Denon AVR S700W Receiver

My receiver suddenly developed a very loud hum when on. I can still hear the audio behind it. This unit is six years old. I live in Calgary, Alberta and am looking for assistance in repairing it. Where Should I take it.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0