PS Mr.Green pasiūlytą sprendimą dar neišbandžiau. Gūglas siūlo dar tokį 
sprendimą:

Well I've spent so long getting this to work, it'd be a crime not to 
share it round:

I have a Panasonic 54'' Plasma (TH-P54v20A) and I bought a 500Gb WD 
MyPassport external drive with the intention of loading all my Movies 
onto it. However, anyone reading this thread probably already knows that 
USB hard drives do not work with Panasonic TV's like this. However after 
several beers I finally figured it out.

Before starting you'll need a copy of Other Partition tools may do the 
job, but this is free and works quite well.

     Start EASEUS Partition Manager
     Select the USB HDD from the available drives list
     Delete the Partition - MyPassport drives are formatted for NTFS.
     Create a new partition - Be sure to set new partition to FAT32 and 
make it the primary partition.
     Format the new partition - Now here's the trick: set the cluster 
size to 32K. This is important because my Panasonic TV doesn't appear to 
like it when I set the cluster size to 64K
     Finished - Your WD passport drive should now work with your 
panasonic TV



This proceedure has only been tested on a Panasonic TV with a W.D 
MyPassport HDD. - Hope someone else finds this useful.