Aporte original por: chris ,
Yep thats the only way mate it sounds Like the Main Chip Has some Dodgy Solder Connections Reheating Both the Large Chips Is usually the Best option As in my experience with playstation 3s you can do one and it will turn out to be the other one. If you need a Guide Have a LOok at BGA Reflow PS3 on Youtube there are many a video that started me off fixing them :) and forgod sakes... Dont do the oven trick! i have Bricked Many a Board with that! invest in a cheaper heat gun if need be they do the trick... iv been using the same one for years!! Good Luck!