Originally Posted by dkojevnikov
Thank you Bob. First I will try to buy a pair of better cables (OPPO->Anthem->TV). Re-installing the Anthem firmware is problematic as I have 2.11 with my unit but there is only 2.10 available on the site. I sent an official request to Anthem to provide me with the test beta to test on my unit but I am not sure if I will get it and when. But I want to try better cables first although I don't understand how a 3 feet Monoprice high speed cable can be bad (when I was testing Anthem together with OPPO but with no TV, although Oppo's cable did not work even in this combination, without TV, but works well with other equipment). Funny thing, when I had OPPO connected to Anthem and TV disconnected, I was getting 1080p on the screen. Connecting the TV cable instantly changed 1080p to MAIN (and no video/audio), disconnecting the TV restored the link between OPPO and Anthem. It is like there was something wrong with the whole HDMI handshaking sequence between three of my components but I could not find a solution on how to fix it (re-sending the HDMI handshake request from OPPO would probably help but nothing I tried worked)
Let Anthem know you need V2.11. Anthem tech support can get you access to their password protected download page. The download which includes the V2.12x "test" firmware also includes V2.11 for use with units that already have that installed.
I use the Oppo provided cables all the time. I also use cables from Blue Jeans Cable (an AVS Forum sponsor). Of course any cable can have a defect. Have you checked all plugs and sockets for signs of pin damage yet?
The HDMI handshake involves ALL connected devices. If any connection is marginal it can screw up HDMI even over paths not using that connection.
By the way, you could also give Oppo a call and they too can give you assistance diagnosing this.
ETA: Another test to try is to do delayed power up in reverse order of the HDMI connections. That is, power up the display. Wait. Then power up the Anthem. Wait. Then power up the Oppo.
If that works then that suggests the problem is that your display is not handling its HDMI properly during power up. This is not uncommon. Once the display gets confused, it tends to remain confused.