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Showing results for tags 'loud vibrating sound on 2 key'.
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My Celviano AP-650 is almost 3 years old and now the E and F keys below middle C make a very loud vibrating sound when held down. (like a helicopter). I've tried setting the backup to ON but it does no good. Any suggestions would be greatly appreciated as I play my piano every day and this is just painful. I live in Western Washington.