Hi, thanks for the response. After Sunday night recordings ended, I powered down the Rokus, Tablo, HDD & router & brought them all back up in the sequences recommended during a problem a few months ago. Magically, of course, the HDD reappeared, and all recorded shows were there. I need to find the threads regarding what all can be done simultaneously, but I don't think I was beyond the limit.
I was recording 3 shows & watching another, prerecorded. I believe the problem began when a 4th show (Shark Tank) began recording. Then, 4 shows were recording, plus I was watching the other prerecorded show, with no problem. Except - I noticed my phone app said "no HDD" while I was checking scheduled programs for the upcoming week. Is that because there wasn't an open tuner to "see" the HDD? But - I was able to access the HDD to delete a show, and thought the "tuner" was exactly that - a tuner to access OTA signals.
So, I stopped watching the recording, and tried to watch live tv. I could only watch shows live that were in the process of recording. Four tuners in use, and none available to access another channel? That makes sense. But, I still couldn't go back to the recorded show I previously was watching while all 4 were recording. Then when I manually ended recording of the 4th show, that 4th tuner remained locked out to me. The HDD couldn't be seen & no live tv available except where the 3 remaining shows were being recorded.
Shutting everything down seems to have worked, but I'm not certain all 4 tuners are working again. Need to test that. Last thing last night, I put the Tablo in remote access mode & opened a trouble ticket. No response to that yet. If this all was just a little glitch of some sort, that's fine, and not unexpected. Stuff happens. But....if my Tablo is dying, one tuner at a time, I need to know.