Here in the US, Korg has always replaced any defective keyboard I have recently sold with no questions asked. If I, the dealer,chooses to have it fixed, that is my choice. Korg has always been outstanding at getting replacements out to us by priority overnight or second day delivery if we don't have another in stock. Yamaha, Roland, Ketron and Generalmusic have been equally responsive in similar fashion.
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George Kaye
Kaye's Music Scene
Reseda, California
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George Kaye
Kaye's Music Scene (Closed after 51 years)
West Hills, California
(Retired 2021)