Well after I wrote this about what I was thinking, I decided to go downstairs and try and plug it in once again (has been about 2 weeks now I think). Well, it powered up so I was obviously excited! However, it looks like the HDMI splitter may be having some issues because I can't get any video out via the HDMI cable. I can see the menu and all that on the display of the receiver but nothing on the tv. I did a micro-processor reset and that didn't resolve it.
So my big question is that now, since it turns on, can I take it to a Denon authorized service center and have them look into it? I'm guessing that wouldn't be covered under warranty repair if things need to be replaced but perhaps the initial inspection would be? I plan on calling a service center tomorrow so we'll see what they say but I was at least happy that the receiver turns on now!