hoary heath
Hello! I was wondering if I replaced the ROM chip in a Japanese copy of Pokémon yellow with a US version, would it work? Basically I have a terrible board with good chips on it and trace repair would take way too long and too much effort. It would be way easier if I could just depopulate the US Pokémon Yellow board and implant the chips on the Japanese copy
faint dust
JPN yellow has a different MBC memory mapper compared to the US
you would ROM swap this with another DMG-A02-01 board
but you could probably try to swap it with any MBC5+1024ROM+32RAM
hoary heath
Do you have any examples of games that use this board?
Or are there any resources where I could find that info
faint dust
hoary heath
Thanks!
hoary heath
Pokémon yellow repair
gaunt dune
You don't think a ROM swap to a MBC3 would be fine?
hoary heath
You don't think a ROM swap to a MBC3 would be fine?
I’m willing to try anything, but i don’t own any carts with that board
Not that I’m willing to modify that is
I’m going to go full in and just trace repair this thing
That’s more fun than dropping $20 on different game to destroy anyway
Not a profitable repair unless I do the work myself
gaunt dune
That’s more fun than dropping $20 on different game to destroy anyway
More like $8
hoary heath
I’ll have to check out a list of games with that mobo and we’ll see
Tbh even if I do end up fixing this cart as is, if I were to resell it I probably wouldn’t feel comfortable selling such a dirty corroded cart lol
There’s a nonzero chance the corrosion will continue to slowly spread even if I fix ever trace in the board
gaunt dune
That cart is long gone because of the corrosion, mainly the fingers that make contact with the console
you can't bring those back
hoary heath
You can’t bring them back but you can create new ones
It’s work not worth doing for most people but for me it’s just a fun silly project
faint dust
but you could probably try to swap it with any MBC5+1024ROM+32RAM
just try looking for a board with this
gaunt dune
Make sure the board originally had 256k SRAM
64k boards are no bueno with a sram swap
faint dust
step 1: look for a game with those specs
step 2: confirm with some PCB pics
step 3: try the ROM swap
gaunt dune
I don't see why the rom swap wouldn't work on a JP yellow
hoary heath
I asked the same thing at the start of the thread but was told it wouldn’t work
faint dust
rough search
https://www.mercari.com/us/item/m20758900102/
gaunt dune
Yellow is only a 1MB game, MBC3 can access up to 2MB
Some yellow JP's were MBC5 anyway
faint dust
hoary heath
I will probably continue with the difficult version of the repair and also buy a game to ROM swap at the same time
That way I get to practice on the board before the game arrives
gaunt dune
slightly better price here and he has offers enabled https://www.ebay.com/itm/184529984219
hoary heath
I wasn’t aware this could be done with GBC exclusives
faint dust
yes search the resources. youre just looking for a replacement board
gaunt dune
Side note, make sure you pull the battery before you hot air the chip off/on
hoary heath
I’ve depopulated the whole board already
Except for the caps/resistors
Battery was the first thing I removed
gaunt dune
rom swap is stupid easy, especially on the 32 pin variants
gaunt dune
I asked the same thing at the start of the thread but was told it wouldn’t work
He just said it's a different memory mapper, that's not a hard no. I can't speak from experience unfortunately
the Nsync one would be the safe bet, especially for $9
hoary heath
He just said it's a different memory mapper, that's not a hard no. I can't spea...
Ahh I see
Yeah I found one for $7
gaunt dune
Gen 1 pokemon games varied between MBC3 and MBC5, even ones that didn't need RTC. That's why I figured a yellow swap to a MBC3 would likely be fine
hoary heath
I bought it so I’ll post again here in a few days
hoary heath
Lmao
gaunt dune
nice, now replace that battery
flat folio