[QUOTE="thecrypticodor"]
[QUOTE="rilpas"] yep. I guess the controller port would have to be replaced/fixed but I have absolutely zero skills for that sort of thinglogicalfrank
No as long as all the pins are there there's nothing wrong with the port. Whats happening is the 4th pin is constantly being grounded where it's soldered onto the board either by the 8th pin or by the RF shielding.
Basically how the controller buttons work is by connecting a specific line with the ground when it's pressed. If the line is constantly grounded it's like your holding the button down.
What you can do is open the console and look where the port is soldered onto the underside of the board and check if any of the points are bridged (connected one to another by a bit of solder) If that's not the problem then it's the aluminum RF shielding inside the case coming into contact 4th pin.
I have never looked into a Genesis specifically (well, I have modded a Nomad) but I would actually guess it's the latter (pin coming into case w/ RF shilding). To fix this, you could probably just put some duct tape or just a little bit of cardboard in between the sheilding and the board. Might actually be able to diagnose this w/o opening the case by plugging a controller in the port and using the plug to pull the port/board up away from the sheilding and if it stops running to the right. Same sort of thing happens w/ headphone jacks and all other kind of ports on all kinds of devices... Gotta be careful though because you can end up hosing up the pins doing this.
Also, to the OP, this isn't something isolated to only one game, right? Have you tried a different game?
TMNT is the only two player game I have, so I haven't been able to test it yet
as for your sugestion, it sounds like something simple, I could probably try that
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