Hi, 

When I try to watch a 3D blu-ray on the 75" ZD9, there seems to be a syncing problem with the glasses or something. I can see a horizontal black shadow in the middle of the screen jumping up and down. Through the PC output I tried the Nvidia 3D test and that indeed shows that there is an issue.

This goes away if I do a factory rest of the TV and then I can watch 3D properly. But if I try 3D content again a few days later the problem has come back.

It's not an issue with the glasses since all 4 pairs I have (Sony & non-Sony) show the same thing.

Has anyone experienced this problem? Any insight is appreciated.

Thanks!