Re: Dell PS-5251-2DF2 missing -12V line

hello! Good afternoon. Thank you for allowing me to enter this wonderful forum. Can some body tell me the part number of IC which control the stand by transformer in a dell ps-5251-2ds atx power supply, please? I need to repair it, but this IC is complete damaged, I can not see the reference part number about it in order to by it. Thanks a lot.