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A drink was spilled onto this keyboard and 2 days later a few of the keys stopped working. This cleaning method will work on about any type of musical keyboard (and computer keyboards as well) that have had beer or any other sugary liquid spilled inside.The disassembly process in this video is specific to the Yamaha PSR-E363, but other models in theYamaha PSR series are likely disassembled and repaired similarly.