I am having same issue it'll work fine one minute and go blank the next..I have we box for DVR Comcast blast internet, Amazon tv and a stick also a Nvidia shield all do the same thing but only seems to be with local channels I have a hdhr prime..
I wish you luck in getting this fixed it has been reported over and over again but no fix ... That is one reason I no longer use the HDHomerun software to view livetv.
This is the last we heard from SD Support ...
I’m really not trying to be controversial, but as you’ve stated you are not using SD HDHR for live TV nor movie recording, why are you still using HDHR for recording TV/series? What is the compelling feature instead of Emby (for example).
Emby does not run on WD NAS Devices ... so there
.. I have a PR4100. Right now I do not want the additional network traffic that will be required having EMBY record to my NAS. Emby would have to take the HDHomerun stream to a PC run it through FFMPEG then write it to my NAS. So that is NETWORK traffic coming into my server and NETWORK traffic going out just to record.
Plus the KODI unofficial plugin is better than the HDHomerun App... and works better.