SOLVED AES button problem

Hi guys, I'm having a problem with my neogeo AES that the button C on the controller port 1 is not registering input. I have tried multiple pads and all of the give the same problem so the controllers problems is out of the equation. I check the solders of the ports and all of them are fine, also check traces and continuity from the port to what it looks like a network array and they where fine. But I don't know where it goes after the array. I thought is was like the mvs that it ends in a chip, and it might be but is certainly not the same as mvs. Any light on it?

Add the photo to the array I trace it the CR4

 

@Kaicer funny seeing you here over from Neo-Geo.

 

what model is your board? I can check the two that I have. Funny to this here from the NG forum

 

Well the funny thing is that I posted on neogeo 3 days ago and got no helpful response. Also I'm not sure what version I have. I'm going to check that and put it here.

Well I got no idea what revision is but is the same as the photo.

 

i think the Revision is underneath the Memory Card reader ( bottom right hand side of board ) , it should say something like 3-3 3-4 3-5 for example. You will need to remove the 2 screws and you should be able to move the reader so you can reveal the Revision on the motherboard

 

you have a first gen board, which are harder to find. As evidenced by the daughter board over the memory card slot.
I have the rev after that which only removes the daughter board as far as I know. Ill scope out the trace and let you know where to look.
From seeing your thread on NG its definitely not a cold joint at the controller port yes?

 

Ok cool thanks this is driving me nuts. Assembler I'm using the original big arcade stick. I also check with an arcade stick I made but it was the same.

 

I traced out the trace you pointed out and it ends up at the cart connector. It goes over and under the board so if you need me to make a map let me know. I don't want to make one if you don't need it aha.

I also wanted to ask what makes you think this trace is related to the c button

 

Well I was looking at this schematic and it says that the that the pin 12 in the controller port that is the C button goes thru that BF11 that I don't know what is that and into the sixth leg on the CR4, then it goes out from the seventh leg but there I got lost. I don't know what could be making the button not working.

Edit: Ok I track the output of the CR4 seventh leg and it end on the leg 74 of the PRO-BO chip.
Edit again: Aparently the problem was that BF11 piece it was making contact to give continuity but not enough to make the button register. I put a good blob of solder with flux so it goes thru and it register now. I hope it stay like that, the piece is like a jumper with ferrite.