Sorry for the late reply. GBAtemp really is a site I visit very infrequently, and mostly lurk.im still amazed how broken gen 1-2 is cant think of another game series with so many glitches
And yes "running" is a good word for the status of the blue cartridge theres still something wrong but its playable
for instance if i buy a stack of 99 pokeballs or get over 99 with a item normally it should make another stack of that item but
in this case everything over 99 will be thrown away and then if you exit the marketmenu (after buying something in stack of 99) you would get stuck in front of the market guy and sometimes it let u go 1-2 tiles and then it crashes (while moving 1-2 tiles the map pointer would get corrupted but just my theory at the moment)
i got another question for you since you got more experience with reflowing and gb cards in general
i have a gold edition card in very bad shape (corrosion,black spots maybe data rot and a butchered battery change)
wich wont boot behind the nintendo logo is there any chance to revive? i tried a reflow yesterday with no luck
i looked at the pcb and it looked like some traces where corroded do you have any idea? or is it a case for the rubbish bin?
XD Yeah Gamefreak were never really great programers from what I can tell. Though I think Pokemon's popularity the biggest reason why do many glitches have been found and documented. Nobody is gonna deep dive into 'Revelations: The Demon Slayer' and document everything like Pokemon.
Anyways, depending on how many traces are broken, one could fix it with enough patience and some 30 AWG, or magnet wire.
That would likely be your best bet. depending on how bad it is? Ive repaired a Wario Land 3 that had a fair number of broken traces, and the clear cart shows that off, and I think it looks kinda cool.
Board swap is kinda outa the question sadly.
For starters I have a feeling you wouldn't have the equipment, nor experience.
As far as I am aware, there are no good games to use as a donor board for Pokemon G/S. - Pokemon G/S/C has a very unique board with only one other game ("Trade & Battle Card Hero") being an MBC3 + RTC + 44 pin ROM game.
And because GB/GBC game PCBs come in a lot of variety of configs, there haven't been a lot of people making custom replacement PCBs.
I wouldn't throw it out if you can't fix it (I'm sure someone is always looking to salvage parts from OG carts - Specially shells)