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Consoles/SNK/Neo Geo CD

SNK — Neo Geo CD

SNK Neo Geo CD: Full Recap, PSU, SD Loader & F-RAM Save Mod

January 17, 20213 threads~2 min readSuccessful repair
Leaking capacitorsBattery-backed save loss
RecapModchip / ODESave battery / FRAM mod

A cheap Neo Geo CD from 2021, recapped board by board: the AV and power board, the optical drive PCB, the mainboard and the original PSU. Later fitted with a NEO SD Loader to take the load off the drive, and an F-RAM save mod after it stopped holding saves even with a fresh battery.

Parts & Tools (2)

SD Loader

Neo Geo CD SD Loader by Furrtek, a drop-in replacement that lets the Neo Geo CD load games from an SD card instead of physical discs. Mine was bought from the PhenomMod store, since I missed the last batch Furrtek ever made.

F-RAM save mod

The backup save RAM sits at RAM1 in the board's marked back up area: a Sony CXK5864CM-10LL, 8192 x 8 in a 28-pin SOP. Swapping it for ferroelectric RAM keeps saves alive without leaning on the battery at all.

Infineon FM16W08-SG is the exact counterpart: 64Kbit parallel FRAM, the same 8192 x 8 organisation in the same 28-pin SOIC footprint, so it goes straight onto the existing pads with no adapter. The FM18W08-SG is the same package at four times the density if you want the headroom.

Note that the DIP-packaged FM1808 often recommended for this mod on other consoles will not fit this board, which is surface mount.

hitmanmcc
hitmanmcc

August 10, 2026· Thread 1· 5 tweets

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Back in 2021 I accidentally stumbled on a cheap Neo Geo CD, having only played Neo Geo on an emulator, I decided to take a plunge, thinking this would likely be my only avenue to real hardware (time would prove me wrong). Naturally I had to recap it and PSU. #retrogaming #neogeo

2 / 5

I started with the AV/Power board. This console has a lot of wires, so I have a lot of pictures of it in my archive, it felt a bit intimidating at the time and I didn't want to screw anything up.

3 / 5

Next, I recapped the optical drive PCB, which would later see a NEO SD Loader take the load off of it. Though it did run a few burned games for a while before that. Fortunately, I got a good working drive.

4 / 5

Afterwards, I recapped the mainboard, no fuss. Further into the future it would get a modification though. For some reason, I started to get issues with being able to keep saves, even after replacing the battery, so I ended up doing an F-RAM mod, my very first one I believe.

5 / 5

To finish everything off, I recapped the original PSU, though I did have an aftermarket one for use in European mains. Naturally, I gave it a quick test with Metal Slug which is one of my favourite games for the system.

hitmanmcc
hitmanmcc

November 1, 2021· Thread 2

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@furrtek's Neo Geo CD SD loader kicking ass! Thanks for designing this and thank you to @PhenomMod for making the kit. This makes the console even more awesome to me. #retrogames #NEOGEO #console

hitmanmcc
hitmanmcc

June 22, 2022· Thread 3

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Neo Geo CD F-RAM upgrade worked a treat. Thanks @Lain32_ for sharing this info. Mine wasn't keeping the battery charged even with a new one. This fixed the issue and actually improved functionality. Great tip! 👍#RETROGAMING #SNK #NeoGeo

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