My 830 has had 2 major issues in the last 2 days. The first occurred between 9 PM Saturday and 5 AM Sunday. When 2 programs to be recorded were in the same time period, only one recorded although the other appeared in the PVR list showing one minute recorded but nothing would play back. When 2 programs overlapped, the first recorded normally but the second did not start until the first was finished. I think that this pattern may have continued if I had not noticed that it showed only 2 hours recorded time on a recording in progress when it should have been more than 3. I started to watch the recording and when I stopped after a few minutes, the time now showed correctly. I have had the 630 show the wrong recording in progress time and found that starting to watch was the fix, but if you don't do that, it may not do the recording properly.
The other even more major issue occurred this morning after several power outages. When I noticed a 630 rebooting, I looked at the 830 but of course saw just the power light. As I mentioned before, this lack of signal loss indicator is a serious flaw because when I switched to the 830, there was a black screen with white printing saying something about being in recovery mode and giving me a number of options including reboot and different levels of flushes. I decided to try reboot since this would be the least drastic. The screen went blank and after a few minutes the picture appeared. There was no indication on the front panel that anything was happening except the power light went off for a few seconds. Everything appeared to be normal until I check the upcoming recordings list and it was blank. I checked the guide and it was fine. I waited 2 hours and then phoned Shaw. The technician had me do a power reboot and then a guide flush. Neither of these has fixed the problem. My unhappy wife will have to redo her 50+ recordings. One good thing is that all previously recorded programs are still there, although for some peculiar reason the color coding is gone. All titles are blue. There were 2 recordings in progress during some of the power outages and though there are blanks in these recordings, each recorded to the end of the program. So it survived several outages but it appears the last one did it in somehow.
Hopefully, these are 2 rare occurrences that just happened to come within 2 days of each other.