N.Y. U.C.C. 2-608

Section 2--608. Revocation of Acceptance in Whole or in Part.\n (1) The buyer may revoke his acceptance of a lot or commercial unit\nwhose non-conformity substantially impairs its value to him if he has\naccepted it\n (a) on the reasonable assumption that its non-conformity would be\n cured and it has not been seasonably cured; or\n (b) without discovery of such non-conformity if his acceptance\n was reasonably induced either by the difficulty of discovery\n before acceptance or by the seller's assurances.\n (2) Revocation of acceptance must occur within a reasonable time after\nthe buyer discovers or should have discovered the ground for it and\nbefore any substantial change in condition of the goods which is not\ncaused by their own defects. It is not effective until the buyer\nnotifies the seller of it.\n (3) A buyer who so revokes has the same rights and duties with regard\nto the goods involved as if he had rejected them.\n