Sony Dru-120C burner problem

I have a Sony Dru-120c internal burner. IO have had it about 4 months. I have been copying dvds fine up until last night. The burner will recognize the dvd, a software program, or a cd but it has quit recognizing the blank media. when i put in a blank disk the properties revert back to a cd rom drive. I also get a playlist server fail… Is the drive shot or is there something I can do to fix it?