Also tried a different hard drive with the standard USB connection which worked fine.
Please clarify...did that drive work FINE on your TV set and the other one did not?
I know the Hard drive works fine on the OTHER TVs, but your Panasonic 3D (which you never gave us the Model number of ) -- One drive does Not Work....and another one Does Work?
The one that works....is it OLDER than the drive that won't function?
I think I have an idea ....but I need that information.
What do you want, to find my answer acceptable?