Hello friend greetings you can repair this microwave as follows. 1 take the transformer to rewind there they will rewind it no matter if it does not have the role of the code since they do it with the turns they are counting them both that of the primary coil as the secondary coil and it is original. The other option is to take the sample tramsformer to a workshop where the technician repairs microwaves there, just by seeing it, he will know which one to sell you greetings. Atte Hector from Venezuela