TTL RGB ==> PC

For monochrome composite video, or separate RGB (wheter TTL or analogue), then yes, all you should beed to do is tweak the monitor. The horizontal frequencies are close enough that it will proabably sync anyway, if not, then a touch on the horizontal frequncy control (maybe an inductor) will do it. The vertical hold control will probably need re-adjusting, but that's all. Of course if the units output PAL colour composite video it's a bit harder. Feeding that into an NTSC monitor (even after the above tweaks) will get you monochrom output. I've seen NTSC-PAL converters (simple colour system converters, they don't change the scan rates), I assume the reverse exist too. Maybe that would do the trick. If you have the origianl PAL monitors, it should be easy to get them to work on different mains voltages. AFAIK no small monitor cares about mains freqeuncy, the vertical deflection is not locked to the mains or anything like that. -tony