Cablevision Intermittent Video Issue via HDMI

[toddr78]

Hey all...my apologies if this is an existing topic (I searched and couldn't find it).

Does anyone know about the ongoing issue with intermittent video via HDMI with multiple cable companies?

My setup is as follows:
Cable Box: SA 8300HD DVR on Cablevision/Optimum iO
AVR: Denon AVR-789

The issue is that intermittently the video/audio goes black for about a second and then comes back. Originally I thought it was the HDMI port on my receiver, and switched it to another input. At first it seemed to fix the problem, but the issue returned.

After searching the web, I've seen numerous posts and comments about this issue dating back to 2005. It seems this issue has never been properly resolved.

Anyone have knowledge or a way to resolve the issue?

Thanks!