NeoGeo MVS 6 Slot Arcade Hardware Repair Part 1.

Thought i'd keep a record of what im doing here and maybe it'll be of some help to someone else who knows.

I have a Neo Geo MVS 6 SLOT (NEO MVH MV6 (6 slot) arcade board to repair

It's had the battery leak but any more than that as of yet i do not know.
The battery is located on the bottom board at the opposite edge from the volume sliders and headphone/ speaker jacks.

It's Huge! but an impressive beast.
Metal shield for the top, Slot Board and then Main board on the bottom.

My first attempt at repair of NeoGeo hardware, so this could go horribly wrong. but hey, i like to jump in at the deep end.

First off, i Stripped it down. some stubborn screws and a bent mount from shipping aside(see pic below for how mount was bent.)

Yes that's a blurry pic, but you can see the board mounts sticking out of the box! lol..

Anyway. i Cleaned the board up, Removed the leaky battery, went over the damaged / leaked acidy area with some baking soda and water solution then cleaned it off with water and dried board throughly.

here's what it looks like now.

Fig 1. Back of bottom board below battery

Fig 2. Top of Bottom Board, Acid Damaged Area

What I need to do is remove the stubborn black sticky foamy gunk so I can take a better look at the traces on the bottom below the battery area. I can see some are damaged.

on the top part, there's plenty of traces which look completely wrote off or very questionable. so alot of work to patch them up.

I may also remove some of the chips in that area and make sure there's no corrosion and they're OK underneath.

The battery was simple to remove just De-solder two pins from the bottom of the board(middle-right of "Fig 1" pic)

That's all so far as i need to stock up on some supplies

Solder, Wire, Flux, etc.

Thoughts So Far?

Big Job! Big Board!  But all being well, achievable i really hope i can bring this board back to life. first of many? prehaps i would like to work on some smaller boards eg 1 2 and 4 slot or dedicated(no slot game built in), and other arcade hardware.