I'm pretty sure that the refresh rate of the TV itself is always at its highest, what you can switch off is the technology of the TV making up frames that aren't there by combining successive frames - and that is what makes it look like video. If you have a 200hz TV, it will always refresh 200 times per second, the difference is whether the same frame is repeated several times or the TV makes up the frames between those that are actually present in the source - it's an awful thing for movies - when my dad bought an HDTV at my recommendation, he kept complaining to me that films look wrong. I could see it too but at the time I didn't know what it was but in the end I figured out it was the 120hz function and when I switched it off, it looked great.