Hey there, axeff88.
Unfortunately, if the TV doesn't support the exFAT file system, you can't make it read the files from the HDD. Check the TV's specs, to see which are the supported file systems. If it supports NTFS, get the files off of the drive, reformat it with the NTFS file system and transfer the data back to the HDD.
Hope that helps.
Boogieman_WD