Took down my camera after severe connectivity issues, constantly saying ready to connect. I opened up the SD card slot to find water pouring out and the pins corroded. I'll try cleaning
Five SD Card Cleaners to Clean SD Card or Memory Card
Halloa HN4320 SD Memory Card Slot Cleaner
Free STL file SD Card slot cleaner・3D printable model to download・Cults
Free STL file SD Card slot cleaner・3D printable model to download・Cults
Halloa Memory Card Slot Cleaning Kit for MS / MS Duo HN-4302 | eBay
Amazon.com: Memory Card Case - Fits up to 22x SD, SDHC, Micro SD, Mini SD and 4X CF - Holder with 22 Slots - Microfiber Cleaning Cloth Included : Electronics