Looking for advice on modding a Multi-Mega

[samanosuke]

After widening the slot on my Multi-Mega I'm now looking to modify it to run in 60hz. I've had a butchers inside when I filed down the cartridge slot, and despite hearing horror stories over how difficult it is to mod it didn't look scary at all. I used to repair DLP projectors in a previous job, and I've modded modern consoles before so this looks well within my capability.

I have a couple of butt-ugly toggle switches lying around but I really don't want to ruin the aesthetics of my console. One option I've been thinking of is a three-way slider, switching between English 50hz, English 60hz and Japanese 60hz. I'm guessing that a double pole, double tracked jobbie should do the trick. The option I'm liking the best, though, is having just a small locking push-button switch poking through the hole on the back of the unit. Okay, so it'll be simply a 50hz/60hz switch meaning that some Japanese games won't work, but I'm not looking to collect a complete Jp collection. Hopefully I'll be able to get the US/PAL versions of any Jp games which won't work. Speaking of which, are there any essential and exclusive Jp games that won't work on an English machine?

[samanosuke]

Hmmm... I've just been taking a gander at a guide here:

http://www.multimods.com/CDXFAQ.html

...and it says something about using one switch to control both frequency and language. Can games be switched between 50hz and 60hz during operation?

[samanosuke]

Bollocks... the only locking push switches I can find are on/off switches. I take it that switches need to be double tracked for a 60Hz mod?

[teenagewasteland]

chaoticjelly will inevitably know - I'd wait to see what he says!

[samanosuke]

I've just broken the 50hz jumper and soldered across the 60hz jumper for a temporary fix until I can find a suitable solution. Bare Knuckle 2 no longer works (strange that it worked in 50hz/English mode but not 60hz/English mode). Oh well, Final Fight is looking lovely so that'll have to do instead. All Jp FMV games I've played so far have worked fine although I did try Cobra Command (PAL) and that worked fine too! The only thing is I have to use the Mega Cart bios as the Mega-CD won't normally boot up with the machine in 60hz mode but it'll do for now.

[chaoticjelly]

Hey.

I think this is a better solution:

http://www.obsolete-tears.com/switcher-un-sega-multimega-dossier-85.html

It's in French, but is pretty easy to understand if you translate it using google language tools. Uses an ON-(OFF)-ON switch.

[samanosuke]

That's a bloody ugly solution! Well I haven't had any luck finding a suitable latching push-button so I'll go with a slider, probably on the back of the case if I can find the room.

Chaoticjelly, what happens when there are no jumpers connected?