mysticD on 04 August 2009
http://support.xbox.com/support/en/us/nxe/hardware/warranty/postservicewarranty/Post-ServiceWarranty.aspx
It's 90 days if you have it repair under warranty + remaining balance of your warranty, if your console is out of warranty and you paid to get it fix you get 1 year + remaining balance of any (RROD / E74 Warranty).
