My son has ruined yet another one of my/ his game discs. At 60 a pop this is getting expensive. I have decided to make back-up of my discs to prevent this from happening again. I have read forums/tutorials/videos for a cpl weeks and cant decide between just replacing the entire PCB board, or just using the probe to unlock my DG16D4s drive. Not to many videos or comparisons out there on the probe. Curious as to what people who have done this for awhile think.