I had indeed upgraded the video module to the VM130 because I got it for $200 (half price), and also added the BlueOS "kit" to it because my dealer was good to me. I don't actually need that BlueOS kit because I've got a Bluesound Vault 2 for my music library and Tidal Hi-Fi streaming.
That did however come in handy for diagnosing the failure. The fact that it only outputs via digital and depends upon the AM100 audio module to do the DAC work means that when I got sound out of the Vault 2 using its analog output but nothing from the BlueOS kit and nothing from BluRay movies via HDMI and no error messages on the T758 display, I knew what actually has failed.
So yes, I'm still on the original AM100 and my dealer has a working one that is leftover from an upgrade they did. I'm also working with an NAD technician to see if there's any other options. While it might be time to go to the AM230, I don't have $629 kicking around for that. I still have the basic Audyssey MultEQ that came with the T758, it works. Nothing to write home about but better than nothing. I run it and them "adjust to taste."
I'll update here with whatever solution happens. I need this to work past my son's wedding in October. After that, all bets are off and Anthem might get a new customer.
My receiver (all T758's) have the AM100NZ from the factory, so my post above is corrected. After further testing it was clear my OE AM100 board was toast. My extra super duper dealer had an AM100 (non NZ designation) from a T765 they'd upgraded, and sold it to me for $50. The price of a new AM100? $400!! That's insane considering a non-existent (yet) AM230 is $629 and would have more features. It took about 20-25 minutes to swap them out and run the latest firmware updates. It works perfect!
Big thanks to my dealer for bailing me out. They'll have my business whether the next receiver is an Anthem or Sony ES.
KEF R500, R200C, R100, SVS SB2000 sub, NAD T758 receiver, Pro-Ject RPM1 TT w/ Ortofon 2M Red, Bluesound Vault2, Sony BDP-S480 BlueRay player, Samsung UN55JU6500F 4K LED TV, KEF M500 headphones, Sony CDP-CE500 CD changer.
Last edited by KenM10759; 05-18-2017 at 07:16 AM.