Hi,
Well, the fact is that some TVs, like my Sony are NTSC/60Hz compatible but not trough all their outputs, normally only trough one or two, and these one’s use to be one of the RGB 21-PIN outputs (normally all TVs use to have at least two) and the S-VHS output, not the AV output. Check your TV instructions manual. Now a days all the modern TVs use to have all their RGB outputs NTSC/60Hz compatible.
Bye
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