Originally Posted by txbonds
No, it isn't unfortunately. I bought it as a refurbished unit from accessories4less a few years ago. Refurbished only comes with a 1 year warranty. Has worked flawlessly up until this and still works for everything but sound as the amps are not turning on. Since it wasn't under warranty and I don't have a Denon service center anywhere near me, I just picked up a lower end model locally and have been using it for the past few months. It seems to be serving our needs just fine as the 4520 was way more than I actually needed.
Anyway, thought someone might pop up with a quick "oh yeah, that is a common issue" type response that gave me some direction. If it is a cheap fix, common issue type thing, I might would just sell it as is, but didn't know.
If under two years check to see if the credit card you used extended the 1 year warranty by another year....