hi,
I made the mod on a french master system II and it's even easier ... no need to remove pin 57, just find where this pin is connected (follow the track by returning the board).
When you get the point, you can see that this point is located between 2 pins (marked PAL and NTSC ... thanks you mr. sega !) and that it's connected to the left PIN (the one marked PAL) through a simple wire !
Just cut this wire and connect the middle pin to the middle part of the switch and the others 2 parts to each one of the pins described before (the "PAL" and "NTSC" which are in fact +5V and GND) and ... that's it ... no more difficult than cutting a wire
So I think that the best solution if people are looking for a SMS 2 unit is to search on Ebay France (
www.ebay.fr). You will get a "easily modifying" SMS 2 with the quality of RGB output (yes, the french SMS 2 have a RGB output and no RF output)
Hope that all this stuff will help new or future SMS2 owner ...
btw mike, thanks a lot for all the mods informations (genny, sms ...) you made available for us ... since a long time now