I have the same tv (55" 3D 7000 series) it seems to happen on all HD formats. It happens on my PS3 and any HD formats on my CBL box. I have yet to see it on the 480 formats from my Set-top box. this seems like a bigger problem than just a few sets. I have also read about similar problems on the 8000 series, is there a fix if so what is it???????