now, well the wait time is long. I get it...most everyone is home, LOT of tv watching, perhaps more issues and tech support is needed.