I've got a fat xbox 2009 jasper which got rrod (3 rings). I have attempted to fix it but first time the power buttons never work and when turned on from controller it still flashes 3 rings. I did the same process all over again (reflow using a heat gun and changed the thermal paste) and the same problem. Thinking of doing it one more time but first I want ur suggestions. I'm thinking of doing the reflow in the oven this time. Any suggestions pls comment. What should I do?