there should be a number on the fly itself. for example RTNF1601CEZZ. "RTN " may or may not be present, &/or differ.
FBT is an abreviation for flyback transformer . IHVT is another name ( Integrated High Voltage Transformer)
T402 is the transformer reference number from the parts list.
the part can also be researched via model number .. which is ..........

qrz