Have you gone through standard setup of the receiver according to the owner's manual?
Have you plugged a standard source into the AV receiver to see if it works properly? Like a game console, Blu-ray/DVD player, cable box, or streaming device?
If you are hearing a 'ticking' out of the speakers, and haven't gone through the general setup of the receiver itself, then that's where I would start. RTFM (if you haven't)!!!