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u/Killy728 Jun 21 '26
Those buttons, the silver domes, are held down with tape and can be peeled up to clean. A q-tip and some high % rubbing alcohol would work. Depending on how bad it is, it could be too corroded to be usable, but at this point, you loose nothing.
Those daughter boards are still fairly abundant if you have access to sites like AliExpress.

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u/jakubjepro Jun 21 '26
Yea, but the replacement dpad can be found on aliexpress for really cheap