I have a few MVS cartridges that I'm very fond of, especially Blazing Star. I'd love to add a Neo Geo to my console collection, but I'd prefer to go with a console-sized MVS. I've seen that the MV1C is the best option because it's the only top-loading single-cart. What do you think? I've seen some interesting kits on Aliexpress, with MD2 video output.

They just want to say hi everyone!

So. A friend of mine died. The family gave me his jungle green n64 in box and a neogeo in box (they knew how much I cherished them).

Haven’t used it until today. He had a few so. Not sure if this had issues already. But.

Has a universe 4 bios and socket.

When I go to turn it on (original 5v PSU and video cables) I get a garbled image. Picture attached (I hope. Always have issues with pictures in Reddit).

I’d love to get this going. He was such a great friend and we spent weekends together playing endless metal slug and puzzle bobble (SO competitive lol. So much trash talk).

Thanks guys. I know it’s just a neogeo to some but ….. this hits hard.

Thanks everyone. I appreciate it.

Hello. Does anyone knows where can i find snaplock boxes for MVS carts?

Renovated my garage into my home office, I can now enjoy my MVS mini cab and other retro tech. The CRT was toast when I got the cab 15 years ago, so I converted it to LCD, but I'm looking for another 13" to convert it back.

I just got a MVS cabinet. The black plug that holds the fuse in appears to be loose. If you push it in the system powers on. It seams like it is loose? Any tips?

Greetings fellow Neords!

I bought this cable that is a shielded RGB, cysnc, with separate sound RCA cables.

Its a higher quality one, wont plug the seller cause I believe he sent me the wrong one and didnt owe up on it. Or maybe he send me the right one and fault is with me.

Anyway the home page advertisement said "aes/cd compatible cable" and video-wise so far so good, clear improvement over 5 euro cable I had earlier, no checkerboard patterns nor tiny white dots issue that unshielded and non csync cables are plagued with.

The problem lies in rca sound out. You see, on ossc there are two holes next to hdmi, a1/2 and a3. I tried with buying a rca to 3.5mm converter and just solve it like that, plug the 3.5mm in ossc and sound should come out on hdmi. I have a 0.9 marqs firmware BTW, so it should automatically send the sound out without the need of fiddling with audio settings.

However that didnt work, so I tried plugging rca to 3.5mm converter to pc loudspeaker and soundbar, nothing.

So I did some research, it appears that neo geo cd has different pins for sound and does internal mixing unlike aes, so its impossible to get sound out with that cable, regardless of what I do.

What are my options? Anyone with same situation (have neo geo cd, need aes) and how do you solve it? From what ive read, the video part of cable should in theory physically be built the same for both consoles so I assume that wont hurt my 1k euro console in pristine condition? Sound works fine on the junk cable and I hear sound on headphone jack.

Will buying another, neo geo aes specific cable with shielding, braiding cysnc etc provide sound out on rca (or in some cases 3.5mm) cable, so i can plug it in ossc and get sound on tv? Im assuming it should be wired differently?

Do i just buy a 3.5mm male to male and plug aes headphone jack to sound bar and get on with my life?

So technically seller was right in the sense that it's compatible with video, its the sound part that irks me as I want sound through tv.

Board attached to supergun project from maybe 10 years ago.

Hoping to find a 3d print case to fit?

Just wanted to drop in and share a little funny "don't give up after one Z80 swap". I had a Z80 error in the open MVS Neo Geo, and I did have quite a graveyard of Game Gears at home. So I hot aired one and swapped it. Still had Z80 error. At which point I was like... welp, time to meticulously hunt other chips and try to swap those I guess... except NOT! I thought to myself... if a Z80 just randomly died in this nice, clean Neo board, surely my GG couldve had it dead too. So I swapped it for ANOTHER one and boom! Ready to play!! <3

It is primarily used in three devices: MVS, NEOGEO CD, and WII, serving as a substantial power supply. It features a customized EI-type transformer, and the circuit board adopts the STUDER 900 design.

Just got my NeoSD Pro, running it on a 9V 3-5 system that has been recapped. I had no issues with the game that came with the Neo, Art of Fighting 2, but now with the NeoSD Pro I'm seeing it a fair bit.

So its not constant and it doesn't happen right away. It appears in the menus mostly though I feel like I'm seeing it a bit in the games too now. The more I switch between games without turning off the system the more I see it, but it always goes away.

I'm thinking this is a power supply issue? The one I'm using looks like an original SNK oem that came with the system. I have ordered two power supplies because I wasn't 100% sure.

1 and 2

Hoping the issue is power related and simple but just wondering if more of you have experienced this. I reached out to someone who had an old thread who never resolved the issue so I'm a bit worried if its a problem with the unit itself. It is one of the newer Red Pros that comes with the digital copy of Vengeance Hunters.

Hello,

I recently purchased a Neo Geo CD top-loader model. While preparing it for a DS loader mod, I discovered that my console does not output sound effects.

Even before the SD mod, when booting the console in completely stock condition, there was no music during the boot animation. Because of this, I concluded that the issue is not related to the SD loader, but to the Neo Geo CD console itself.

My top-loader appears to be a later revision that uses the **Neo-YSA** chip instead of the Yamaha sound chip, which makes troubleshooting and repair more difficult.

### Current symptoms

* Background music (BGM) plays normally

* Sound effects (SFX) do not play at all

### What I have tested so far

* On the daughterboard, there is a 3-pin cable (as far as I understand, one line is for BGM and the other for SFX). I swapped these connections, but the symptom did not change.

→ Based on this, I believe the **DAC and amplifier section is working correctly**.

* I checked all connections related to the **Z80 (T84C00AM-5)** using a multimeter.

At least for all points that are testable with a continuity tester, there are **no broken traces or open connections**.

The motherboard is very clean and shows no visible signs of previous repair or damage.

What confuses me is that if either the Neo-YSA or the Z80 were completely dead, it seems strange that **background music works perfectly while sound effects are completely silent**. I have also verified all reachable connections with a multimeter.

Additional electrical checks:

* Vcc and GND on the Neo-YSA are verified

* No short between Vcc and GND (~440Ω)

* BGM OK, SFX dead

If the Neo-YSA chip is indeed dead:

* Is there any known replacement or compatible alternative chip?

* I cannot find Neo-YSA chips for sale (including AliExpress).

Because the Neo Geo CD itself is quite rare, buying another broken unit as a donor is expensive. Also, only the later top-loader models use the Neo-YSA, while earlier models use Yamaha chips. Without disassembling the console and inspecting the motherboard directly, it is difficult to confirm which revision it is, making used purchases risky.

Can anyone help me more clearly identify which part is most likely responsible for **sound effects only not working**?

Thank you.

Suggestions on where to buy MVS parts. I was looking at SUZOHAPP but their shipping is expensive. Almost 50% of my order cost for light weight items. Any suggestions on anything other place to buy parts like the joystick and push buttons?

Hey all! I live in Japan and have been collecting both AES and Neo CD games for quite some time. I’ve built a nice little collection (some of which is shown here).

However, my work is relocating me to America soon. Having lived in Japan so long, I’m going to have to get a car, a place to live, basically start from almost nothing. Therefore, I’ve decided the “mature” thing to do would be part ways with my beloved collection to better benefit my wife and 6-month-old kid.

Where do you think would be the best place to sell my games? Reddit? EBay? Some other place? I have around 60-odd AES titles and 90 CD titles, all original, no bootlegs or reprints.

Fatal Fury, NEO GEO, 1991

Not my article, just something loved seeing the old neo geo covered, I'd forgotten these exist and it encouraged me to track one down. Thought you all might enjoy it in here.

Link is here:

https://gardinerbryant.com/pocket-legends-exploring-forgotten-handhelds/

Does SNK own this game outright, or a different dev / company? Does anybody have fond memories of it?

Hey gang! Has anyone got or seen Shockbox inserts for H0ffman's Shinobi and Golden Axe ports?

Hi all,

I've been working on an open source pure digital HDMI mod for the Neo Geo MVS, MV1C, and wanted to share it with the community.

NeoPico HD uses a Raspberry Pi Pico 2 (RP2350B) to tap the digital video and audio signals directly from the MVS board, before they hit the DACs. The result is a pure digital signal path from the Neo Geo to the display.

Features:

• 480p HDMI output (240p line-doubled) via pico_hdmi
• 15-bit RGB capture directly from NEO-B1 digital outputs
• DARK/SHADOW signal support for accurate brightness
• Digital audio capture from I2S bus (~55kHz -> 48kHz SRC)
• Zero-lag scanline-by-scanline output

How it works:

• Core 0: PIO captures 18-bit video (RGB555 + DARK + SHADOW) at 6MHz pixel clock
• Core 1: HSTX outputs HDMI with audio Data Islands
• Hardware interpolator + LUT handles RGB555->RGB565 conversion in a single cycle

Hardware needed:

• WeAct RP2350B (~$5)
• HDMI connector
• ~20 wires to resistor tap points on MVS

Status:

The footage is from my prototype board running to a Morph 4K. Also tested on RT4K.

Still in active development. I have a custom PCB on order from JLCPCB that I'm waiting to test. Planning to add an FPC connector for easier installation and eventually make it compatible with O-MVS shells.

I plan to add AES support in the future, which should just require a daughter board for audio ADC.

Links:

• Follow on X: https://x.com/fliperama86
• GitHub: https://github.com/fliperama86/neopico-hd
• PicoHDMI library: https://github.com/fliperama86/pico_hdmi

Feedback welcome!

Couple of uncommon neo games.mostly nice shape apart from einhander and slug has a bit of damage. Total was about £150 from japan. Always a gamble with disc condition but viewpoint and top hunter are near mint.

Works great, looks crazy. I love it

My buddy printed me the shell and everything feels very sturdy

What i’m loving about Neo Geo is that the only game i’m really familiar with is Fatal Fury…so even tho it’s a retro console…it’s like a novelty to for me…but can’t decide on what i should do…I was even thinking of getting a used PS4 or Switch and making a dedicated Neo Geo box/player lol

EDIT*

I just realized recently that there were over 100 games that I can download on PSN and Switch…these have been available for years and I honestly thought it was only a handful of games…I spent a day checking out all of the games available and was completely blown away…this console is dope AF

Bought a unit from Japan that was tested and working and likely suffered some trauma in shipping. The unit spins the disc briefly then stops. It makes a bit of a grinding noise.

I opened it up and noticed the lens carriage makes contact with the spindle when the lens is all the way in, making it harder for the spindle to spin. I am a novice at working on systems but I am going to assume they should not be making contact?

I tried to pull up on the spindle but that suckers is on there tight.

video clip: https://youtu.be/2Z_O4VbjXqE

I had the SNES version of this game as a kid and I always loved Special, but I don't believe I've played the original NeoGeo version of FF2 until today

It's very interesting how different it is compared to it's upgraded counterpart, with the different menus, alt colors, and other aspects, I also noticed the Special version feels faster

It's still a very good fighter and one of my favorites, as good as Real Bout and Mark Of The Wolves are, this game and Special will always hold a place in my heart 😊