Neo Geo MV-1 connection info needed

mjs256

Kula's Candy
10 Year Member
Joined
Apr 1, 2010
Posts
294
Hey everyone,
I am trying to repair a Neo Geo MV-1 motherboard with chemical damage due to battery leakage. Unfortunately the damage has spread to underneath the ICs and particularly under the NEO-D0 chip. There is one trace that seems to be broken under NEO-D0 and I need to know where it goes. It is the trace that goes out through the gap between pins 32 and 33 of the NEO-D0. I will try to include a picture with the trace circled in red. The other end of this trace goes to the PRO-C0 pin 55. Does anyone have an MV-1 and a continuity checker who can tell me which pin on the NEO-D0 this trace goes to? I really don’t want to remove the whole chip just to find out if I can avoid it. Thanks so much!IMG_1817.jpeg
 

BIG BEAR

SHOCKbox Developer,
20 Year Member
Joined
Dec 14, 2001
Posts
8,290
Hey everyone,
I am trying to repair a Neo Geo MV-1 motherboard with chemical damage due to battery leakage. Unfortunately the damage has spread to underneath the ICs and particularly under the NEO-D0 chip. There is one trace that seems to be broken under NEO-D0 and I need to know where it goes. It is the trace that goes out through the gap between pins 32 and 33 of the NEO-D0. I will try to include a picture with the trace circled in red. The other end of this trace goes to the PRO-C0 pin 55. Does anyone have an MV-1 and a continuity checker who can tell me which pin on the NEO-D0 this trace goes to? I really don’t want to remove the whole chip just to find out if I can avoid it. Thanks so much!View attachment 78399
Pin 28
BB
 

mjs256

Kula's Candy
10 Year Member
Joined
Apr 1, 2010
Posts
294
Big Bear,
Thank you so much! You are correct- that was the right pin and now the board is working better. It still has an issue but is closer to fully functioning. Thanks again.
 
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