This may well be the final question on this matter, so if there is someone who really is into the tech stuff regarding the Amiga and it`s compatible monitor/s. i would be grateful:
Will a 60 Hertz t.v work with the Amiga 1200?
Assuming that by 60Hz, you mean NTSC, then yes, it normally would, using the A1200's composite output connector. Not as sharp as a real RGB monitor, but good enough for games.
BUT....haven't you got a PAL Amiga that you dragged over from the UK? In that case, I'm not sure, as the composite output might only be in PAL format (50Hz). I know the Amiga can output PAL / NTSC on its RGB port, but I'm not sure if the composite connector is switchable (I don't have an A1200).