Hello, first post here. Had the same problem as described above. I tried the checking voltage of the power adaptor but it was OK- 12.9v DC. I tried swapping this adaptor with that for the cameras (same voltage & amperage output BTW- 12vDC, 2A) but problem still the same, therefore problem must be with DVR itself. I had no footage I needed to keep so I did a full HDD format just to try & it worked. Checked after half an hour or so of recording & the footage was good & the red light was blinking away. Remains to be seen whether the problem is permanently gone or whether this is the start of the death of my HDD but its only a couple of years old so I hope not. Maybe we had a power dip or spike for some reason & the DVR didn't like it.
