Bought a heat gun today and so far tried it on a Xbox's ram that was fauly, a 60 gig ps3 and 40 gig both with YLOD and followed tutorials for each and each had the same issues as before I used heat gun so I assume I am doing it wrong, in fact the 60 gig ps3 doesnt even get power (though I never tested before taking apart as got from Ebay so getting a refund)
I have a heat gun with a low and high setting, I have it set to low as when I tried high once it popped a capacitor on a old broken xbox I used for testing (that was broken beyond repair) and in each case I ran the heat gun under the board first then held heat gun about at about half hand length.
I kept the heat gun on low over each chip for at least a minute and afterwards I could tell the chips were hot as I could feel the heat on top of them.
So what am I doing wrong? with 3 attempts I would assume at least one might either work or be totally dead.