I just can not come up with a explanation of why a relay needs to be flipped when you’re not changing anything. If it were the source material switching from 2ch to 5.1 and back it would happen at low volume as well as high. The only other reason (for a relay) I came up with I eliminated the second I thought of it … as no sane designer would use a relay to control a fan. If it’s not a relay … perhaps it’s a heat issue or a electromagnetic issue … in any case IMO anything clicking when nothing is change is either a design flaw or a defect.
If Onkyo claims otherwise then I’d love to know what it’s doing … after which I’d recommend getting a different receiver
