MichaelP & dopplerdon -- I get the same thing on my HR20-700. However, there is a fix. It only happens if you have "Native" turned "On" (Menu => . . ., Setup => Setup => HDTV => Video). I turned "Native" to "Off" and it no longer happens. I have my "Resolutions" set to 720p & 1080i only (even though my TV accepts all resolutions). with "Native" turned "On" and the HDMI connection, it will always try to re-negotiate the hand-shaking. By turning the "Native" to "Off", you can force the resolution to what you want it to be, and it won't re-negotiate the settings (and you won't get the program blanking problems).