

Wikipedia only mentions analog/digital terrestrial, IPTV and cable as of 2020. They cite a 2013 article with this info: “Imported TV sets that are able to operate on both PAL and NTSC, such as those from Japan, have their NTSC abilities disabled by the government on import.” I can’t imagine how they do it on flat screens (it was not really feasible to import a new CRT in 2013+) because LCDs/OLEDs do all scaling in a single chip. Presumably, they could shut down the system if they detect 59.94 Hz with an added circuit but that’s easy to find and remove.
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