Try connecting it with the composite cable in the AV input. It could be that the resolution or output signal from the HT-BD1200 is set to 480. Changing that resolution, and then connecting the HDMI input may help resolve this issue.
Keep me posted.
With all new equipment, and only the subject components connected, I get sound but no picture. Of course I'd get sound... no TV involved - HT has the BD internalized. Repeated calls to Samsung Support was futile. They have a boiler plate troubleshooting template, and that is all they can do, and do again, and again. I was able to get a little farther with a Vizio tech person, who suggested using the AV connection, to check the HT-BD1200 set up. That worked and even after disabling AnyNet, I still get sound but no picture through the HDMI. I tried all 4 HDMI inputs on the Vizio. The cable is 1080P v1.3. When first booted, I get an attempt at an image, then "Retrieving data..", then a blank screen. It is like there is a compatibility issue between the two units. I am thinking of trying a new cable [another new one, but different brand]. What else can I try?