The daughter board looks salvageable, but id like a second opinion. I got all the roms out that i think i need to transfer to a new board, which i also need some info on how to do. Can i use any board or does it have to be a japan board like this one? Thanks in advance!
- Thread starter Protokami
- Start date
That board is only salvageable if you can handle extreme trace and custom chip repair
https://www.arcade-projects.com/threads/extreme-cps2-battery-damage-repair-round-3.16823/
The roms should be fine but honestly you’d probably be fine just buying a new set with working roms. If you want to convert: https://www.arcade-projects.com/threads/the-definitive-guide-to-cps2-conversions.10778/ has info about setting the jumpers. If you wanted to reuse the original roms you would have to also reinstall the encryption keys or cut out the battery(!) and use an infinikey.
https://www.arcade-projects.com/threads/extreme-cps2-battery-damage-repair-round-3.16823/
The roms should be fine but honestly you’d probably be fine just buying a new set with working roms. If you want to convert: https://www.arcade-projects.com/threads/the-definitive-guide-to-cps2-conversions.10778/ has info about setting the jumpers. If you wanted to reuse the original roms you would have to also reinstall the encryption keys or cut out the battery(!) and use an infinikey.
Ooooh boy that one is a sweetheart.
Looks like Street Fighter Zero 2 (JPN) which is a cool fun game, well worth the effort.
The B board is pretty much a gonner, I’ve done a lot of repairs on CPS2 and that is way beyond my ability
Good news is that the game can live on ! You can use those chips on pretty much any B board, just need to set the jumpers correctly, use a matching GAL, and write the keys (infinikey is my favorite)
Should be a fun project!
Edit. Per the link ekorz posted, CPS2 has been fully reverse engineered so if you have infinite patience… https://gitlab.com/loic.petit/cps2-reverse
Looks like Street Fighter Zero 2 (JPN) which is a cool fun game, well worth the effort.
The B board is pretty much a gonner, I’ve done a lot of repairs on CPS2 and that is way beyond my ability
Good news is that the game can live on ! You can use those chips on pretty much any B board, just need to set the jumpers correctly, use a matching GAL, and write the keys (infinikey is my favorite)
Should be a fun project!
Edit. Per the link ekorz posted, CPS2 has been fully reverse engineered so if you have infinite patience… https://gitlab.com/loic.petit/cps2-reverse
The cps2 board itself im not keen on restoring. The daughter board the other roms are attached to would be what id like to keep. From the way this was set up, slots 25-26 arent used, so as long as i clean the corrosion up it should still be usable right?
Im familiar with infinikey! I have some on a couple boards. Ill take a look at the forums and see how to go about setting the chips.
Yes I would clean up the sub board. I’ve never dealt with one so I’m not sure if any traces run through that damaged area. It’s quite possible it’s OK but it’s also possible it’s multi layered and something still needs to be repaired.
I assume the best way to figure that out would be to ohm them from the roms to the pinout that connects them to the mother board?
Update: took a dremel with a wire brush and gently brushed away the corrosion. I used rubbing alcohol and Qtips to clean off what i could. When i started rubbing, parts of the PCB became bare, but crazily enough the contacts still work on the corroded side! I was also able to ohm out most of the roms, but didnt run through each contact. I may just find something to cover up the exposed parts of the pcb just to keep an accident from happening.
Attachments
Luckily a lot of the address lines on those roms run in series, so you can figure out which traces are bad and then just jumper wires from legs of the eproms to the next one in the series. Easier than trace repair, same effect. Doesn't actually look /too/ bad all things considered.
I actually dont need 25-28 on the daughter board if i can find another cps2 board with those ports intact. I just wanted to get that gunk off and keep it from being a bigger problem
