Hmmm. You say that the receiver was working okay. When did it stop working? Was it in your system and then just didn't work one day? Did you have it in storage for a while, take it out, and discover this?
My Pioneer VSX-1015 wouldn't turn on one day, just out of the blue. I unplugged it for over a day, and it still wouldn't turn on - until I tried to turn it on using the remote control. Strange, indeed, but it's worked fine ever since. Unplugging something for a while can sometimes help.
Also, look at the manual and see if there is a way to reset the unit.