If you have a GP-P850GM or GP-P750GM PSU, according to the appendix at the bottom of Gigabyte's statement, they're allowing returns and exchanges for serial numbers SN20343G031011 to SN20513G022635 for the P850GM, and serial numbers SN20243G001301 to SN20453G025430 for the P750GM.
https://www.techspot.com/news/90816-gigabyte-releases-statement-failing-power-supplies-models.html?utm_source=dlvr.it&utm_medium=blogger
https://www.techspot.com/news/90816-gigabyte-releases-statement-failing-power-supplies-models.html?utm_source=dlvr.it&utm_medium=blogger