Neo Geo Mvs 1 Slot Manual

Hi guys, I just picked up an MVSU4, my first neo cab. I'm not sure if I'm just an idiot or if there is a problem with my board. I fixed a sound issue, but the game select button does not work. I don't have a credit button so I play games on freeplay. If I boot up the game in freeplay mode, is the game select button disabled? I thought you could just turn the machine on, and press select game while it is in attract mode, correct?Title: Neo Geo MV1FZ Manual Subject: Technical Manual Keywords: www.arcadiabay.de. Neo Geo MVS MV4 Bottom PCB Cap Map (courtesy RetroHacks) Purchase these parts as a kit Value Quantity 1000uF 16v 2 100uF 16v 5 10uF 16v 1 1uF 50v 3 220uF 16v 3 22uF 16v 4 4.7uF 25v 14 470uF 16v 6 47uF 16v 1.
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- NeoGeo-1-Slot-Service-Manual-MV-1 16 Pages, 1.2 MB File. Service Manual 20 Pages, 1.6 MB File. Neo Geo MVS Review Arcade 4 Slot Video Tour - NEO MR. DO, METAL SLUG 3, BUST A M: See Recent Video Links Added to Other Records. Additional References (logged in members often see more).
Neo Geo Mvs 1 Slot Manual Download
edit: Also on the bottom board there is are pins for different harnesses labelled 1P, 2P and EL. I only have a harness that fits 1p or 2p so I have it plugged into 1p, but what are they?
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Neo Geo Mvs Vs Aes

I used to run a 1 Slot in my Jamma cabinet. That was Jamma with 2 speakers, wired for what I believe is Mono.
I recently got a 4 Slot PCB, which I understand is not Jamma.
I was going to create an adapter (modify a jamma harness) to run the 4 Slot PCB in the Jamma Cabinet.
Changes:
Female edge connector side
-Move 'Audio Ground' wire from Pin M -> Pin 27
-Move 'Test Switch' wire from Pin 15 -> Pin M
-Add wires at Pin d & 27 for the Select Down/Up Button
So it seems these are the only changes to the Jamma harness I need to make?
As for the speakers themselves. I'm confused about the stereo stuff. I seems I need to rewire my 2 speakers for stereo use.
Once I do that, will I be able to play Jamma PCBs on a Jamma Harness in that cabinet? I would use a jamma switcher, Neo Geo Harness on one of the switcher slots & a Jamma Harness on another another switcher slot. I am worried about some unwanted grounding loops frying the Jamma PCB.
I imagine I will need an Jamma PCB -> MVS Harness adapter once I rewire the speakers for stereo?
Anyone try this Stereo <-> Mono speaker switcher setup?
http://www.pinballzone.com/forums/mvsjammaswitchbo6.jpg
References:
http://forum.arcadecontrols.com/index.php?topic=69692.0
https://forums.arcade-museum.com/showthread.php?t=276443
http://www.pinballzone.com/forums/mvsjammaswitchbo6.jpg
http://www.neo-geo.com/forums/showthread.php?108327-MVS-to-Jamma-speaker-wiring-advice
I recently got a 4 Slot PCB, which I understand is not Jamma.
I was going to create an adapter (modify a jamma harness) to run the 4 Slot PCB in the Jamma Cabinet.
Changes:
Female edge connector side
-Move 'Audio Ground' wire from Pin M -> Pin 27
-Move 'Test Switch' wire from Pin 15 -> Pin M
-Add wires at Pin d & 27 for the Select Down/Up Button
So it seems these are the only changes to the Jamma harness I need to make?
As for the speakers themselves. I'm confused about the stereo stuff. I seems I need to rewire my 2 speakers for stereo use.
Once I do that, will I be able to play Jamma PCBs on a Jamma Harness in that cabinet? I would use a jamma switcher, Neo Geo Harness on one of the switcher slots & a Jamma Harness on another another switcher slot. I am worried about some unwanted grounding loops frying the Jamma PCB.
I imagine I will need an Jamma PCB -> MVS Harness adapter once I rewire the speakers for stereo?
Anyone try this Stereo <-> Mono speaker switcher setup?
http://www.pinballzone.com/forums/mvsjammaswitchbo6.jpg
References:
http://forum.arcadecontrols.com/index.php?topic=69692.0
https://forums.arcade-museum.com/showthread.php?t=276443
http://www.pinballzone.com/forums/mvsjammaswitchbo6.jpg
http://www.neo-geo.com/forums/showthread.php?108327-MVS-to-Jamma-speaker-wiring-advice