Some models are designed to run in both regions, and many are not. I have no way of knowing one way or another. The best I can offer is to call the Samsung customer service center in your region to inquire about your specific model.

There isn't a way to swap electronics to make it work in a different region that I'm aware of, nor is there a process to do so, that I'm aware of. 50Hz and 60hz televisions are designed differently for the NTSC/PAL regions, so it's likely that you wouldn't be able to. But I'd still recommend checking to see if this is different for the TVs sold in your region.