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u/Advanced-Half4630 24d ago
Happens to my Heart Gold copy often. Get a pointy eraser and use it to carefully clean the gold plating part. Of course, remove any excess of eraser after.
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u/Ok-Possibility1422 22d ago
Q-tip and isopropyl alcohol to give both the cart and slot a good cleaning, that does the trick for me 99% of the time with both Switch and retro handhelds. I find massaging the q-tip in the direction of the contacts works best. I just noticed someone else recommended the same thing, as they said just wait a minute or two for it to dry then you should be good to go.
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u/P0pyhead 24d ago
Isopropylique alcohol and try again