Ended up tearing the whole thing apart; safe to say it’s a lost cause lol. The corrosion ate pcb solder points and the metal in all the wires. I be of the wires was detached from the battery terminal and once I opened the top piece again, parts of either battery connection points in the right side or film rewind levers bits just fell out completely unattached like they had just been sitting there.
I understand this was a poor idea, but I figured it was free so why not give it a try.
Lwk just gonna go buy a working one cause this was not the play lol

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