An extra Y would not be detectable, since the two Y's would be identical. The chips just detect the presence or absence of some allele, not the number of copies.?
An extra X might be detectable, depending on how it happened. If one X came from the mother and the other from the father, then some SNPs would be heterozygous. The tips of the Y chromosome do include SNPs that are also on the X chromosome, so ignore those.
