After a dealer swap out of my first 875, I'm still experiencing an 11-second loss of signal to any of three TVs tested, via HDMI, when changing the resolution through a source device.
This is especially noticeable when changing cable box channels which go from any combination of 1080i, 720p or 480i. According to Onkyo, there should be a maximum of 5-seconds delay when changing channels involving a source resolution change and there should not be a loss of signal during the process. An Onkyo SR705 worked fine in the same AV set-up.
What's the real clincher is even pressing the "set-up" button to bring up the OSD causes an 11-second delay before the OSD is seen. Exiting from the OSD causes the same 11-second delay before a video image is restored to the TV. Even with no source devices connected to the 875 this occurs. Changing the HDMI output resolution (Auto, Through, 1080P, etc.) makes no difference in the delay.
Onkyo is so perplexed by this unusual operation that they are picking-up my unit to perform diagnostics on it at their research department in NJ. If they can't fix the problem, they said they'll replace it. So no AV receiver for a week to 10-days...