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Where can I buy resistors and capacitors for Nintendo 64 game cartridges? I have a copy of Super Smash Bros 64 that works but won’t save any progress. I replaced the battery already but that didn’t fix it. The resistors are corroded and I can’t find any place that sells them.

Mouser or DigiKey probably sell most anything you’ll need. https://www.mouser.com https://www.digikey.com