Check to see if there is a software update. My onkyo reciever had one and the clicking was reduced alot.
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I don't own an 80.3 but have read in several reviews about this clicking and that it is normal. However google around the AVS forums and see if what they are describing is the same. Kal sometimes posts here and has an 80.2 which he also reviewed so he may be able to confirm. You should also call Onkyo/Integra If you are concerned