SNES SFC 50/60Hz Switch with Lockout Switch (continued)
Here's an idea of where mmmonkey positions the switches, and how to label them (done using a Dymo LetraTag).
Now you've finished, you can enjoy most SNES games in 60Hz full screen, full speed. Like Super Mario World here.
There are however some games which have graphical glitches, so these will need to played with their intended setting (this is one reason we fit a switch instead of permanently modding). SuperFX games seem to have problems, look at the missing graphics under the word Start in the second picture below.
Another reason for fitting a switch is because some games check for 50 or 60 Hz when you start up your SNES, if they don't find what they expect then you'll receive an error message similar to the following. You can of course start the console up in the expected mode, then switch the desired mode.
There are even a few games that will refuse to load with the lockout chip disabled, a PAL copy of Kirby's Fun Pack refused to load on mmmonkey's PAL SNES unless the chip is enabled. So simply disabling the chip is not a good idea. Another game that refuses to load is Super Mario RPG, so for maximum compatibility it may be best to have both a PAL console as well as an NTSC console (an American might be good for its wide cart slot) UPDATE - check this.
Depending on your exact console model, the layout of the board might be different to the photographs in this guide. AND... there are some later motherboard revisions that can't be modified with a 50/60Hz switch, mmmonkey doesn't know how to tell which ones, but if you open it up and PPU1 + 2 have been combined onto one chip then it can't be done. This is also the case with the smaller "Jnr" models of the SNES/Super Famicom. UPDATE - check this out.
Performing this on an American SNES and removing the cartridge tabs as described here can produce the most universal SNES console.
Credit must go to Mark K, mmmonkey first saw the information for this on his very interesting website. Make sure you visit to read more technical information about this and other mods.
Summary of Components needed
2 x Single Pole - Double Throw
switches
1 x 2.2K ohm Resistor
Wire (Kynar preferred)
