ack

You can use this for measurements and edge connector https://github.com/jwestfall69/neogeo-diag-mvs-prog

The tracks were broken until the z80, problem solved.

Im gonna need a bigger boat

The one on the left is the audio DAC, and the one on the right in the audio amp, so I think you're on the right track. If the problem...

Shell arrived, and I finally figured out that by "screen" they meant "screw". So one bottom piece is just press fit, the other you can...

I ended up checking a bunch of traces on the other bad board tonight after finding some more documentation I could understand. However...

I had a problem with my Neo Geo that was very similar to OP, and this thread helped me troubleshoot and fix it. So I wanted to document...

Besides the sound, the board has a small graphical issue. You can see it here as vertical lines in the SNK logos on boot up, on the...

Some progress... Had already removed one cap before I remembered to take a before pic. Depopulated showing the white stuff hiding...

did you try what was suggested?

You have a mismatch between your MV1F and your supergun for audio. You have the MV1F is set to stereo while your supergun is jumpered...

Is your wiring harness jamma or mvs? In your 3rd picture you have the switch set to stereo which might be causing your problem if you...

The advice I gave was based on the messages the update diag rom generates, which can be found here...

Finally got around to actually fixing this. It's been busy for a bit, but feels nice to actually find out what was wrong. This fault...

I have a hard time believing you have continuity on those traces, that first one nearest the battery appears completely gone. What...