I have tried my Amiga with composite and s-video (the Amigamaniac) adapter and all my US TVs, tubes and LCD....
None of the combinations work with PAL...
I did get an s-video to VGA adapter and with that (and the Amigamaniac adapter (he's just starting a new run by the way), I can display NTSC and PAL on my computer monitor.
I bought the wrong cheap svideo-VGA adapter tho. It has a glitch and some of the colors are lower than they should be. But other adapters in the same price range ($30) are working for people.
Of course, that's $30 for the Amiga s-video adapter and another $30 for the s-video to VGA adapter. So it's getting up there price wise..
But it also does composite to VGA so I use it for my other systems.
Interesting, composite - VGA on my cheapo adapter doesn't drop colors. So I have been using that for gaming and deciding if I will spend ANOTHER $30 on the better adapter or do something different..
desiv