Hi Chris,
We actually tested the EVAL-ADV7619-7511 board today in our pre-compliance certification lab in Japan and it passed. I will send you an email shortly on regarding ordering this.
For your application, is the HDMI input coming from an HDMI cable or from another IC across a PCB? You said earlier you were doing the write to 5A last, could you forward the exact sequence you are using. I think the writes to 0x9C should be done last.
The next time you go to the lab, could you record if the REGEN or VERT interrupts (IO map, 0x6B) or the TMDS PLL lock interrupt (IO map, 0x6A) are being triggered when the issues occurs. could you also record the setting in registers 0xD2 and register 0x60 in the HDMI map when the issue occurs? Are you using Port A or both ports?
Regards,
Paul