Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I need to ask first of all, does the Pioneer VSX821 DVR respond to controls at all, in anything like the usual manner?
And, when you reset it, did it seem to respond and did its display change as it should - or did that seem to have little effect?
If you did not do a power-off reset, try one:
- unplug the DVR.
- leave it unplugged for several hours.
- plug in to power again, only after that much time has passed.
- see if that improves its operating condition at all.
Let me know, please. Thanks.