Originally Posted by Wolfie
It's not. This cable is running straight from the Sony to the Panny.
Suggestion is to isolate the problem to a particular component. When the problem goes away through substitution, but returns when the original component is reinserted, you found the problem.
Components: cable, player, TV
1) Substitute a different cable, even if temporary such as a shorter cable
2) If 1) doesn't work, try a different player, same or different model, and then if that doesn't work, suspect the the TV, so try a different one.
Often this is not convenient, but then once the problem is found and corrected, it's worth the effort.
Also, when the problem is found, report back here to help others with the solution to the problem.