Hi there
Recently purchased my Onkyo RZ70 and was having issues with HDMI connection drop out and static noise which was easily audible at 2.5 metres listening position. This seemed to occur when using streaming services native on my Sony LED and then also on my amazon firestick 4K max.
I have a simple setup:
- LED panel eARC to AVR
- Firestick to HDMI 1 on AVR with micro-usb power cable to the AVR USB
- Biamped front speakers only for 2..0
I went through every permutation of trying to rectify these issues in terms of cable tests, changing audio format output, moving my wifi modem/router, mucking around with CEC and many more without making this thread an essay.
Finally, I found the solution to these issues by moving the micro-usb power cable (powering the firestick) from the AVR USB to a dedicated USB adapter on my power board. Viola!!! Fixed!!!
Anyway, I found this super frustrating and I was about to take the RZ70 back to my stockist. Thought I would post this just in case this saves others money, time and heartache.