I have had the issues with black screens on the Joeys where nothing works. A program was being recorded at the time on the DVR so I didn't want to restart the Hopper. I disconnected the power to the Joey and when it came back, it worked "normally."
Both Hopper and Joey viewing result in black screens for 2 minutes when playing back a timer recording of Fox News, then another 2 minutes when attempting to skip in either direction. Fast forward and fast rewind still work, but the reported 15x speed is actually 60x because it will advance or retard 1 minute for every second you hold down the button. If you've had the Hopper/Joey on Fox News (or any program for that matter) for up to an hour, you can rewind to the beginning, again up to an hour. Their advertisement sessions are 6 minutes or longer. I used to be able to hit skip forward 12 times and it would advance 6 minutes, but now if you hit skip forward with more than 1 skip press at a time, it will advance to the end of the recording and you will have to do a fast rewind all over again. It is pretty obvious by now that all of this is to make ad-skipping very inconvenient after Fox News lost its lawsuit against the DVR suppliers including Dish Network. The last H264 (Hopper with Sling) update was 10/19 and the problems began before that. ***This has been going on for long enough for me to wonder whether it is really actually a software error that the engineers haven't yet figured out or, more likely, an actual, built-in feature.***