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Оригинальный сообщение: Wolphin ,


Some 99%+ Isopropyl alcohol and a cuetip may be able to clean it up without opening it up, but it may be underneath the edge, at which point you may need to open it up to get it cleaned.

Look around for a repair manual for your computer, or videos if you want to try opening it up.  Without knowing your skills, I cannot say if you can/should do it yourself.