Problem solved! Fortunately, not a bad HDMI Port! Anthem Got back to me less than 12 hours with a response that seemed to fix the problem: Posted below: (I will not fault him on poor spelling),
Kudos to Anthem Support, they have always been very responsive and helpful when I have had issues.
Hello Robert,
It is unlikely to be related to a bad HDMI port but probably an EDID issue.
Likely what you are experiencing is being caused by the lack of HDMI handshaking which is typically caused by an error with the EDID negotiation between the source device(s) and the display(s) in use. When integrating a unit in between that has no video processing (such as our receivers) the source(s) and display(s) need to report the same EDID value in order for the handshake to complete.
Please ensure the following settings are matching on the sources and ALL connected displays (and are not set to Auto negotiate):
- Resolution supported (1080P, 4K30, 4k60/UHD etc.)
- HDR/Dynamic Range (HDR 10, HDR 10+, Dolby Vision etc.)
- EDID Mode (Projectors, typically labelled as A, B, C and relate to the supported resolution)
It is also advised to connect projectors via the HDMI Out 2 on the unit. If you have a Sony display, please also ensure that the HDMI Signal Format setting is set to Enhanced or higher. Also on LG displays, please ensure the HDMI Deep colour setting is set to On for higher resolutions and colour depth/chroma sampling capabilities.
To make sure that you do not have a DSP conflict please set up your Earc input as follows, this will tell teh AVM 70 to play back all signals in their native foirmat. You can then use the Mode buttoin on the remote to select an alternate DSP as desired.
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