I recently bought a Hitachi DH 3200 LED TV and it works fine. My main problem is when I want to watch movies and TV shows off my hard drive. I plug it into the USB slot and for the most part, everything works. Sometimes though i'll turn my TV on and it'll tell me the file type of the movie I want to watch isn't supported with the TV. This is bullshit because it's telling me this for movies i've already watched on the same TV. It seems to do this randomly and neither turning off the TV or removing and re-attaching the hard drive seems to fix this problem. They won't work for like 2 days and then suddenly 1 day i'll turn the TV on and it'll decide the files are suddenly fine to play. These files all play fine on the computer.
I doubt it's changing settings because it'll work, then it won't, then it will, then it won't. It's completely random as to when it will or won't work.