Issues with controller after region/60hz mod

[o1s1n]

Hey guys, just wondering if you have any ideas. A friend of mine is just after modding my EU Megadrive mark II.

He used this guide and as far as I know has done this mod many times before - http://www.mmmonkey.co.uk/console/sega/md2switches.htm


Just got it home, booted it up and the language/60hz switches work great.

There is an issue with the player 1 controller though. On a 6 button Megadrive controller, D pad right and the B button won't work.

However, they will work if I hold them both down at the same time.

All the rest of the buttons work perfectly.

The only other controller I have here for the console is an official three button arcade stick. It goes a bit mental. I can move forward, but the character will keep jumping (As if it's automatically triggering the B button). Sometimes this happens if I duck as well.

He thought maybe the lifted leg on the processor was touching one of the others..I've checked though and it's fine.

[Elusive]

Check the solder points for the P1 controller connector, on a Model 2 they can sometimes come loose if you so much as look at them funnily.

[hardtokill]

Did you come up with a solution o1s1n?

This same thing happened to me, controller port 1 started acting up after modding. I have resoldered connections, checked connectivity, tried jumper wires etc. and came to conclusion that I must have discharged static electricity and broken something permanently.

[TmEE]

Do NOT lift pins when doing region mods... cut a trace and solder on the trace, much less hassle and much safer also.

[o1s1n]

Cheers for the help guys

TmEE - You're right, that's a much better way of doing it. I have a few MD v1s here that I want to try and mod. Will do it that way instead.

As for my own console, it's a weird one. I left it for a week, then put it back together as the guy wanted to give it a look over and see what went wrong.

When I reassembled it, I didn't put the sheilding screws in as tightly as I knew he'd be taking them out again pretty soon.

Thought I might as well give Streets of Rage 2 a go before I sent it back to him, just use the player 2 controller port.

But what do you know, port 1 now works perfectly

So everything is now perfect and I have absolutely no idea how. Could the shielding have maybe been pushing down on the ports?